Usage scenarios

The following are supported usage scenarios for this profile:

• Query for observations of blood pressure associated with a patient
• Record or update an observation of blood pressure associated with a patient

Comparison with other national and international specifications

A resource conforming to this profile is conformant to:

• observation-bp
  • and therefore conformant to International Patient Summary
• IPA-Observation
• US Core Blood Pressure

Conformance in reverse is not guaranteed, i.e. a resource conforming to International Patient Access, International Patient Summary, or US Core MAY NOT conform to AU Core.

Profile specific implementation guidance

• Observation.category provides an efficient way of supporting system interactions, e.g. restricting searches. Implementers need to understand that data categorisation is somewhat subjective. The categorisation applied by the source may not align with a receiver’s expectations.
• Observations MAY have additional codes that translate or map to the Observation code or category codes. For example:
  • providing a local code
  • providing a more specific codes such as 8306-3 - Body height - lying in addition to 8302-2 - Body height. Several additional observation codes are provided in the FHIR core specification vital signs table.

• Observations MAY have [component] observations to qualify the vital sign observation. For example, 8478-0 - Mean blood pressure, 8887-2 - Heart rate device type, 8326-1 - Type of body temperature device. Several of these are provided in the FHIR core specification vital signs table.

• Because blood pressure values are communicated in the mandatory systolic and diastolic components:
  • Observation.value[x] element SHOULD be omitted
  • an Observation without a systolic or diastolic result value, SHOULD include a reason why the data is absent in Observation.component.dataAbsentReason

Feedback is requested on the proposal to remove Must Support from Observation.performer element across AU Core Vital Signs profiles. Please comment on HL7 Jira FHIR-44786.

• Differential Table
• Key Elements Table
• Snapshot Table
• Statistics/References
• All

This structure is derived from observation-bp

Name	Flags	Card.	Type	Description & Constraints
Observation		0..*	observation-bp	Blood pressure
status		1..1	code	registered | preliminary | final | amended + Fixed Value: final
code
coding		2..*	Coding	Code defined by a terminology system
coding:snomedBPCode		1..1	Coding	SNOMED CT Blood Pressure
system		1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 75367002
subject		1..1	Reference(AU Core Patient)	Who and/or what the observation is about
encounter	S	0..1	Reference(AU Core Encounter)	Healthcare event during which this observation is made
effective[x]	C	1..1	dateTime	Date, and optionally time, the observation was performed au-core-obs-01: Date shall be at least to day
performer	S	0..*	Reference(AU Core Practitioner | AU Core PractitionerRole | AU Core Organization | AU Core Patient | RelatedPerson)	Who is responsible for the observation
dataAbsentReason		0..1	CodeableConcept	Why the result is missing
bodySite	C	0..1	CodeableConcept	Observed body part Binding: Body Site (extensible) au-core-obs-04: If a coded body site is provided, at least one code shall be from SNOMED CT
component:SystolicBP		1..1	BackboneElement	Systolic Blood Pressure
code
coding:snomedSBP		1..1	Coding	SNOMED CT Systolic Blood Pressure
system		1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 271649006
dataAbsentReason	S	0..1	CodeableConcept	Why the component result is missing
component:DiastolicBP		1..1	BackboneElement	Diastolic Blood Pressure
code
coding:snomedDBP		1..1	Coding	SNOMED CT Diastolic Blood Pressure
system		1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 271650006
dataAbsentReason	S	0..1	CodeableConcept	Why the component result is missing
Documentation for this format

Terminology Bindings (Differential)

Path	Conformance	ValueSet	URI
Observation.bodySite	extensible	BodySite https://healthterminologies.gov.au/fhir/ValueSet/body-site-1 from https://tx.ontoserver.csiro.au/fhir

Constraints

Id	Grade	Path(s)	Details	Requirements
au-core-obs-01	error	Observation.effective[x]	Date shall be at least to day : $this is DateTime implies $this.toString().length() >= 10
au-core-obs-04	error	Observation.bodySite	If a coded body site is provided, at least one code shall be from SNOMED CT : coding.exists() implies coding.where(system='http://snomed.info/sct').exists()

