# AU Core MedicationStatement - AU Core Implementation Guide v2.0.0-preview

* [**Table of Contents**](toc.md)
* [**FHIR Artefacts**](fhirartefacts.md)
* [**Artefacts Summary**](artifacts.md)
* **AU Core MedicationStatement**

## Resource Profile: AU Core MedicationStatement 

| | | |
| :--- | :--- | :--- |
| *Official URL*:http://hl7.org.au/fhir/core/StructureDefinition/au-core-medicationstatement | *Version*:2.0.0-preview | |
| *Standards status:*[Trial-use](http://hl7.org/fhir/R4/versions.html#std-process) | [Maturity Level](https://build.fhir.org/ig/hl7au/au-fhir-base/generalguidance.html#maturity-levels): 2 | *Computable Name*:AUCoreMedicationStatement |
| **Copyright/Legal**: Used by permission of HL7 International, all rights reserved Creative Commons License. HL7 Australia© 2022+; Licensed Under Creative Commons No Rights Reserved. | | |

 
This profile sets minimum expectations for a MedicationStatement resource to record, search, and fetch summary statements of medication use associated with a patient. It is based on the[AU Base MedicationStatement](http://build.fhir.org/ig/hl7au/au-fhir-base/StructureDefinition-au-medicationstatement.html)profile and identifies the**additional**mandatory core elements, extensions, vocabularies and value sets that**SHALL**be present in the MedicationStatement when conforming to this profile. It provides the floor for standards development for specific uses cases in an Australian context. 

See [Comparison with other national and international IGs](comparison.md) for a comparison between AU Core profiles and profiles in other implementation guides.

### Usage Scenarios

The following are supported usage scenarios for this profile:

* Query for a patient's medication usage (current or historical)
* Record or update stated medication usage for a patient

### Profile Specific Implementation Guidance

* See the [Medicine Information](medicine-information.md) page for guidance on how medicinal product identification can be structured in FHIR conformant to AU Core.
* MedicationStatement resources can represent a medication using either a code as `MedicationStatement.medicationCodeableConcept`, or reference a [Medication](http://hl7.org/fhir/R4/medication.html) resource using `MedicationStatement.medicationReference`. 
* Responders are not required to support both a code and a reference, but they **SHALL** support **at least one** of these methods
* When referencing a Medication resource, it is preferred the resource is [contained](http://hl7.org/fhir/R4/references.html#contained) but it may be an external resource
* If an external reference to a Medication resource is used, the responder **SHALL** support the `_include` parameter for searching this element
* A requester **SHALL** support all methods
 
* When populating `MedicationStatement.medicationCodeableConcept` responders **SHALL** correctly populate `MedicationStatement.medicationCodeableConcept.coding` with either a code from [Australian Medication](https://healthterminologies.gov.au/fhir/ValueSet/australian-medication-1) or [PBS Item Codes](https://build.fhir.org/ig/hl7au/au-fhir-base//ValueSet-pbs-item.html), or both, if a coded value is known and **MAY** populate with a code from another code system. 
* Responders **MAY** populate with only text if no coded value is known.
 
* The MedicationStatement resource can represent the clinical indication as a code with `MedicationStatement.reasonCode`, or a reference with `MedicationStatement.reasonReference` to a Condition or other resource. 
* Although both are marked as **Must Support**, responders are not required to support both a code and a reference, but they **SHALL** support **at least one** of these elements
* A requester **SHALL** support both elements
 

**Usages:**

* Examples for this Profile: [MedicationStatement/active-bisoprolol](MedicationStatement-active-bisoprolol.md), [MedicationStatement/completed-bactrim](MedicationStatement-completed-bactrim.md), [MedicationStatement/completed-chloramphenicol](MedicationStatement-completed-chloramphenicol.md) and [MedicationStatement/previous-use-diflucan](MedicationStatement-previous-use-diflucan.md)
* CapabilityStatements using this Profile: [AU Core Requester CapabilityStatement](CapabilityStatement-au-core-requester.md) and [AU Core Responder CapabilityStatement](CapabilityStatement-au-core-responder.md)

You can also check for [usages in the FHIR IG Statistics](https://packages2.fhir.org/xig/hl7.fhir.au.core|current/StructureDefinition/au-core-medicationstatement)

**Changes since version 1.0.0:**

* New Content

### Formal Views of Profile Content

 [Description of Profiles, Differentials, Snapshots and how the different presentations work](http://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#structure-definitions). 

 

Other representations of profile: [CSV](StructureDefinition-au-core-medicationstatement.csv), [Excel](StructureDefinition-au-core-medicationstatement.xlsx), [Schematron](StructureDefinition-au-core-medicationstatement.sch) 

### Notes:

Below is an overview of the mandatory and optional search parameters and combined search parameters. See the [AU Core CapabilityStatements](capability-statements.md) for a complete list of supported RESTful interactions for this IG.

