AU Base Implementation Guide
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This page is part of the Australian Base IG (v4.2.1-preview: QA Preview) based on FHIR (HL7® FHIR® Standard) R4. The current version which supersedes this version is 4.1.0. For a full list of available versions, see the Directory of published versions

Resource Profile: AUBaseMedicationRequest - Detailed Descriptions

Page standards status: Trial-use Maturity Level: 2

Definitions for the au-medicationrequest resource profile.

Guidance on how to interpret the contents of this table can be found here

0. MedicationRequest
ShortA request for a medication for a patient in an Australian healthcare context
2. MedicationRequest.extension
SlicingThis element introduces a set of slices on MedicationRequest.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 4. MedicationRequest.extension:subsidisedConcurrentSupply
    Slice NamesubsidisedConcurrentSupply
    Control0..1
    TypeExtension(Subsidised Concurrent Supply) (Extension Type: Coding)
    6. MedicationRequest.identifier
    Definition

    Identifiers associated with this medication request that are defined by business processes and/or used to refer to it when a direct URL reference to the resource itself is not appropriate. They are business identifiers assigned to this resource by the performer or other systems and remain constant as the resource is updated and propagates from server to server.

    ShortExternal ids for this request
    NoteThis is a business identifier, not a resource identifier (see discussion)
    TypeIdentifier(Identifier, AU ETP Prescription Identifier, AU Local Prescription Identifier)
    8. MedicationRequest.medication[x]
    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
    SlicingThis element introduces a set of slices on MedicationRequest.medication[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
    • type @ $this
    • 10. MedicationRequest.medication[x]:medicationCodeableConcept
      Slice NamemedicationCodeableConcept
      ShortCoded Prescribed Medication
      Control0..?
      TypeCodeableConcept
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      12. MedicationRequest.medication[x]:medicationCodeableConcept.coding
      14. MedicationRequest.medication[x]:medicationCodeableConcept.coding.extension
      SlicingThis element introduces a set of slices on MedicationRequest.medication[x].coding.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ url
      • 16. MedicationRequest.medication[x]:medicationCodeableConcept.coding.extension:medicationClass
        Slice NamemedicationClass
        Control0..1
        TypeExtension(Medication Type) (Extension Type: Coding)
        18. MedicationRequest.medication[x]:medicationCodeableConcept.text
        Definition

        A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

        This may be a brand or generic name as suitable for the intent of the entry.

        ShortMedication primary text
        20. MedicationRequest.medication[x]:medicationReference
        Slice NamemedicationReference
        ShortPrescribed Medication
        Control0..?
        TypeReference(Medication)
        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
        22. MedicationRequest.supportingInformation
        SlicingThis element introduces a set of slices on MedicationRequest.supportingInformation. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • profile @ resolve()
        • 24. MedicationRequest.supportingInformation:bodyHeight
          Slice NamebodyHeight
          ShortObservation of Body Height
          Control0..1
          TypeReference(Observation Body Height Profile)
          26. MedicationRequest.supportingInformation:bodyWeight
          Slice NamebodyWeight
          ShortObservation of Body Weight
          Control0..1
          TypeReference(Observation Body Weight Profile)
          28. MedicationRequest.authoredOn
          ShortCreated date
          30. MedicationRequest.reasonCode
          BindingThe codes SHOULD be taken from Reason for Request .
          (preferred to https://healthterminologies.gov.au/fhir/ValueSet/reason-for-request-1)
          32. MedicationRequest.dosageInstruction
          TypeDosage(AU Base Dosage)
          34. MedicationRequest.dispenseRequest
          ShortRequested dispensing
          36. MedicationRequest.dispenseRequest.numberOfRepeatsAllowed
          ShortMaximum repeats authorised
          38. MedicationRequest.substitution
          ShortBrand substitution details
          40. MedicationRequest.substitution.allowed[x]
          ShortBrand substitution flag
          [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
          42. MedicationRequest.substitution.reason
          BindingThe codes SHOULD be taken from Medicine Substitution Reason .
          (preferred to https://healthterminologies.gov.au/fhir/ValueSet/medicine-substitution-reason-1)

          Guidance on how to interpret the contents of this table can be found here

          0. MedicationRequest
          Definition

          An order or request for both supply of the medication and the instructions for administration of the medication to a patient. The resource is called "MedicationRequest" rather than "MedicationPrescription" or "MedicationOrder" to generalize the use across inpatient and outpatient settings, including care plans, etc., and to harmonize with workflow patterns.

          ShortA request for a medication for a patient in an Australian healthcare contextOrdering of medication for patient or group
          Control0..*
          Is Modifierfalse
          Summaryfalse
          Alternate NamesPrescription, Order
          Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
          dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
          dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
          dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
          dom-6: A resource should have narrative for robust management (text.`div`.exists())
          2. MedicationRequest.implicitRules
          Definition

          A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

          ShortA set of rules under which this content was created
          Comments

          Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

          Control0..1
          Typeuri
          Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          4. MedicationRequest.extension
          Definition

          An Extension


          May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

          ShortExtensionAdditional content defined by implementations
          Comments

          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

          Control0..*
          TypeExtension
          Is Modifierfalse
          Summaryfalse
          Alternate Namesextensions, user content
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
          SlicingThis element introduces a set of slices on MedicationRequest.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • value @ url
          • 6. MedicationRequest.extension:subsidisedConcurrentSupply
            Slice NamesubsidisedConcurrentSupply
            Definition

            The grounds which authorise a PBS or RPBS subsidy for the concurrent supply of a medication item specified in a prescription and all of its repeats.

            ShortGrounds for concurrent supply of medication
            Control0..1
            This element is affected by the following invariants: ele-1
            TypeExtension(Subsidised Concurrent Supply) (Extension Type: Coding)
            Is Modifierfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            8. MedicationRequest.modifierExtension
            Definition

            May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
            Summaryfalse
            Requirements

            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

            Alternate Namesextensions, user content
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            10. MedicationRequest.identifier
            Definition

            Identifiers associated with this medication request that are defined by business processes and/or used to refer to it when a direct URL reference to the resource itself is not appropriate. They are business identifiers assigned to this resource by the performer or other systems and remain constant as the resource is updated and propagates from server to server.