Name	Flags	Card.	Type	Description & Constraints
Observation	C	0..*	observation-bp	Blood pressure obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present vs-2: If there is no component or hasMember element then either a value[x] or a data absent reason must be present.
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
status	?!SΣ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatus (required) Fixed Value: final
Slices for category	S	1..*	CodeableConcept	Classification of type of observation Slice: Unordered, Open by value:coding.code, value:coding.system Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
category:VSCat	S	1..1	CodeableConcept	Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
coding	SΣ	1..*	Coding	Code defined by a terminology system
system	SΣ	1..1	uri	Identity of the terminology system Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
code	SΣ	1..1	code	Symbol in syntax defined by the system Fixed Value: vital-signs
code	SΣ	1..1	CodeableConcept	Blood Pressure Binding: VitalSigns (extensible): This identifies the vital sign result type.
Slices for coding	Σ	2..*	Coding	Code defined by a terminology system Slice: Unordered, Open by value:code, value:system
coding:BPCode	Σ	1..1	Coding	Code defined by a terminology system
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 85354-9
coding:snomedBPCode	Σ	1..1	Coding	SNOMED CT Blood Pressure
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 75367002
subject	SΣ	1..1	Reference(AU Core Patient)	Who and/or what the observation is about
encounter	SΣ	0..1	Reference(AU Core Encounter)	Healthcare event during which this observation is made
effective[x]	SΣC	1..1	dateTime	Date, and optionally time, the observation was performed vs-1: if Observation.effective[x] is dateTime and has a value then that value shall be precise to the day au-core-obs-01: Date shall be at least to day
performer	SΣ	0..*	Reference(AU Core Practitioner | AU Core PractitionerRole | AU Core Organization | AU Core Patient | RelatedPerson)	Who is responsible for the observation
Slices for value[x]	SΣC	0..1	Quantity	Vital Signs value are recorded using the Quantity data type. For supporting observations such as Cuff size could use other datatypes such as CodeableConcept. Slice: Unordered, Closed by type:$this
dataAbsentReason	SC	0..1	CodeableConcept	Why the result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
bodySite	C	0..1	CodeableConcept	Observed body part Binding: Body Site (extensible) au-core-obs-04: If a coded body site is provided, at least one code shall be from SNOMED CT
Slices for component	SΣC	2..*	BackboneElement	Used when reporting systolic and diastolic blood pressure. Slice: Unordered, Open by value:code.coding.code, value:code.coding.system vs-3: If there is no a value a data absent reason must be present
component:All Slices				Content/Rules for all slices
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	SΣ	1..1	CodeableConcept	Type of component observation (code / type) Binding: VitalSigns (extensible): This identifies the vital sign result type.
value[x]	SΣC	0..1		Vital Sign Value recorded with UCUM Binding: VitalSignsUnits (required): Common UCUM units for recording Vital Signs.
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
dataAbsentReason	SC	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
component:SystolicBP	SΣC	1..1	BackboneElement	Systolic Blood Pressure vs-3: If there is no a value a data absent reason must be present
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	SΣ	1..1	CodeableConcept	Type of component observation (code / type) Binding: VitalSigns (extensible): This identifies the vital sign result type.
Slices for coding	Σ	2..*	Coding	Systolic Blood Pressure Slice: Unordered, Open by value:code, value:system
coding:SBPCode	Σ	1..1	Coding	Systolic Blood Pressure
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 8480-6
coding:snomedSBP	Σ	1..1	Coding	SNOMED CT Systolic Blood Pressure
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 271649006
value[x]	SΣC	0..1	Quantity	Vital Sign Value recorded with UCUM Binding: VitalSignsUnits (required): Common UCUM units for recording Vital Signs.
value	SΣ	1..1	decimal	Numerical value (with implicit precision)
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	SΣ	1..1	string	Unit representation
system	SΣC	1..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org
code	SΣ	1..1	code	Coded responses from the common UCUM units for vital signs value set. Fixed Value: mm[Hg]
dataAbsentReason	SC	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
component:DiastolicBP	SΣC	1..1	BackboneElement	Diastolic Blood Pressure vs-3: If there is no a value a data absent reason must be present
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	SΣ	1..1	CodeableConcept	Type of component observation (code / type) Binding: VitalSigns (extensible): This identifies the vital sign result type.
Slices for coding	Σ	2..*	Coding	Diastolic Blood Pressure Slice: Unordered, Open by value:code, value:system
coding:DBPCode	Σ	1..1	Coding	Diastolic Blood Pressure
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 8462-4
coding:snomedDBP	Σ	1..1	Coding	SNOMED CT Diastolic Blood Pressure
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 271650006
value[x]	SΣC	0..1	Quantity	Vital Sign Value recorded with UCUM Binding: VitalSignsUnits (required): Common UCUM units for recording Vital Signs.
value	SΣ	1..1	decimal	Numerical value (with implicit precision)
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	SΣ	1..1	string	Unit representation
system	SΣC	1..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org
code	SΣ	1..1	code	Coded responses from the common UCUM units for vital signs value set. Fixed Value: mm[Hg]
dataAbsentReason	SC	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Observation.status	required	Fixed Value: final http://hl7.org/fhir/ValueSet/observation-status|4.0.1 from the FHIR Standard
Observation.category	preferred	ObservationCategoryCodes http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.category:VSCat	preferred	ObservationCategoryCodes http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.bodySite	extensible	BodySite https://healthterminologies.gov.au/fhir/ValueSet/body-site-1 from https://tx.ontoserver.csiro.au/fhir
Observation.component.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.component.value[x]	required	VitalSignsUnits http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1 from the FHIR Standard
Observation.component.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.component:SystolicBP.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.component:SystolicBP.value[x]	required	VitalSignsUnits http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1 from the FHIR Standard
Observation.component:SystolicBP.value[x].comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 from the FHIR Standard
Observation.component:SystolicBP.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.component:DiastolicBP.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.component:DiastolicBP.value[x]	required	VitalSignsUnits http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1 from the FHIR Standard
Observation.component:DiastolicBP.value[x].comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 from the FHIR Standard
Observation.component:DiastolicBP.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
au-core-obs-01	error	Observation.effective[x]	Date shall be at least to day : $this is DateTime implies $this.toString().length() >= 10
au-core-obs-04	error	Observation.bodySite	If a coded body site is provided, at least one code shall be from SNOMED CT : coding.exists() implies coding.where(system='http://snomed.info/sct').exists()
dom-2	error	Observation	If the resource is contained in another resource, it SHALL NOT contain nested Resources : contained.contained.empty()
dom-3	error	Observation	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	error	Observation	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	error	Observation	If a resource is contained in another resource, it SHALL NOT have a security label : contained.meta.security.empty()
dom-6	best practice	Observation	A resource should have narrative for robust management : text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()
obs-6	error	Observation	dataAbsentReason SHALL only be present if Observation.value[x] is not present : dataAbsentReason.empty() or value.empty()
obs-7	error	Observation	If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present : value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()
vs-1	error	Observation.effective[x]	if Observation.effective[x] is dateTime and has a value then that value shall be precise to the day : $this is dateTime implies $this.toString().length() >= 10
vs-2	error	Observation	If there is no component or hasMember element then either a value[x] or a data absent reason must be present. : (component.empty() and hasMember.empty()) implies (dataAbsentReason.exists() or value.exists())
vs-3	error	Observation.component, Observation.component:SystolicBP, Observation.component:DiastolicBP	If there is no a value a data absent reason must be present : value.exists() or dataAbsentReason.exists()