FHIR search operations are described [here](http://hl7.org/fhir/R4/search.html) and the syntax used to describe AU Core interactions is defined [here](general-guidance.md#readsearch-syntax).

Any search parameter defined in FHIR may be 'allowed' by the system unless explicitly marked as "**SHALL NOT**". A few items are marked as **MAY** in this implementation guide to highlight their potential relevance.

* Parameter(s): patient
  * Conformance: **SHALL**
  * Type(s): `reference`
  * Requirements (when used alone or in combination): The requester**SHALL**provide at least an id value and**MAY**provide both the Type and id values. The responder**SHALL**support both.The requester**SHOULD**support chained search patient.identifier using IHI, Medicare Number, and DVA Number identifiers as defined in the AU Core Patient profile. The responder**SHOULD**support chained search patient.identifier using IHI, Medicare Number, and DVA Number identifiers as defined in the AU Core Patient profile.
* Parameter(s): patient+status
  * Conformance: **SHALL**
  * Type(s): `reference`+`token`
  * Requirements (when used alone or in combination): 
* Parameter(s): patient+effective
  * Conformance: **SHOULD**
  * Type(s): `reference`+`date`
  * Requirements (when used alone or in combination): 
* Parameter(s): _id
  * Conformance: **SHOULD**
  * Type(s): `token`
  * Requirements (when used alone or in combination): 
* Parameter(s): effective
  * Conformance: **MAY**
  * Type(s): `date`
  * Requirements (when used alone or in combination): A requester**SHALL**provide a value precise to the second + time offset. A responder**SHALL**support a value precise to the second + time offset.The requester**SHALL**support these search comparators`gt`,`lt`,`ge`,`le`. The responder**SHALL**support these search comparators`gt`,`lt`,`ge`,`le`.The requester**SHOULD**support`multipleAnd`, and if`multipleAnd`is supported,**SHALL**support the search comparators`gt`,`lt`,`ge`,`le`. The responder**SHOULD**support`multipleAnd`, and if`multipleAnd`is supported,**SHALL**support the search comparators`gt`,`lt`,`ge`,`le`.
* Parameter(s): status
  * Conformance: **MAY**
  * Type(s): `token`
  * Requirements (when used alone or in combination): The requester**SHALL**provide at least a code value and**MAY**provide both the system and code values. The responder**SHALL**support both.The requester**SHALL**support`multipleOr`. The responder**SHALL**support`multipleOr`.

#### Mandatory Search Parameters

The following search parameters and search parameter combinations **SHALL** be supported:

1. **SHALL**support searching using the**[`patient`](https://hl7.org/fhir/R4/medicationstatement.html#search)**search parameter:
* **SHOULD** support these **[`_include`](http://hl7.org/fhir/R4/search.html#include)** parameters: `MedicationStatement:medication`
* **SHOULD** support chained searching of patient canonical identifier `patient.identifier` (e.g. `patient.identifier=[system|][code]`)
`GET [base]/MedicationStatement?patient={Type/}[id]`or optionally`GET [base]/MedicationStatement?patient.identifier=[system|][code]`Example:
1. GET [base]/MedicationStatement?patient=5678
1. GET [base]/MedicationStatement?patient=5678&_include=MedicationStatement:medication
1. GET [base]/MedicationStatement?patient.identifier=http://ns.electronichealth.net.au/id/medicare-number|32788511952
1. GET [base]/MedicationStatement?patient.identifier=http://ns.electronichealth.net.au/id/hi/ihi/1.0|8003608833357361
**Implementation Notes:**Fetches a bundle of all MedicationStatement resources for the specified patient ([how to search by reference](http://hl7.org/fhir/R4/search.html#reference)and[how to search by token](http://hl7.org/fhir/R4/search.html#token))
1. **SHALL**support searching using the combination of the**[`patient`](https://hl7.org/fhir/R4/medicationstatement.html#search)**and**[`status`](https://hl7.org/fhir/R4/medicationstatement.html#search)**search parameters:
* **SHOULD** support these **[`_include`](http://hl7.org/fhir/R4/search.html#include)** parameters: `MedicationStatement:medication`
* **SHOULD** support chained searching of patient canonical identifier `patient.identifier` (e.g. `patient.identifier=[system|][code]`)
* **SHALL** support **[multipleOr](http://hl7.org/fhir/R4/searchparameter-definitions.html#SearchParameter.multipleOr)** search on `status` (e.g.`status={system|}[code],{system|}[code],...`)
`GET [base]/MedicationStatement?patient={Type/}[id]&status={system|}[code]{,{system|}[code],...}`Example:
1. GET [base]/MedicationStatement?patient=5678&status=active
1. GET [base]/MedicationStatement?patient=5678&status=active&_include=MedicationStatement:medication
**Implementation Notes:**Fetches a bundle of all MedicationStatement resources for the specified patient and status ([how to search by reference](http://hl7.org/fhir/R4/search.html#reference)and[how to search by token](http://hl7.org/fhir/R4/search.html#token))