            ShortExternal ids for this request
            Comments

            This is a business identifier, not a resource identifier.

            NoteThis is a business identifier, not a resource identifier (see discussion)
            Control0..*
            This element is affected by the following invariants: ele-1
            TypeIdentifier(Identifier, AU ETP Prescription Identifier, AU Local Prescription Identifier)
            Is Modifierfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            12. MedicationRequest.status
            Definition

            A code specifying the current state of the order. Generally, this will be active or completed state.

            Shortactive | on-hold | cancelled | completed | entered-in-error | stopped | draft | unknown
            Comments

            This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.

            Control1..1
            BindingThe codes SHALL be taken from medicationrequest Statushttp://hl7.org/fhir/ValueSet/medicationrequest-status|4.0.1
            (required to http://hl7.org/fhir/ValueSet/medicationrequest-status|4.0.1)

            A coded concept specifying the state of the prescribing event. Describes the lifecycle of the prescription.

            Typecode
            Is Modifiertrue because This element is labeled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            14. MedicationRequest.intent
            Definition

            Whether the request is a proposal, plan, or an original order.

            Shortproposal | plan | order | original-order | reflex-order | filler-order | instance-order | option
            Comments

            It is expected that the type of requester will be restricted for different stages of a MedicationRequest. For example, Proposals can be created by a patient, relatedPerson, Practitioner or Device. Plans can be created by Practitioners, Patients, RelatedPersons and Devices. Original orders can be created by a Practitioner only.

            An instance-order is an instantiation of a request or order and may be used to populate Medication Administration Record.

            This element is labeled as a modifier because the intent alters when and how the resource is actually applicable.

            Control1..1
            BindingThe codes SHALL be taken from medicationRequest Intenthttp://hl7.org/fhir/ValueSet/medicationrequest-intent|4.0.1
            (required to http://hl7.org/fhir/ValueSet/medicationrequest-intent|4.0.1)

            The kind of medication order.

            Typecode
            Is Modifiertrue because This element changes the interpretation of all descriptive attributes. For example "the time the request is recommended to occur" vs. "the time the request is authorized to occur" or "who is recommended to perform the request" vs. "who is authorized to perform the request
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            16. MedicationRequest.doNotPerform
            Definition

            If true indicates that the provider is asking for the medication request not to occur.

            ShortTrue if request is prohibiting action
            Comments

            If do not perform is not specified, the request is a positive request e.g. "do perform".

            Control0..1
            Typeboolean
            Is Modifiertrue because This element is labeled as a modifier because this element negates the request to occur (ie, this is a request for the medication not to be ordered or prescribed, etc)
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            18. MedicationRequest.medication[x]
            Definition

            Identifies the medication being requested. This is a link to a resource that represents the medication which may be the details of the medication or simply an attribute carrying a code that identifies the medication from a known list of medications.

            ShortMedication to be taken
            Comments

            If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the Medication resource is recommended. For example, if you require form or lot number or if the medication is compounded or extemporaneously prepared, then you must reference the Medication resource.

            Control1..1
            BindingFor example codes, see SNOMEDCTMedicationCodeshttp://hl7.org/fhir/ValueSet/medication-codes
            (example to http://hl7.org/fhir/ValueSet/medication-codes)

            A coded concept identifying substance or product that can be ordered.

            TypeChoice of: CodeableConcept, Reference(Medication)
            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
            Is Modifierfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            SlicingThis element introduces a set of slices on MedicationRequest.medication[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
            • type @ $this
            • 20. MedicationRequest.medication[x]:medicationCodeableConcept
              Slice NamemedicationCodeableConcept
              Definition

              Identifies the medication being requested. This is a link to a resource that represents the medication which may be the details of the medication or simply an attribute carrying a code that identifies the medication from a known list of medications.

              ShortCoded Prescribed MedicationMedication to be taken
              Comments

              If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the Medication resource is recommended. For example, if you require form or lot number or if the medication is compounded or extemporaneously prepared, then you must reference the Medication resource.

              Control01..1
              BindingFor example codes, see SNOMEDCTMedicationCodeshttp://hl7.org/fhir/ValueSet/medication-codes
              (example to http://hl7.org/fhir/ValueSet/medication-codes)
              Additional BindingsPurposeDocumentation
              Australian Medication .Preferred

              This value set is for use when AMT (Australian Medicines Terminology) codes are preferred.

              PBS Item CodesPreferred

              This value set is for use when PBS (Pharmaceutical Benefits Scheme) item codes are preferred.

              MIMSPreferred

              This value set is for use when MIMS (Monthly Index of Medical Specialties) codes are preferred.

              GTINPreferred

              This value set is for use when GTIN (Global Trade Item Number) codes are preferred.

              TypeCodeableConcept, Reference(Medication)
              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
              Is Modifierfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              22. MedicationRequest.medication[x]:medicationCodeableConcept.text
              Definition

              A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

              This may be a brand or generic name as suitable for the intent of the entry.


              A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

              ShortMedication primary textPlain text representation of the concept
              Comments

              Very often the text is the same as a displayName of one of the codings.

              Control0..1
              Typestring
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Requirements

              The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              24. MedicationRequest.medication[x]:medicationReference
              Slice NamemedicationReference
              Definition

              Identifies the medication being requested. This is a link to a resource that represents the medication which may be the details of the medication or simply an attribute carrying a code that identifies the medication from a known list of medications.

              ShortPrescribed MedicationMedication to be taken
              Comments

              If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the Medication resource is recommended. For example, if you require form or lot number or if the medication is compounded or extemporaneously prepared, then you must reference the Medication resource.

              Control01..1
              TypeReference(Medication), CodeableConcept
              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
              Is Modifierfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              26. MedicationRequest.subject
              Definition

              A link to a resource representing the person or set of individuals to whom the medication will be given.

              ShortWho or group medication request is for
              Comments

              The subject on a medication request is mandatory. For the secondary use case where the actual subject is not provided, there still must be an anonymized subject specified.

              Control1..1
              TypeReference(Patient, Group)
              Is Modifierfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              28. MedicationRequest.supportingInformation
              Definition

              Include additional information (for example, patient height and weight) that supports the ordering of the medication.