Name	Flags	Card.	Type	Description & Constraints
Observation	C	0..*	observation-bp	Blood pressure obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present vs-2: If there is no component or hasMember element then either a value[x] or a data absent reason must be present.
id	Σ	0..1	id	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding
text		0..1	Narrative	Text summary of the resource, for human interpretation
contained		0..*	Resource	Contained, inline Resources
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier	Σ	0..*	Identifier	Business Identifier for observation
basedOn	Σ	0..*	Reference(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest)	Fulfills plan, proposal or order
partOf	Σ	0..*	Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy)	Part of referenced event
status	?!SΣ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatus (required) Fixed Value: final
Slices for category	S	1..*	CodeableConcept	Classification of type of observation Slice: Unordered, Open by value:coding.code, value:coding.system Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
category:VSCat	S	1..1	CodeableConcept	Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
coding	SΣ	1..*	Coding	Code defined by a terminology system
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	SΣ	1..1	uri	Identity of the terminology system Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
version	Σ	0..1	string	Version of the system - if relevant
code	SΣ	1..1	code	Symbol in syntax defined by the system Fixed Value: vital-signs
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
code	SΣ	1..1	CodeableConcept	Blood Pressure Binding: VitalSigns (extensible): This identifies the vital sign result type.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	2..*	Coding	Code defined by a terminology system Slice: Unordered, Open by value:code, value:system
coding:BPCode	Σ	1..1	Coding	Code defined by a terminology system
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 85354-9
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
coding:snomedBPCode	Σ	1..1	Coding	SNOMED CT Blood Pressure
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 75367002
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
subject	SΣ	1..1	Reference(AU Core Patient)	Who and/or what the observation is about
focus	Σ	0..*	Reference(Resource)	What the observation is about, when it is not about the subject of record
encounter	SΣ	0..1	Reference(AU Core Encounter)	Healthcare event during which this observation is made
effective[x]	SΣC	1..1	dateTime	Date, and optionally time, the observation was performed vs-1: if Observation.effective[x] is dateTime and has a value then that value shall be precise to the day au-core-obs-01: Date shall be at least to day
issued	Σ	0..1	instant	Date/Time this version was made available
performer	SΣ	0..*	Reference(AU Core Practitioner | AU Core PractitionerRole | AU Core Organization | AU Core Patient | RelatedPerson)	Who is responsible for the observation
Slices for value[x]	SΣC	0..1	Quantity	Vital Signs value are recorded using the Quantity data type. For supporting observations such as Cuff size could use other datatypes such as CodeableConcept. Slice: Unordered, Closed by type:$this
dataAbsentReason	SC	0..1	CodeableConcept	Why the result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
interpretation		0..*	CodeableConcept	High, low, normal, etc. Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.
note		0..*	Annotation	Comments about the observation
bodySite	C	0..1	CodeableConcept	Observed body part Binding: Body Site (extensible) au-core-obs-04: If a coded body site is provided, at least one code shall be from SNOMED CT
method		0..1	CodeableConcept	How it was done Binding: ObservationMethods (example): Methods for simple observations.
specimen		0..1	Reference(Specimen)	Specimen used for this observation
device		0..1	Reference(Device | DeviceMetric)	(Measurement) Device
referenceRange	C	0..*	BackboneElement	Provides guide for interpretation obs-3: Must have at least a low or a high or text
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
low	C	0..1	SimpleQuantity	Low Range, if relevant
high	C	0..1	SimpleQuantity	High Range, if relevant
type		0..1	CodeableConcept	Reference range qualifier Binding: ObservationReferenceRangeMeaningCodes (preferred): Code for the meaning of a reference range.
appliesTo		0..*	CodeableConcept	Reference range population Binding: ObservationReferenceRangeAppliesToCodes (example): Codes identifying the population the reference range applies to.
age		0..1	Range	Applicable age range, if relevant
text		0..1	string	Text based reference range in an observation
hasMember	Σ	0..*	Reference(QuestionnaireResponse | MolecularSequence | Vital Signs Profile)	Used when reporting vital signs panel components
derivedFrom	Σ	0..*	Reference(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | MolecularSequence | Vital Signs Profile)	Related measurements the observation is made from
Slices for component	SΣC	2..*	BackboneElement	Used when reporting systolic and diastolic blood pressure. Slice: Unordered, Open by value:code.coding.code, value:code.coding.system vs-3: If there is no a value a data absent reason must be present
component:All Slices				Content/Rules for all slices
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	SΣ	1..1	CodeableConcept	Type of component observation (code / type) Binding: VitalSigns (extensible): This identifies the vital sign result type.
value[x]	SΣC	0..1		Vital Sign Value recorded with UCUM Binding: VitalSignsUnits (required): Common UCUM units for recording Vital Signs.
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
dataAbsentReason	SC	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
interpretation		0..*	CodeableConcept	High, low, normal, etc. Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.
referenceRange		0..*	See referenceRange (Observation)	Provides guide for interpretation of component result
component:SystolicBP	SΣC	1..1	BackboneElement	Systolic Blood Pressure vs-3: If there is no a value a data absent reason must be present
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	SΣ	1..1	CodeableConcept	Type of component observation (code / type) Binding: VitalSigns (extensible): This identifies the vital sign result type.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	2..*	Coding	Systolic Blood Pressure Slice: Unordered, Open by value:code, value:system
coding:SBPCode	Σ	1..1	Coding	Systolic Blood Pressure
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 8480-6
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
coding:snomedSBP	Σ	1..1	Coding	SNOMED CT Systolic Blood Pressure
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 271649006
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
value[x]	SΣC	0..1	Quantity	Vital Sign Value recorded with UCUM Binding: VitalSignsUnits (required): Common UCUM units for recording Vital Signs.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
value	SΣ	1..1	decimal	Numerical value (with implicit precision)