#### Optional Search Parameters

The following search parameters and search parameter combinations **SHOULD** be supported:

1. **SHOULD**support searching using the**[`_id`](https://hl7.org/fhir/R4/medicationstatement.html#search)**search parameter:
* **SHOULD** support these **[`_include`](http://hl7.org/fhir/R4/search.html#include)** parameters: `MedicationStatement:medication`
`GET [base]/MedicationStatement?_id=[id]`Example:
1. GET [base]/MedicationStatement?_id=2169591
1. GET [base]/MedicationStatement?_id=2169591&_include=MedicationStatement:medication
**Implementation Notes:**Fetches a bundle with the requested MedicationStatement, instead of just the resource itself, and allows for the inclusion of additional search parameters such as _include, _revinclude, or _lastUpdated ([how to search by id of the resource](https://hl7.org/fhir/r4/search.html#id))
1. **SHOULD**support searching using the combination of the**[`patient`](https://hl7.org/fhir/R4/medicationstatement.html#search)**and**[`effective`](https://hl7.org/fhir/R4/medicationstatement.html#search)**search parameters:
* **SHOULD** support these **[`_include`](http://hl7.org/fhir/R4/search.html#include)** parameters: `MedicationStatement:medication`
* **SHOULD** support chained searching of patient canonical identifier `patient.identifier` (e.g. `patient.identifier=[system|][code]`)
* **SHALL** support these `effective` comparators: `gt,lt,ge,le`
* **SHOULD** support **[multipleAnd](http://hl7.org/fhir/R4/searchparameter-definitions.html#SearchParameter.multipleAnd)** search on `effective` (e.g.`effective=[date]&effective=[date]&...`)
`GET [base]/MedicationStatement?patient={Type/}[id]&effective={gt|lt|ge|le}[date]{&effective={gt|lt|ge|le}[date]&...}`Example:
1. GET [base]/MedicationStatement?patient=5678&effective=ge2020-01-01T00:00:00Z
1. GET [base]/MedicationStatement?patient.identifier=http://example.org/fhir/mrn|12345&effective=ge2020-01-01T00:00:00Z
1. GET [base]/MedicationStatement?patient.identifier=http://example.org/fhir/mrn|12345&effective=ge2020-01-01T00:00:00Z&_include=MedicationStatement:medication
**Implementation Notes:**Fetches a bundle of all MedicationStatement resources for the specified patient and date ([how to search by reference](http://hl7.org/fhir/R4/search.html#reference)and[how to search by date](http://hl7.org/fhir/R4/search.html#date))