              ShortInformation to support ordering of the medication
              Control0..*
              TypeReference(Resource)
              Is Modifierfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              SlicingThis element introduces a set of slices on MedicationRequest.supportingInformation. The slices areUnordered and Open, and can be differentiated using the following discriminators:
              • profile @ resolve()
              • 30. MedicationRequest.supportingInformation:bodyHeight
                Slice NamebodyHeight
                Definition

                Include additional information (for example, patient height and weight) that supports the ordering of the medication.

                ShortObservation of Body HeightInformation to support ordering of the medication
                Control0..1*
                TypeReference(Observation Body Height Profile, Resource)
                Is Modifierfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                32. MedicationRequest.supportingInformation:bodyWeight
                Slice NamebodyWeight
                Definition

                Include additional information (for example, patient height and weight) that supports the ordering of the medication.

                ShortObservation of Body WeightInformation to support ordering of the medication
                Control0..1*
                TypeReference(Observation Body Weight Profile, Resource)
                Is Modifierfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                34. MedicationRequest.authoredOn
                Definition

                The date (and perhaps time) when the prescription was initially written or authored on.

                ShortCreated dateWhen request was initially authored
                Control0..1
                TypedateTime
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                36. MedicationRequest.reasonCode
                Definition

                The reason or the indication for ordering or not ordering the medication.

                ShortReason or indication for ordering or not ordering the medication
                Comments

                This could be a diagnosis code. If a full condition record exists or additional detail is needed, use reasonReference.

                Control0..*
                BindingThe codes SHOULD be taken from For example codes, see Reason for Request .http://hl7.org/fhir/ValueSet/condition-code
                (preferred to https://healthterminologies.gov.au/fhir/ValueSet/reason-for-request-1)
                TypeCodeableConcept
                Is Modifierfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                38. MedicationRequest.dosageInstruction
                Definition

                Indicates how the medication is/was taken or should be taken by the patient.


                Indicates how the medication is to be used by the patient.

                ShortDosage information in an Australian healthcare contextHow the medication should be taken
                Comments

                There are examples where a medication request may include the option of an oral dose or an Intravenous or Intramuscular dose. For example, "Ondansetron 8mg orally or IV twice a day as needed for nausea" or "Compazine® (prochlorperazine) 5-10mg PO or 25mg PR bid prn nausea or vomiting". In these cases, two medication requests would be created that could be grouped together. The decision on which dose and route of administration to use is based on the patient's condition at the time the dose is needed.

                Control0..*
                TypeDosage(AU Base Dosage)
                Is Modifierfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                40. MedicationRequest.dispenseRequest
                Definition

                Indicates the specific details for the dispense or medication supply part of a medication request (also known as a Medication Prescription or Medication Order). Note that this information is not always sent with the order. There may be in some settings (e.g. hospitals) institutional or system support for completing the dispense details in the pharmacy department.

                ShortRequested dispensingMedication supply authorization
                Control0..1
                TypeBackboneElement
                Is Modifierfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                42. MedicationRequest.dispenseRequest.modifierExtension
                Definition

                May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                ShortExtensions that cannot be ignored even if unrecognized
                Comments

                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                Control0..*
                TypeExtension
                Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                Summarytrue
                Requirements

                Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                Alternate Namesextensions, user content, modifiers
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                44. MedicationRequest.dispenseRequest.numberOfRepeatsAllowed
                Definition

                An integer indicating the number of times, in addition to the original dispense, (aka refills or repeats) that the patient can receive the prescribed medication. Usage Notes: This integer does not include the original order dispense. This means that if an order indicates dispense 30 tablets plus "3 repeats", then the order can be dispensed a total of 4 times and the patient can receive a total of 120 tablets. A prescriber may explicitly say that zero refills are permitted after the initial dispense.

                ShortMaximum repeats authorisedNumber of refills authorized
                Comments

                If displaying "number of authorized fills", add 1 to this number.

                Control0..1
                TypeunsignedInt
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                46. MedicationRequest.substitution
                Definition

                Indicates whether or not substitution can or should be part of the dispense. In some cases, substitution must happen, in other cases substitution must not happen. This block explains the prescriber's intent. If nothing is specified substitution may be done.

                ShortBrand substitution detailsAny restrictions on medication substitution
                Control0..1
                TypeBackboneElement
                Is Modifierfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                48. MedicationRequest.substitution.modifierExtension
                Definition

                May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                ShortExtensions that cannot be ignored even if unrecognized
                Comments

                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                Control0..*
                TypeExtension
                Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                Summarytrue
                Requirements

                Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                Alternate Namesextensions, user content, modifiers
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                50. MedicationRequest.substitution.allowed[x]
                Definition

                True if the prescriber allows a different drug to be dispensed from what was prescribed.

                ShortBrand substitution flagWhether substitution is allowed or not
                Comments

                This element is labeled as a modifier because whether substitution is allow or not, it cannot be ignored.

                Control1..1
                BindingFor example codes, see ActSubstanceAdminSubstitutionCodehttp://terminology.hl7.org/ValueSet/v3-ActSubstanceAdminSubstitutionCode
                (example to http://terminology.hl7.org/ValueSet/v3-ActSubstanceAdminSubstitutionCode)

                Identifies the type of substitution allowed.

                TypeChoice of: boolean, CodeableConcept
                [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                52. MedicationRequest.substitution.reason
                Definition

                Indicates the reason for the substitution, or why substitution must or must not be performed.

                ShortWhy should (not) substitution be made
                Control0..1
                BindingThe codes SHOULD be taken from For example codes, see Medicine Substitution Reason .http://terminology.hl7.org/ValueSet/v3-SubstanceAdminSubstitutionReason
                (preferred to https://healthterminologies.gov.au/fhir/ValueSet/medicine-substitution-reason-1)
                TypeCodeableConcept
                Is Modifierfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

                Guidance on how to interpret the contents of this table can be found here

                0. MedicationRequest
                Definition

                An order or request for both supply of the medication and the instructions for administration of the medication to a patient. The resource is called "MedicationRequest" rather than "MedicationPrescription" or "MedicationOrder" to generalize the use across inpatient and outpatient settings, including care plans, etc., and to harmonize with workflow patterns.