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	SΣ	1..1	string	Unit representation
system	SΣC	1..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org
code	SΣ	1..1	code	Coded responses from the common UCUM units for vital signs value set. Fixed Value: mm[Hg]
dataAbsentReason	SC	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
interpretation		0..*	CodeableConcept	High, low, normal, etc. Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.
referenceRange		0..*	See referenceRange (Observation)	Provides guide for interpretation of component result
component:DiastolicBP	SΣC	1..1	BackboneElement	Diastolic Blood Pressure vs-3: If there is no a value a data absent reason must be present
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	SΣ	1..1	CodeableConcept	Type of component observation (code / type) Binding: VitalSigns (extensible): This identifies the vital sign result type.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	2..*	Coding	Diastolic Blood Pressure Slice: Unordered, Open by value:code, value:system
coding:DBPCode	Σ	1..1	Coding	Diastolic Blood Pressure
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 8462-4
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
coding:snomedDBP	Σ	1..1	Coding	SNOMED CT Diastolic Blood Pressure
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 271650006
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
value[x]	SΣC	0..1	Quantity	Vital Sign Value recorded with UCUM Binding: VitalSignsUnits (required): Common UCUM units for recording Vital Signs.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
value	SΣ	1..1	decimal	Numerical value (with implicit precision)
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	SΣ	1..1	string	Unit representation
system	SΣC	1..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org
code	SΣ	1..1	code	Coded responses from the common UCUM units for vital signs value set. Fixed Value: mm[Hg]
dataAbsentReason	SC	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
interpretation		0..*	CodeableConcept	High, low, normal, etc. Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.
referenceRange		0..*	See referenceRange (Observation)	Provides guide for interpretation of component result
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Observation.language	preferred	CommonLanguages Additional Bindings Purpose AllLanguages Max Binding http://hl7.org/fhir/ValueSet/languages from the FHIR Standard
Observation.status	required	Fixed Value: final http://hl7.org/fhir/ValueSet/observation-status|4.0.1 from the FHIR Standard
Observation.category	preferred	ObservationCategoryCodes http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.category:VSCat	preferred	ObservationCategoryCodes http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.interpretation	extensible	ObservationInterpretationCodes http://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard
Observation.bodySite	extensible	BodySite https://healthterminologies.gov.au/fhir/ValueSet/body-site-1 from https://tx.ontoserver.csiro.au/fhir
Observation.method	example	ObservationMethods http://hl7.org/fhir/ValueSet/observation-methods from the FHIR Standard
Observation.referenceRange.type	preferred	ObservationReferenceRangeMeaningCodes http://hl7.org/fhir/ValueSet/referencerange-meaning from the FHIR Standard
Observation.referenceRange.appliesTo	example	ObservationReferenceRangeAppliesToCodes http://hl7.org/fhir/ValueSet/referencerange-appliesto from the FHIR Standard
Observation.component.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.component.value[x]	required	VitalSignsUnits http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1 from the FHIR Standard
Observation.component.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.component.interpretation	extensible	ObservationInterpretationCodes http://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard
Observation.component:SystolicBP.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.component:SystolicBP.value[x]	required	VitalSignsUnits http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1 from the FHIR Standard
Observation.component:SystolicBP.value[x].comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 from the FHIR Standard
Observation.component:SystolicBP.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.component:SystolicBP.interpretation	extensible	ObservationInterpretationCodes http://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard
Observation.component:DiastolicBP.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.component:DiastolicBP.value[x]	required	VitalSignsUnits http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1 from the FHIR Standard
Observation.component:DiastolicBP.value[x].comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 from the FHIR Standard
Observation.component:DiastolicBP.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.component:DiastolicBP.interpretation	extensible	ObservationInterpretationCodes http://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
au-core-obs-01	error	Observation.effective[x]	Date shall be at least to day : $this is DateTime implies $this.toString().length() >= 10
au-core-obs-04	error	Observation.bodySite	If a coded body site is provided, at least one code shall be from SNOMED CT : coding.exists() implies coding.where(system='http://snomed.info/sct').exists()
dom-2	error	Observation	If the resource is contained in another resource, it SHALL NOT contain nested Resources : contained.contained.empty()
dom-3	error	Observation	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	error	Observation	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	error	Observation	If a resource is contained in another resource, it SHALL NOT have a security label : contained.meta.security.empty()
dom-6	best practice	Observation	A resource should have narrative for robust management : text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()
obs-3	error	Observation.referenceRange	Must have at least a low or a high or text : low.exists() or high.exists() or text.exists()
obs-6	error	Observation	dataAbsentReason SHALL only be present if Observation.value[x] is not present : dataAbsentReason.empty() or value.empty()
obs-7	error	Observation	If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present : value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()
vs-1	error	Observation.effective[x]	if Observation.effective[x] is dateTime and has a value then that value shall be precise to the day : $this is dateTime implies $this.toString().length() >= 10
vs-2	error	Observation	If there is no component or hasMember element then either a value[x] or a data absent reason must be present. : (component.empty() and hasMember.empty()) implies (dataAbsentReason.exists() or value.exists())
vs-3	error	Observation.component, Observation.component:SystolicBP, Observation.component:DiastolicBP	If there is no a value a data absent reason must be present : value.exists() or dataAbsentReason.exists()