## Resource Content

```json
{
  "resourceType" : "StructureDefinition",
  "id" : "au-core-medicationstatement",
  "extension" : [
    {
      "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger" : 2
    },
    {
      "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
      "valueCode" : "trial-use",
      "_valueCode" : {
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
            "valueCanonical" : "http://hl7.org.au/fhir/core/ImplementationGuide/hl7.fhir.au.core"
          }
        ]
      }
    }
  ],
  "url" : "http://hl7.org.au/fhir/core/StructureDefinition/au-core-medicationstatement",
  "version" : "2.0.0-preview",
  "name" : "AUCoreMedicationStatement",
  "title" : "AU Core MedicationStatement",
  "status" : "active",
  "date" : "2025-11-27T01:36:36+00:00",
  "publisher" : "HL7 Australia",
  "contact" : [
    {
      "name" : "HL7 Australia FHIR Work Group",
      "telecom" : [
        {
          "system" : "url",
          "value" : "https://confluence.hl7.org/display/HAFWG",
          "use" : "work"
        }
      ]
    }
  ],
  "description" : "This profile sets minimum expectations for a MedicationStatement resource to record, search, and fetch summary statements of medication use associated with a patient. It is based on the [AU Base MedicationStatement](http://build.fhir.org/ig/hl7au/au-fhir-base/StructureDefinition-au-medicationstatement.html) profile and identifies the *additional* mandatory core elements, extensions, vocabularies and value sets that **SHALL** be present in the MedicationStatement when conforming to this profile. It provides the floor for standards development for specific uses cases in an Australian context.",
  "jurisdiction" : [
    {
      "coding" : [
        {
          "system" : "urn:iso:std:iso:3166",
          "code" : "AU"
        }
      ]
    }
  ],
  "copyright" : "Used by permission of HL7 International, all rights reserved Creative Commons License. HL7 Australia© 2022+; Licensed Under Creative Commons No Rights Reserved.",
  "fhirVersion" : "4.0.1",
  "mapping" : [
    {
      "identity" : "workflow",
      "uri" : "http://hl7.org/fhir/workflow",
      "name" : "Workflow Pattern"
    },
    {
      "identity" : "rim",
      "uri" : "http://hl7.org/v3",
      "name" : "RIM Mapping"
    },
    {
      "identity" : "w5",
      "uri" : "http://hl7.org/fhir/fivews",
      "name" : "FiveWs Pattern Mapping"
    },
    {
      "identity" : "v2",
      "uri" : "http://hl7.org/v2",
      "name" : "HL7 v2 Mapping"
    }
  ],
  "kind" : "resource",
  "abstract" : false,
  "type" : "MedicationStatement",
  "baseDefinition" : "http://hl7.org.au/fhir/StructureDefinition/au-medicationstatement",
  "derivation" : "constraint",
  "differential" : {
    "element" : [
      {
        "id" : "MedicationStatement",
        "path" : "MedicationStatement"
      },
      {
        "id" : "MedicationStatement.status",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.status",
        "mustSupport" : true
      },
      {
        "id" : "MedicationStatement.medication[x]",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.medication[x]",
        "slicing" : {
          "discriminator" : [
            {
              "type" : "type",
              "path" : "$this"
            }
          ],
          "rules" : "closed"
        },
        "mustSupport" : true
      },
      {
        "id" : "MedicationStatement.medication[x]:medicationCodeableConcept",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.medication[x]",
        "sliceName" : "medicationCodeableConcept",
        "type" : [
          {
            "code" : "CodeableConcept"
          }
        ],
        "mustSupport" : true
      },
      {
        "id" : "MedicationStatement.medication[x]:medicationCodeableConcept.coding",
        "path" : "MedicationStatement.medication[x].coding",
        "slicing" : {
          "discriminator" : [
            {
              "type" : "pattern",
              "path" : "$this"
            }
          ],
          "rules" : "open"
        }
      },
      {
        "id" : "MedicationStatement.medication[x]:medicationCodeableConcept.coding:pbs",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.medication[x].coding",
        "sliceName" : "pbs",
        "mustSupport" : true,
        "binding" : {
          "strength" : "required",
          "valueSet" : "http://terminology.hl7.org.au/ValueSet/pbs-item"
        }
      },
      {
        "id" : "MedicationStatement.medication[x]:medicationCodeableConcept.coding:amt",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.medication[x].coding",
        "sliceName" : "amt",
        "mustSupport" : true,
        "binding" : {
          "strength" : "required",
          "valueSet" : "https://healthterminologies.gov.au/fhir/ValueSet/australian-medication-1"
        }
      },
      {
        "id" : "MedicationStatement.medication[x]:medicationReference",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.medication[x]",
        "sliceName" : "medicationReference",
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : [
              "http://hl7.org.au/fhir/core/StructureDefinition/au-core-medication"
            ]
          }
        ],
        "mustSupport" : true
      },
      {
        "id" : "MedicationStatement.subject",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.subject",
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : [
              "http://hl7.org.au/fhir/core/StructureDefinition/au-core-patient"
            ]
          }
        ],
        "mustSupport" : true
      },
      {
        "id" : "MedicationStatement.effective[x]",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.effective[x]",
        "mustSupport" : true
      },
      {
        "id" : "MedicationStatement.dateAsserted",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.dateAsserted",
        "mustSupport" : true
      },
      {
        "id" : "MedicationStatement.reasonCode",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.reasonCode",
        "mustSupport" : true
      },
      {
        "id" : "MedicationStatement.reasonReference",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.reasonReference",
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : [
              "http://hl7.org.au/fhir/core/StructureDefinition/au-core-condition",
              "http://hl7.org/fhir/StructureDefinition/Observation",
              "http://hl7.org.au/fhir/StructureDefinition/au-diagnosticreport"
            ]
          }
        ],
        "mustSupport" : true
      },
      {
        "id" : "MedicationStatement.dosage",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.dosage",
        "mustSupport" : true
      },
      {
        "id" : "MedicationStatement.dosage.text",
        "extension" : [
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:populate-if-known"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-responder"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension" : [
              {
                "url" : "code",
                "valueCode" : "SHALL:no-error"
              },
              {
                "url" : "actor",
                "valueCanonical" : "http://hl7.org.au/fhir/core/ActorDefinition/au-core-actor-requester"
              }
            ],
            "url" : "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path" : "MedicationStatement.dosage.text",
        "mustSupport" : true
      }
    ]
  }
}

```