                ShortA request for a medication for a patient in an Australian healthcare context
                Control0..*
                Is Modifierfalse
                Summaryfalse
                Alternate NamesPrescription, Order
                Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
                dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
                dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
                dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
                dom-6: A resource should have narrative for robust management (text.`div`.exists())
                2. MedicationRequest.id
                Definition

                The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

                ShortLogical id of this artifact
                Comments

                The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

                Control0..1
                Typeid
                Is Modifierfalse
                Summarytrue
                4. MedicationRequest.meta
                Definition

                The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.

                ShortMetadata about the resource
                Control0..1
                TypeMeta
                Is Modifierfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                6. MedicationRequest.implicitRules
                Definition

                A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

                ShortA set of rules under which this content was created
                Comments

                Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

                Control0..1
                Typeuri
                Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                8. MedicationRequest.language
                Definition

                The base language in which the resource is written.

                ShortLanguage of the resource content
                Comments

                Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

                Control0..1
                BindingThe codes SHOULD be taken from CommonLanguages
                (preferred to http://hl7.org/fhir/ValueSet/languages)

                A human language.

                Additional BindingsPurpose
                AllLanguagesMax Binding
                Typecode
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                10. MedicationRequest.text
                Definition

                A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.

                ShortText summary of the resource, for human interpretation
                Comments

                Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.

                Control0..1
                TypeNarrative
                Is Modifierfalse
                Summaryfalse
                Alternate Namesnarrative, html, xhtml, display
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                12. MedicationRequest.contained
                Definition

                These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.

                ShortContained, inline Resources
                Comments

                This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.

                Control0..*
                TypeResource
                Is Modifierfalse
                Summaryfalse
                Alternate Namesinline resources, anonymous resources, contained resources
                14. MedicationRequest.extension
                Definition

                An Extension

                ShortExtension
                Control0..*
                TypeExtension
                Is Modifierfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                SlicingThis element introduces a set of slices on MedicationRequest.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                • value @ url
                • 16. MedicationRequest.extension:subsidisedConcurrentSupply
                  Slice NamesubsidisedConcurrentSupply
                  Definition

                  The grounds which authorise a PBS or RPBS subsidy for the concurrent supply of a medication item specified in a prescription and all of its repeats.

                  ShortGrounds for concurrent supply of medication
                  Control0..1
                  This element is affected by the following invariants: ele-1
                  TypeExtension(Subsidised Concurrent Supply) (Extension Type: Coding)
                  Is Modifierfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  18. MedicationRequest.modifierExtension
                  Definition

                  May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                  Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                  ShortExtensions that cannot be ignored
                  Comments

                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                  Control0..*
                  TypeExtension
                  Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
                  Summaryfalse
                  Requirements

                  Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                  Alternate Namesextensions, user content
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  20. MedicationRequest.identifier
                  Definition

                  Identifiers associated with this medication request that are defined by business processes and/or used to refer to it when a direct URL reference to the resource itself is not appropriate. They are business identifiers assigned to this resource by the performer or other systems and remain constant as the resource is updated and propagates from server to server.

                  ShortExternal ids for this request
                  Comments

                  This is a business identifier, not a resource identifier.

                  NoteThis is a business identifier, not a resource identifier (see discussion)
                  Control0..*
                  This element is affected by the following invariants: ele-1
                  TypeIdentifier(Identifier, AU ETP Prescription Identifier, AU Local Prescription Identifier)
                  Is Modifierfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  22. MedicationRequest.status
                  Definition

                  A code specifying the current state of the order. Generally, this will be active or completed state.

                  Shortactive | on-hold | cancelled | completed | entered-in-error | stopped | draft | unknown
                  Comments

                  This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.

                  Control1..1
                  BindingThe codes SHALL be taken from medicationrequest Status
                  (required to http://hl7.org/fhir/ValueSet/medicationrequest-status|4.0.1)

                  A coded concept specifying the state of the prescribing event. Describes the lifecycle of the prescription.

                  Typecode
                  Is Modifiertrue because This element is labeled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summarytrue
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  24. MedicationRequest.statusReason
                  Definition

                  Captures the reason for the current state of the MedicationRequest.

                  ShortReason for current status
                  Comments

                  This is generally only used for "exception" statuses such as "suspended" or "cancelled". The reason why the MedicationRequest was created at all is captured in reasonCode, not here.

                  Control0..1
                  BindingFor example codes, see medicationRequest Status Reason Codes
                  (example to http://hl7.org/fhir/ValueSet/medicationrequest-status-reason)

                  Identifies the reasons for a given status.

                  TypeCodeableConcept
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  26. MedicationRequest.intent
                  Definition

                  Whether the request is a proposal, plan, or an original order.

                  Shortproposal | plan | order | original-order | reflex-order | filler-order | instance-order | option
                  Comments

                  It is expected that the type of requester will be restricted for different stages of a MedicationRequest. For example, Proposals can be created by a patient, relatedPerson, Practitioner or Device. Plans can be created by Practitioners, Patients, RelatedPersons and Devices. Original orders can be created by a Practitioner only.

                  An instance-order is an instantiation of a request or order and may be used to populate Medication Administration Record.

                  This element is labeled as a modifier because the intent alters when and how the resource is actually applicable.

                  Control1..1
                  BindingThe codes SHALL be taken from medicationRequest Intent
                  (required to http://hl7.org/fhir/ValueSet/medicationrequest-intent|4.0.1)

                  The kind of medication order.

                  Typecode
                  Is Modifiertrue because This element changes the interpretation of all descriptive attributes. For example "the time the request is recommended to occur" vs. "the time the request is authorized to occur" or "who is recommended to perform the request" vs. "who is authorized to perform the request
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summarytrue
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  28. MedicationRequest.category
                  Definition

                  Indicates the type of medication request (for example, where the medication is expected to be consumed or administered (i.e. inpatient or outpatient)).

                  ShortType of medication usage
                  Comments

                  The category can be used to include where the medication is expected to be consumed or other types of requests.

                  Control0..*
                  BindingFor example codes, see medicationRequest Category Codes
                  (example to http://hl7.org/fhir/ValueSet/medicationrequest-category)

                  A coded concept identifying the category of medication request. For example, where the medication is to be consumed or administered, or the type of medication treatment.

                  TypeCodeableConcept
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  30. MedicationRequest.priority
                  Definition

                  Indicates how quickly the Medication Request should be addressed with respect to other requests.