Differential View

This structure is derived from observation-bp

Name	Flags	Card.	Type	Description & Constraints
Observation		0..*	observation-bp	Blood pressure
status		1..1	code	registered | preliminary | final | amended + Fixed Value: final
code
coding		2..*	Coding	Code defined by a terminology system
coding:snomedBPCode		1..1	Coding	SNOMED CT Blood Pressure
system		1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 75367002
subject		1..1	Reference(AU Core Patient)	Who and/or what the observation is about
encounter	S	0..1	Reference(AU Core Encounter)	Healthcare event during which this observation is made
effective[x]	C	1..1	dateTime	Date, and optionally time, the observation was performed au-core-obs-01: Date shall be at least to day
performer	S	0..*	Reference(AU Core Practitioner | AU Core PractitionerRole | AU Core Organization | AU Core Patient | RelatedPerson)	Who is responsible for the observation
dataAbsentReason		0..1	CodeableConcept	Why the result is missing
bodySite	C	0..1	CodeableConcept	Observed body part Binding: Body Site (extensible) au-core-obs-04: If a coded body site is provided, at least one code shall be from SNOMED CT
component:SystolicBP		1..1	BackboneElement	Systolic Blood Pressure
code
coding:snomedSBP		1..1	Coding	SNOMED CT Systolic Blood Pressure
system		1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 271649006
dataAbsentReason	S	0..1	CodeableConcept	Why the component result is missing
component:DiastolicBP		1..1	BackboneElement	Diastolic Blood Pressure
code
coding:snomedDBP		1..1	Coding	SNOMED CT Diastolic Blood Pressure
system		1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 271650006
dataAbsentReason	S	0..1	CodeableConcept	Why the component result is missing
Documentation for this format

Terminology Bindings (Differential)

Path	Conformance	ValueSet	URI
Observation.bodySite	extensible	BodySite https://healthterminologies.gov.au/fhir/ValueSet/body-site-1 from https://tx.ontoserver.csiro.au/fhir

Constraints

Id	Grade	Path(s)	Details	Requirements
au-core-obs-01	error	Observation.effective[x]	Date shall be at least to day : $this is DateTime implies $this.toString().length() >= 10
au-core-obs-04	error	Observation.bodySite	If a coded body site is provided, at least one code shall be from SNOMED CT : coding.exists() implies coding.where(system='http://snomed.info/sct').exists()