                  Shortroutine | urgent | asap | stat
                  Control0..1
                  BindingThe codes SHALL be taken from RequestPriority
                  (required to http://hl7.org/fhir/ValueSet/request-priority|4.0.1)

                  Identifies the level of importance to be assigned to actioning the request.

                  Typecode
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summarytrue
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  32. MedicationRequest.doNotPerform
                  Definition

                  If true indicates that the provider is asking for the medication request not to occur.

                  ShortTrue if request is prohibiting action
                  Comments

                  If do not perform is not specified, the request is a positive request e.g. "do perform".

                  Control0..1
                  Typeboolean
                  Is Modifiertrue because This element is labeled as a modifier because this element negates the request to occur (ie, this is a request for the medication not to be ordered or prescribed, etc)
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summarytrue
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  34. MedicationRequest.reported[x]
                  Definition

                  Indicates if this record was captured as a secondary 'reported' record rather than as an original primary source-of-truth record. It may also indicate the source of the report.

                  ShortReported rather than primary record
                  Control0..1
                  TypeChoice of: boolean, Reference(Patient, Practitioner, PractitionerRole, RelatedPerson, Organization)
                  [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summarytrue
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  36. MedicationRequest.medication[x]
                  Definition

                  Identifies the medication being requested. This is a link to a resource that represents the medication which may be the details of the medication or simply an attribute carrying a code that identifies the medication from a known list of medications.

                  ShortMedication to be taken
                  Comments

                  If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the Medication resource is recommended. For example, if you require form or lot number or if the medication is compounded or extemporaneously prepared, then you must reference the Medication resource.

                  Control1..1
                  BindingFor example codes, see SNOMEDCTMedicationCodes
                  (example to http://hl7.org/fhir/ValueSet/medication-codes)

                  A coded concept identifying substance or product that can be ordered.

                  TypeChoice of: CodeableConcept, Reference(Medication)
                  [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                  Is Modifierfalse
                  Summarytrue
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  SlicingThis element introduces a set of slices on MedicationRequest.medication[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
                  • type @ $this
                  • 38. MedicationRequest.medication[x]:medicationCodeableConcept
                    Slice NamemedicationCodeableConcept
                    Definition

                    Identifies the medication being requested. This is a link to a resource that represents the medication which may be the details of the medication or simply an attribute carrying a code that identifies the medication from a known list of medications.

                    ShortCoded Prescribed Medication
                    Comments

                    If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the Medication resource is recommended. For example, if you require form or lot number or if the medication is compounded or extemporaneously prepared, then you must reference the Medication resource.

                    Control0..1
                    BindingFor example codes, see SNOMEDCTMedicationCodes
                    (example to http://hl7.org/fhir/ValueSet/medication-codes)
                    Additional BindingsPurposeDocumentation
                    Australian Medication .Preferred

                    This value set is for use when AMT (Australian Medicines Terminology) codes are preferred.

                    PBS Item CodesPreferred

                    This value set is for use when PBS (Pharmaceutical Benefits Scheme) item codes are preferred.

                    MIMSPreferred

                    This value set is for use when MIMS (Monthly Index of Medical Specialties) codes are preferred.

                    GTINPreferred

                    This value set is for use when GTIN (Global Trade Item Number) codes are preferred.

                    TypeCodeableConcept
                    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                    Is Modifierfalse
                    Summarytrue
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    40. MedicationRequest.medication[x]:medicationCodeableConcept.id
                    Definition

                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                    ShortUnique id for inter-element referencing
                    Control0..1
                    Typestring
                    Is Modifierfalse
                    XML FormatIn the XML format, this property is represented as an attribute.
                    Summaryfalse
                    42. MedicationRequest.medication[x]:medicationCodeableConcept.extension
                    Definition

                    May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                    ShortAdditional content defined by implementations
                    Comments

                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                    Control0..*
                    TypeExtension
                    Is Modifierfalse
                    Summaryfalse
                    Alternate Namesextensions, user content
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    SlicingThis element introduces a set of slices on MedicationRequest.medication[x].extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                    • value @ url
                    • 44. MedicationRequest.medication[x]:medicationCodeableConcept.coding
                      Definition

                      A reference to a code defined by a terminology system.

                      ShortCode defined by a terminology system
                      Comments

                      Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                      Control0..*
                      TypeCoding
                      Is Modifierfalse
                      Summarytrue
                      Requirements

                      Allows for alternative encodings within a code system, and translations to other code systems.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      46. MedicationRequest.medication[x]:medicationCodeableConcept.coding.id
                      Definition

                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                      ShortUnique id for inter-element referencing
                      Control0..1
                      Typestring
                      Is Modifierfalse
                      XML FormatIn the XML format, this property is represented as an attribute.
                      Summaryfalse
                      48. MedicationRequest.medication[x]:medicationCodeableConcept.coding.extension
                      Definition

                      An Extension

                      ShortExtension
                      Control0..*
                      TypeExtension
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      SlicingThis element introduces a set of slices on MedicationRequest.medication[x].coding.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                      • value @ url
                      • 50. MedicationRequest.medication[x]:medicationCodeableConcept.coding.extension:medicationClass
                        Slice NamemedicationClass
                        Definition

                        The type of information covered by the medication coding, e.g. branded product with no strength or form.

                        ShortMedication type
                        Control0..1
                        TypeExtension(Medication Type) (Extension Type: Coding)
                        Is Modifierfalse
                        Summaryfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        52. MedicationRequest.medication[x]:medicationCodeableConcept.coding.system
                        Definition

                        The identification of the code system that defines the meaning of the symbol in the code.

                        ShortIdentity of the terminology system
                        Comments

                        The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

                        Control0..1
                        Typeuri
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Summarytrue
                        Requirements

                        Need to be unambiguous about the source of the definition of the symbol.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        54. MedicationRequest.medication[x]:medicationCodeableConcept.coding.version
                        Definition

                        The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.

                        ShortVersion of the system - if relevant
                        Comments

                        Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.