Key Elements View

Name	Flags	Card.	Type	Description & Constraints
Observation	C	0..*	observation-bp	Blood pressure obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present vs-2: If there is no component or hasMember element then either a value[x] or a data absent reason must be present.
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
status	?!SΣ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatus (required) Fixed Value: final
Slices for category	S	1..*	CodeableConcept	Classification of type of observation Slice: Unordered, Open by value:coding.code, value:coding.system Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
category:VSCat	S	1..1	CodeableConcept	Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
coding	SΣ	1..*	Coding	Code defined by a terminology system
system	SΣ	1..1	uri	Identity of the terminology system Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
code	SΣ	1..1	code	Symbol in syntax defined by the system Fixed Value: vital-signs
code	SΣ	1..1	CodeableConcept	Blood Pressure Binding: VitalSigns (extensible): This identifies the vital sign result type.
Slices for coding	Σ	2..*	Coding	Code defined by a terminology system Slice: Unordered, Open by value:code, value:system
coding:BPCode	Σ	1..1	Coding	Code defined by a terminology system
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 85354-9
coding:snomedBPCode	Σ	1..1	Coding	SNOMED CT Blood Pressure
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 75367002
subject	SΣ	1..1	Reference(AU Core Patient)	Who and/or what the observation is about
encounter	SΣ	0..1	Reference(AU Core Encounter)	Healthcare event during which this observation is made
effective[x]	SΣC	1..1	dateTime	Date, and optionally time, the observation was performed vs-1: if Observation.effective[x] is dateTime and has a value then that value shall be precise to the day au-core-obs-01: Date shall be at least to day
performer	SΣ	0..*	Reference(AU Core Practitioner | AU Core PractitionerRole | AU Core Organization | AU Core Patient | RelatedPerson)	Who is responsible for the observation
Slices for value[x]	SΣC	0..1	Quantity	Vital Signs value are recorded using the Quantity data type. For supporting observations such as Cuff size could use other datatypes such as CodeableConcept. Slice: Unordered, Closed by type:$this
dataAbsentReason	SC	0..1	CodeableConcept	Why the result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
bodySite	C	0..1	CodeableConcept	Observed body part Binding: Body Site (extensible) au-core-obs-04: If a coded body site is provided, at least one code shall be from SNOMED CT
Slices for component	SΣC	2..*	BackboneElement	Used when reporting systolic and diastolic blood pressure. Slice: Unordered, Open by value:code.coding.code, value:code.coding.system vs-3: If there is no a value a data absent reason must be present
component:All Slices				Content/Rules for all slices
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	SΣ	1..1	CodeableConcept	Type of component observation (code / type) Binding: VitalSigns (extensible): This identifies the vital sign result type.
value[x]	SΣC	0..1		Vital Sign Value recorded with UCUM Binding: VitalSignsUnits (required): Common UCUM units for recording Vital Signs.
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
dataAbsentReason	SC	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
component:SystolicBP	SΣC	1..1	BackboneElement	Systolic Blood Pressure vs-3: If there is no a value a data absent reason must be present
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	SΣ	1..1	CodeableConcept	Type of component observation (code / type) Binding: VitalSigns (extensible): This identifies the vital sign result type.
Slices for coding	Σ	2..*	Coding	Systolic Blood Pressure Slice: Unordered, Open by value:code, value:system
coding:SBPCode	Σ	1..1	Coding	Systolic Blood Pressure
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 8480-6
coding:snomedSBP	Σ	1..1	Coding	SNOMED CT Systolic Blood Pressure
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 271649006
value[x]	SΣC	0..1	Quantity	Vital Sign Value recorded with UCUM Binding: VitalSignsUnits (required): Common UCUM units for recording Vital Signs.
value	SΣ	1..1	decimal	Numerical value (with implicit precision)
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	SΣ	1..1	string	Unit representation
system	SΣC	1..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org
code	SΣ	1..1	code	Coded responses from the common UCUM units for vital signs value set. Fixed Value: mm[Hg]
dataAbsentReason	SC	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
component:DiastolicBP	SΣC	1..1	BackboneElement	Diastolic Blood Pressure vs-3: If there is no a value a data absent reason must be present
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	SΣ	1..1	CodeableConcept	Type of component observation (code / type) Binding: VitalSigns (extensible): This identifies the vital sign result type.
Slices for coding	Σ	2..*	Coding	Diastolic Blood Pressure Slice: Unordered, Open by value:code, value:system
coding:DBPCode	Σ	1..1	Coding	Diastolic Blood Pressure
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 8462-4
coding:snomedDBP	Σ	1..1	Coding	SNOMED CT Diastolic Blood Pressure
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 271650006
value[x]	SΣC	0..1	Quantity	Vital Sign Value recorded with UCUM Binding: VitalSignsUnits (required): Common UCUM units for recording Vital Signs.
value	SΣ	1..1	decimal	Numerical value (with implicit precision)
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	SΣ	1..1	string	Unit representation
system	SΣC	1..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org
code	SΣ	1..1	code	Coded responses from the common UCUM units for vital signs value set. Fixed Value: mm[Hg]
dataAbsentReason	SC	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Observation.status	required	Fixed Value: final http://hl7.org/fhir/ValueSet/observation-status|4.0.1 from the FHIR Standard
Observation.category	preferred	ObservationCategoryCodes http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.category:VSCat	preferred	ObservationCategoryCodes http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.bodySite	extensible	BodySite https://healthterminologies.gov.au/fhir/ValueSet/body-site-1 from https://tx.ontoserver.csiro.au/fhir
Observation.component.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.component.value[x]	required	VitalSignsUnits http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1 from the FHIR Standard
Observation.component.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.component:SystolicBP.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.component:SystolicBP.value[x]	required	VitalSignsUnits http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1 from the FHIR Standard
Observation.component:SystolicBP.value[x].comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 from the FHIR Standard
Observation.component:SystolicBP.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.component:DiastolicBP.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.component:DiastolicBP.value[x]	required	VitalSignsUnits http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1 from the FHIR Standard
Observation.component:DiastolicBP.value[x].comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 from the FHIR Standard
Observation.component:DiastolicBP.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
au-core-obs-01	error	Observation.effective[x]	Date shall be at least to day : $this is DateTime implies $this.toString().length() >= 10
au-core-obs-04	error	Observation.bodySite	If a coded body site is provided, at least one code shall be from SNOMED CT : coding.exists() implies coding.where(system='http://snomed.info/sct').exists()
dom-2	error	Observation	If the resource is contained in another resource, it SHALL NOT contain nested Resources : contained.contained.empty()
dom-3	error	Observation	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	error	Observation	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	error	Observation	If a resource is contained in another resource, it SHALL NOT have a security label : contained.meta.security.empty()
dom-6	best practice	Observation	A resource should have narrative for robust management : text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()
obs-6	error	Observation	dataAbsentReason SHALL only be present if Observation.value[x] is not present : dataAbsentReason.empty() or value.empty()
obs-7	error	Observation	If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present : value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()
vs-1	error	Observation.effective[x]	if Observation.effective[x] is dateTime and has a value then that value shall be precise to the day : $this is dateTime implies $this.toString().length() >= 10
vs-2	error	Observation	If there is no component or hasMember element then either a value[x] or a data absent reason must be present. : (component.empty() and hasMember.empty()) implies (dataAbsentReason.exists() or value.exists())
vs-3	error	Observation.component, Observation.component:SystolicBP, Observation.component:DiastolicBP	If there is no a value a data absent reason must be present : value.exists() or dataAbsentReason.exists()