                        NoteThis is a business version Id, not a resource version Id (see discussion)
                        Control0..1
                        Typestring
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Summarytrue
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        56. MedicationRequest.medication[x]:medicationCodeableConcept.coding.code
                        Definition

                        A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

                        ShortSymbol in syntax defined by the system
                        Control0..1
                        Typecode
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Summarytrue
                        Requirements

                        Need to refer to a particular code in the system.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        58. MedicationRequest.medication[x]:medicationCodeableConcept.coding.display
                        Definition

                        A representation of the meaning of the code in the system, following the rules of the system.

                        ShortRepresentation defined by the system
                        Control0..1
                        Typestring
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Summarytrue
                        Requirements

                        Need to be able to carry a human-readable meaning of the code for readers that do not know the system.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        60. MedicationRequest.medication[x]:medicationCodeableConcept.coding.userSelected
                        Definition

                        Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).

                        ShortIf this coding was chosen directly by the user
                        Comments

                        Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.

                        Control0..1
                        Typeboolean
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Summarytrue
                        Requirements

                        This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        62. MedicationRequest.medication[x]:medicationCodeableConcept.text
                        Definition

                        A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

                        This may be a brand or generic name as suitable for the intent of the entry.

                        ShortMedication primary text
                        Comments

                        Very often the text is the same as a displayName of one of the codings.

                        Control0..1
                        Typestring
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Summarytrue
                        Requirements

                        The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        64. MedicationRequest.medication[x]:medicationReference
                        Slice NamemedicationReference
                        Definition

                        Identifies the medication being requested. This is a link to a resource that represents the medication which may be the details of the medication or simply an attribute carrying a code that identifies the medication from a known list of medications.

                        ShortPrescribed Medication
                        Comments

                        If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the Medication resource is recommended. For example, if you require form or lot number or if the medication is compounded or extemporaneously prepared, then you must reference the Medication resource.

                        Control0..1
                        TypeReference(Medication)
                        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                        Is Modifierfalse
                        Summarytrue
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        66. MedicationRequest.subject
                        Definition

                        A link to a resource representing the person or set of individuals to whom the medication will be given.

                        ShortWho or group medication request is for
                        Comments

                        The subject on a medication request is mandatory. For the secondary use case where the actual subject is not provided, there still must be an anonymized subject specified.

                        Control1..1
                        TypeReference(Patient, Group)
                        Is Modifierfalse
                        Summarytrue
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        68. MedicationRequest.encounter
                        Definition

                        The Encounter during which this [x] was created or to which the creation of this record is tightly associated.

                        ShortEncounter created as part of encounter/admission/stay
                        Comments

                        This will typically be the encounter the event occurred within, but some activities may be initiated prior to or after the official completion of an encounter but still be tied to the context of the encounter." If there is a need to link to episodes of care they will be handled with an extension.

                        Control0..1
                        TypeReference(Encounter)
                        Is Modifierfalse
                        Summaryfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        70. MedicationRequest.supportingInformation
                        Definition

                        Include additional information (for example, patient height and weight) that supports the ordering of the medication.

                        ShortInformation to support ordering of the medication
                        Control0..*
                        TypeReference(Resource)
                        Is Modifierfalse
                        Summaryfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        SlicingThis element introduces a set of slices on MedicationRequest.supportingInformation. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                        • profile @ resolve()
                        • 72. MedicationRequest.supportingInformation:bodyHeight
                          Slice NamebodyHeight
                          Definition

                          Include additional information (for example, patient height and weight) that supports the ordering of the medication.

                          ShortObservation of Body Height
                          Control0..1
                          TypeReference(Observation Body Height Profile)
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          74. MedicationRequest.supportingInformation:bodyWeight
                          Slice NamebodyWeight
                          Definition

                          Include additional information (for example, patient height and weight) that supports the ordering of the medication.

                          ShortObservation of Body Weight
                          Control0..1
                          TypeReference(Observation Body Weight Profile)
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          76. MedicationRequest.authoredOn
                          Definition

                          The date (and perhaps time) when the prescription was initially written or authored on.

                          ShortCreated date
                          Control0..1
                          TypedateTime
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          78. MedicationRequest.requester
                          Definition

                          The individual, organization, or device that initiated the request and has responsibility for its activation.

                          ShortWho/What requested the Request
                          Control0..1
                          TypeReference(Practitioner, PractitionerRole, Organization, Patient, RelatedPerson, Device)
                          Is Modifierfalse
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          80. MedicationRequest.performer
                          Definition

                          The specified desired performer of the medication treatment (e.g. the performer of the medication administration).

                          ShortIntended performer of administration
                          Control0..1
                          TypeReference(Practitioner, PractitionerRole, Organization, Patient, Device, RelatedPerson, CareTeam)
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          82. MedicationRequest.performerType
                          Definition

                          Indicates the type of performer of the administration of the medication.

                          ShortDesired kind of performer of the medication administration
                          Comments

                          If specified without indicating a performer, this indicates that the performer must be of the specified type. If specified with a performer then it indicates the requirements of the performer if the designated performer is not available.

                          Control0..1
                          BindingFor example codes, see ProcedurePerformerRoleCodes
                          (example to http://hl7.org/fhir/ValueSet/performer-role)

                          Identifies the type of individual that is desired to administer the medication.

                          TypeCodeableConcept
                          Is Modifierfalse
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          84. MedicationRequest.recorder
                          Definition

                          The person who entered the order on behalf of another individual for example in the case of a verbal or a telephone order.

                          ShortPerson who entered the request
                          Control0..1
                          TypeReference(Practitioner, PractitionerRole)
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          86. MedicationRequest.reasonCode
                          Definition

                          The reason or the indication for ordering or not ordering the medication.

                          ShortReason or indication for ordering or not ordering the medication
                          Comments

                          This could be a diagnosis code. If a full condition record exists or additional detail is needed, use reasonReference.

                          Control0..*
                          BindingThe codes SHOULD be taken from Reason for Request .
                          (preferred to https://healthterminologies.gov.au/fhir/ValueSet/reason-for-request-1)
                          TypeCodeableConcept
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          88. MedicationRequest.reasonReference
                          Definition

                          Condition or observation that supports why the medication was ordered.

                          ShortCondition or observation that supports why the prescription is being written
                          Comments

                          This is a reference to a condition or observation that is the reason for the medication order. If only a code exists, use reasonCode.

                          Control0..*
                          TypeReference(Condition, Observation)
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          90. MedicationRequest.instantiatesCanonical
                          Definition

                          The URL pointing to a protocol, guideline, orderset, or other definition that is adhered to in whole or in part by this MedicationRequest.

                          ShortInstantiates FHIR protocol or definition
                          Control0..*
                          Typecanonical
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          92. MedicationRequest.instantiatesUri
                          Definition

                          The URL pointing to an externally maintained protocol, guideline, orderset or other definition that is adhered to in whole or in part by this MedicationRequest.

                          ShortInstantiates external protocol or definition
                          Control0..*
                          Typeuri
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          94. MedicationRequest.basedOn
                          Definition

                          A plan or request that is fulfilled in whole or in part by this medication request.

                          ShortWhat request fulfills
                          Control0..*
                          TypeReference(CarePlan, MedicationRequest, ServiceRequest, ImmunizationRecommendation)
                          Is Modifierfalse
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          96. MedicationRequest.groupIdentifier
                          Definition

                          A shared identifier common to all requests that were authorized more or less simultaneously by a single author, representing the identifier of the requisition or prescription.

                          ShortComposite request this is part of
                          Control0..1
                          TypeIdentifier
                          Is Modifierfalse
                          Summarytrue
                          Requirements

                          Requests are linked either by a "basedOn" relationship (i.e. one request is fulfilling another) or by having a common requisition. Requests that are part of the same requisition are generally treated independently from the perspective of changing their state or maintaining them after initial creation.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          98. MedicationRequest.courseOfTherapyType
                          Definition

                          The description of the overall patte3rn of the administration of the medication to the patient.

                          ShortOverall pattern of medication administration
                          Comments

                          This attribute should not be confused with the protocol of the medication.

                          Control0..1
                          BindingFor example codes, see medicationRequest Course of Therapy Codes
                          (example to http://hl7.org/fhir/ValueSet/medicationrequest-course-of-therapy)

                          Identifies the overall pattern of medication administratio.

                          TypeCodeableConcept
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          100. MedicationRequest.insurance
                          Definition

                          Insurance plans, coverage extensions, pre-authorizations and/or pre-determinations that may be required for delivering the requested service.

                          ShortAssociated insurance coverage
                          Control0..*
                          TypeReference(Coverage, ClaimResponse)
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          102. MedicationRequest.note
                          Definition

                          Extra information about the prescription that could not be conveyed by the other attributes.

                          ShortInformation about the prescription
                          Control0..*
                          TypeAnnotation
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          104. MedicationRequest.dosageInstruction
                          Definition

                          Indicates how the medication is/was taken or should be taken by the patient.

                          ShortDosage information in an Australian healthcare context
                          Comments

                          There are examples where a medication request may include the option of an oral dose or an Intravenous or Intramuscular dose. For example, "Ondansetron 8mg orally or IV twice a day as needed for nausea" or "Compazine® (prochlorperazine) 5-10mg PO or 25mg PR bid prn nausea or vomiting". In these cases, two medication requests would be created that could be grouped together. The decision on which dose and route of administration to use is based on the patient's condition at the time the dose is needed.

                          Control0..*
                          TypeDosage(AU Base Dosage)
                          Is Modifierfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          106. MedicationRequest.dispenseRequest
                          Definition

                          Indicates the specific details for the dispense or medication supply part of a medication request (also known as a Medication Prescription or Medication Order). Note that this information is not always sent with the order. There may be in some settings (e.g. hospitals) institutional or system support for completing the dispense details in the pharmacy department.

                          ShortRequested dispensing
                          Control0..1
                          TypeBackboneElement
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          108. MedicationRequest.dispenseRequest.id
                          Definition

                          Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                          ShortUnique id for inter-element referencing
                          Control0..1
                          Typestring
                          Is Modifierfalse
                          XML FormatIn the XML format, this property is represented as an attribute.
                          Summaryfalse
                          110. MedicationRequest.dispenseRequest.extension
                          Definition

                          May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                          ShortAdditional content defined by implementations
                          Comments

                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                          Control0..*
                          TypeExtension
                          Is Modifierfalse
                          Summaryfalse
                          Alternate Namesextensions, user content
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          112. MedicationRequest.dispenseRequest.modifierExtension
                          Definition

                          May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                          Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                          ShortExtensions that cannot be ignored even if unrecognized
                          Comments

                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                          Control0..*
                          TypeExtension
                          Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                          Summarytrue
                          Requirements

                          Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                          Alternate Namesextensions, user content, modifiers
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          114. MedicationRequest.dispenseRequest.initialFill
                          Definition

                          Indicates the quantity or duration for the first dispense of the medication.

                          ShortFirst fill details
                          Comments

                          If populating this element, either the quantity or the duration must be included.

                          Control0..1
                          TypeBackboneElement
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          116. MedicationRequest.dispenseRequest.initialFill.id
                          Definition

                          Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                          ShortUnique id for inter-element referencing
                          Control0..1
                          Typestring
                          Is Modifierfalse
                          XML FormatIn the XML format, this property is represented as an attribute.
                          Summaryfalse
                          118. MedicationRequest.dispenseRequest.initialFill.extension
                          Definition

                          May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                          ShortAdditional content defined by implementations
                          Comments

                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                          Control0..*
                          TypeExtension
                          Is Modifierfalse
                          Summaryfalse
                          Alternate Namesextensions, user content
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          120. MedicationRequest.dispenseRequest.initialFill.modifierExtension
                          Definition

                          May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                          Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                          ShortExtensions that cannot be ignored even if unrecognized
                          Comments

                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                          Control0..*
                          TypeExtension
                          Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                          Summarytrue
                          Requirements

                          Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                          Alternate Namesextensions, user content, modifiers
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          122. MedicationRequest.dispenseRequest.initialFill.quantity
                          Definition

                          The amount or quantity to provide as part of the first dispense.

                          ShortFirst fill quantity
                          Control0..1
                          TypeQuantity(SimpleQuantity)
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          124. MedicationRequest.dispenseRequest.initialFill.duration
                          Definition

                          The length of time that the first dispense is expected to last.

                          ShortFirst fill duration
                          Control0..1
                          TypeDuration
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          126. MedicationRequest.dispenseRequest.dispenseInterval
                          Definition

                          The minimum period of time that must occur between dispenses of the medication.