Snapshot View

Name	Flags	Card.	Type	Description & Constraints
Observation	C	0..*	observation-bp	Blood pressure obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present vs-2: If there is no component or hasMember element then either a value[x] or a data absent reason must be present.
id	Σ	0..1	id	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding
text		0..1	Narrative	Text summary of the resource, for human interpretation
contained		0..*	Resource	Contained, inline Resources
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier	Σ	0..*	Identifier	Business Identifier for observation
basedOn	Σ	0..*	Reference(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest)	Fulfills plan, proposal or order
partOf	Σ	0..*	Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy)	Part of referenced event
status	?!SΣ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatus (required) Fixed Value: final
Slices for category	S	1..*	CodeableConcept	Classification of type of observation Slice: Unordered, Open by value:coding.code, value:coding.system Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
category:VSCat	S	1..1	CodeableConcept	Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
coding	SΣ	1..*	Coding	Code defined by a terminology system
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	SΣ	1..1	uri	Identity of the terminology system Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
version	Σ	0..1	string	Version of the system - if relevant
code	SΣ	1..1	code	Symbol in syntax defined by the system Fixed Value: vital-signs
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
code	SΣ	1..1	CodeableConcept	Blood Pressure Binding: VitalSigns (extensible): This identifies the vital sign result type.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	2..*	Coding	Code defined by a terminology system Slice: Unordered, Open by value:code, value:system
coding:BPCode	Σ	1..1	Coding	Code defined by a terminology system
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 85354-9
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
coding:snomedBPCode	Σ	1..1	Coding	SNOMED CT Blood Pressure
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 75367002
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
subject	SΣ	1..1	Reference(AU Core Patient)	Who and/or what the observation is about
focus	Σ	0..*	Reference(Resource)	What the observation is about, when it is not about the subject of record
encounter	SΣ	0..1	Reference(AU Core Encounter)	Healthcare event during which this observation is made
effective[x]	SΣC	1..1	dateTime	Date, and optionally time, the observation was performed vs-1: if Observation.effective[x] is dateTime and has a value then that value shall be precise to the day au-core-obs-01: Date shall be at least to day
issued	Σ	0..1	instant	Date/Time this version was made available
performer	SΣ	0..*	Reference(AU Core Practitioner | AU Core PractitionerRole | AU Core Organization | AU Core Patient | RelatedPerson)	Who is responsible for the observation
Slices for value[x]	SΣC	0..1	Quantity	Vital Signs value are recorded using the Quantity data type. For supporting observations such as Cuff size could use other datatypes such as CodeableConcept. Slice: Unordered, Closed by type:$this
dataAbsentReason	SC	0..1	CodeableConcept	Why the result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
interpretation		0..*	CodeableConcept	High, low, normal, etc. Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.
note		0..*	Annotation	Comments about the observation
bodySite	C	0..1	CodeableConcept	Observed body part Binding: Body Site (extensible) au-core-obs-04: If a coded body site is provided, at least one code shall be from SNOMED CT
method		0..1	CodeableConcept	How it was done Binding: ObservationMethods (example): Methods for simple observations.
specimen		0..1	Reference(Specimen)	Specimen used for this observation
device		0..1	Reference(Device | DeviceMetric)	(Measurement) Device
referenceRange	C	0..*	BackboneElement	Provides guide for interpretation obs-3: Must have at least a low or a high or text
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
low	C	0..1	SimpleQuantity	Low Range, if relevant
high	C	0..1	SimpleQuantity	High Range, if relevant
type		0..1	CodeableConcept	Reference range qualifier Binding: ObservationReferenceRangeMeaningCodes (preferred): Code for the meaning of a reference range.
appliesTo		0..*	CodeableConcept	Reference range population Binding: ObservationReferenceRangeAppliesToCodes (example): Codes identifying the population the reference range applies to.
age		0..1	Range	Applicable age range, if relevant
text		0..1	string	Text based reference range in an observation
hasMember	Σ	0..*	Reference(QuestionnaireResponse | MolecularSequence | Vital Signs Profile)	Used when reporting vital signs panel components
derivedFrom	Σ	0..*	Reference(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | MolecularSequence | Vital Signs Profile)	Related measurements the observation is made from
Slices for component	SΣC	2..*	BackboneElement	Used when reporting systolic and diastolic blood pressure. Slice: Unordered, Open by value:code.coding.code, value:code.coding.system vs-3: If there is no a value a data absent reason must be present
component:All Slices				Content/Rules for all slices
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	SΣ	1..1	CodeableConcept	Type of component observation (code / type) Binding: VitalSigns (extensible): This identifies the vital sign result type.
value[x]	SΣC	0..1		Vital Sign Value recorded with UCUM Binding: VitalSignsUnits (required): Common UCUM units for recording Vital Signs.
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
dataAbsentReason	SC	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
interpretation		0..*	CodeableConcept	High, low, normal, etc. Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.
referenceRange		0..*	See referenceRange (Observation)	Provides guide for interpretation of component result
component:SystolicBP	SΣC	1..1	BackboneElement	Systolic Blood Pressure vs-3: If there is no a value a data absent reason must be present