                          ShortMinimum period of time between dispenses
                          Control0..1
                          TypeDuration
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          128. MedicationRequest.dispenseRequest.validityPeriod
                          Definition

                          This indicates the validity period of a prescription (stale dating the Prescription).

                          ShortTime period supply is authorized for
                          Comments

                          It reflects the prescribers' perspective for the validity of the prescription. Dispenses must not be made against the prescription outside of this period. The lower-bound of the Dispensing Window signifies the earliest date that the prescription can be filled for the first time. If an upper-bound is not specified then the Prescription is open-ended or will default to a stale-date based on regulations.

                          Control0..1
                          TypePeriod
                          Is Modifierfalse
                          Summaryfalse
                          Requirements

                          Indicates when the Prescription becomes valid, and when it ceases to be a dispensable Prescription.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          130. MedicationRequest.dispenseRequest.numberOfRepeatsAllowed
                          Definition

                          An integer indicating the number of times, in addition to the original dispense, (aka refills or repeats) that the patient can receive the prescribed medication. Usage Notes: This integer does not include the original order dispense. This means that if an order indicates dispense 30 tablets plus "3 repeats", then the order can be dispensed a total of 4 times and the patient can receive a total of 120 tablets. A prescriber may explicitly say that zero refills are permitted after the initial dispense.

                          ShortMaximum repeats authorised
                          Comments

                          If displaying "number of authorized fills", add 1 to this number.

                          Control0..1
                          TypeunsignedInt
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          132. MedicationRequest.dispenseRequest.quantity
                          Definition

                          The amount that is to be dispensed for one fill.

                          ShortAmount of medication to supply per dispense
                          Control0..1
                          TypeQuantity(SimpleQuantity)
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          134. MedicationRequest.dispenseRequest.expectedSupplyDuration
                          Definition

                          Identifies the period time over which the supplied product is expected to be used, or the length of time the dispense is expected to last.

                          ShortNumber of days supply per dispense
                          Comments

                          In some situations, this attribute may be used instead of quantity to identify the amount supplied by how long it is expected to last, rather than the physical quantity issued, e.g. 90 days supply of medication (based on an ordered dosage). When possible, it is always better to specify quantity, as this tends to be more precise. expectedSupplyDuration will always be an estimate that can be influenced by external factors.

                          Control0..1
                          TypeDuration
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          136. MedicationRequest.dispenseRequest.performer
                          Definition

                          Indicates the intended dispensing Organization specified by the prescriber.

                          ShortIntended dispenser
                          Control0..1
                          TypeReference(Organization)
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          138. MedicationRequest.substitution
                          Definition

                          Indicates whether or not substitution can or should be part of the dispense. In some cases, substitution must happen, in other cases substitution must not happen. This block explains the prescriber's intent. If nothing is specified substitution may be done.

                          ShortBrand substitution details
                          Control0..1
                          TypeBackboneElement
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          140. MedicationRequest.substitution.id
                          Definition

                          Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                          ShortUnique id for inter-element referencing
                          Control0..1
                          Typestring
                          Is Modifierfalse
                          XML FormatIn the XML format, this property is represented as an attribute.
                          Summaryfalse
                          142. MedicationRequest.substitution.extension
                          Definition

                          May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                          ShortAdditional content defined by implementations
                          Comments

                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                          Control0..*
                          TypeExtension
                          Is Modifierfalse
                          Summaryfalse
                          Alternate Namesextensions, user content
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          144. MedicationRequest.substitution.modifierExtension
                          Definition

                          May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                          Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                          ShortExtensions that cannot be ignored even if unrecognized
                          Comments

                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                          Control0..*
                          TypeExtension
                          Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                          Summarytrue
                          Requirements

                          Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                          Alternate Namesextensions, user content, modifiers
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          146. MedicationRequest.substitution.allowed[x]
                          Definition

                          True if the prescriber allows a different drug to be dispensed from what was prescribed.

                          ShortBrand substitution flag
                          Comments

                          This element is labeled as a modifier because whether substitution is allow or not, it cannot be ignored.

                          Control1..1
                          BindingFor example codes, see ActSubstanceAdminSubstitutionCode
                          (example to http://terminology.hl7.org/ValueSet/v3-ActSubstanceAdminSubstitutionCode)

                          Identifies the type of substitution allowed.

                          TypeChoice of: boolean, CodeableConcept
                          [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          148. MedicationRequest.substitution.reason
                          Definition

                          Indicates the reason for the substitution, or why substitution must or must not be performed.

                          ShortWhy should (not) substitution be made
                          Control0..1
                          BindingThe codes SHOULD be taken from Medicine Substitution Reason .
                          (preferred to https://healthterminologies.gov.au/fhir/ValueSet/medicine-substitution-reason-1)
                          TypeCodeableConcept
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          150. MedicationRequest.priorPrescription
                          Definition

                          A link to a resource representing an earlier order related order or prescription.

                          ShortAn order/prescription that is being replaced
                          Control0..1
                          TypeReference(MedicationRequest)
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          152. MedicationRequest.detectedIssue
                          Definition

                          Indicates an actual or potential clinical issue with or between one or more active or proposed clinical actions for a patient; e.g. Drug-drug interaction, duplicate therapy, dosage alert etc.

                          ShortClinical Issue with action
                          Comments

                          This element can include a detected issue that has been identified either by a decision support system or by a clinician and may include information on the steps that were taken to address the issue.

                          Control0..*
                          TypeReference(DetectedIssue)
                          Is Modifierfalse
                          Summaryfalse
                          Alternate NamesContraindication, Drug Utilization Review (DUR), Alert
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          154. MedicationRequest.eventHistory
                          Definition

                          Links to Provenance records for past versions of this resource or fulfilling request or event resources that identify key state transitions or updates that are likely to be relevant to a user looking at the current version of the resource.

                          ShortA list of events of interest in the lifecycle
                          Comments

                          This might not include provenances for all versions of the request – only those deemed “relevant” or important. This SHALL NOT include the provenance associated with this current version of the resource. (If that provenance is deemed to be a “relevant” change, it will need to be added as part of a later update. Until then, it can be queried directly as the provenance that points to this version using _revinclude All Provenances should have some historical version of this Request as their subject.).

                          Control0..*
                          TypeReference(Provenance)
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))