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	SΣ	1..1	CodeableConcept	Type of component observation (code / type) Binding: VitalSigns (extensible): This identifies the vital sign result type.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	2..*	Coding	Systolic Blood Pressure Slice: Unordered, Open by value:code, value:system
coding:SBPCode	Σ	1..1	Coding	Systolic Blood Pressure
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 8480-6
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
coding:snomedSBP	Σ	1..1	Coding	SNOMED CT Systolic Blood Pressure
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 271649006
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
value[x]	SΣC	0..1	Quantity	Vital Sign Value recorded with UCUM Binding: VitalSignsUnits (required): Common UCUM units for recording Vital Signs.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
value	SΣ	1..1	decimal	Numerical value (with implicit precision)
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	SΣ	1..1	string	Unit representation
system	SΣC	1..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org
code	SΣ	1..1	code	Coded responses from the common UCUM units for vital signs value set. Fixed Value: mm[Hg]
dataAbsentReason	SC	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
interpretation		0..*	CodeableConcept	High, low, normal, etc. Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.
referenceRange		0..*	See referenceRange (Observation)	Provides guide for interpretation of component result
component:DiastolicBP	SΣC	1..1	BackboneElement	Diastolic Blood Pressure vs-3: If there is no a value a data absent reason must be present
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	SΣ	1..1	CodeableConcept	Type of component observation (code / type) Binding: VitalSigns (extensible): This identifies the vital sign result type.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	2..*	Coding	Diastolic Blood Pressure Slice: Unordered, Open by value:code, value:system
coding:DBPCode	Σ	1..1	Coding	Diastolic Blood Pressure
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 8462-4
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
coding:snomedDBP	Σ	1..1	Coding	SNOMED CT Diastolic Blood Pressure
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 271650006
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
value[x]	SΣC	0..1	Quantity	Vital Sign Value recorded with UCUM Binding: VitalSignsUnits (required): Common UCUM units for recording Vital Signs.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
value	SΣ	1..1	decimal	Numerical value (with implicit precision)
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	SΣ	1..1	string	Unit representation
system	SΣC	1..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org
code	SΣ	1..1	code	Coded responses from the common UCUM units for vital signs value set. Fixed Value: mm[Hg]
dataAbsentReason	SC	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
interpretation		0..*	CodeableConcept	High, low, normal, etc. Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.
referenceRange		0..*	See referenceRange (Observation)	Provides guide for interpretation of component result
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Observation.language	preferred	CommonLanguages Additional Bindings Purpose AllLanguages Max Binding http://hl7.org/fhir/ValueSet/languages from the FHIR Standard
Observation.status	required	Fixed Value: final http://hl7.org/fhir/ValueSet/observation-status|4.0.1 from the FHIR Standard
Observation.category	preferred	ObservationCategoryCodes http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.category:VSCat	preferred	ObservationCategoryCodes http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.interpretation	extensible	ObservationInterpretationCodes http://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard
Observation.bodySite	extensible	BodySite https://healthterminologies.gov.au/fhir/ValueSet/body-site-1 from https://tx.ontoserver.csiro.au/fhir
Observation.method	example	ObservationMethods http://hl7.org/fhir/ValueSet/observation-methods from the FHIR Standard
Observation.referenceRange.type	preferred	ObservationReferenceRangeMeaningCodes http://hl7.org/fhir/ValueSet/referencerange-meaning from the FHIR Standard
Observation.referenceRange.appliesTo	example	ObservationReferenceRangeAppliesToCodes http://hl7.org/fhir/ValueSet/referencerange-appliesto from the FHIR Standard
Observation.component.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.component.value[x]	required	VitalSignsUnits http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1 from the FHIR Standard
Observation.component.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.component.interpretation	extensible	ObservationInterpretationCodes http://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard
Observation.component:SystolicBP.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.component:SystolicBP.value[x]	required	VitalSignsUnits http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1 from the FHIR Standard
Observation.component:SystolicBP.value[x].comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 from the FHIR Standard
Observation.component:SystolicBP.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.component:SystolicBP.interpretation	extensible	ObservationInterpretationCodes http://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard
Observation.component:DiastolicBP.code	extensible	VitalSigns http://hl7.org/fhir/ValueSet/observation-vitalsignresult from the FHIR Standard
Observation.component:DiastolicBP.value[x]	required	VitalSignsUnits http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1 from the FHIR Standard
Observation.component:DiastolicBP.value[x].comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 from the FHIR Standard
Observation.component:DiastolicBP.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.component:DiastolicBP.interpretation	extensible	ObservationInterpretationCodes http://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
au-core-obs-01	error	Observation.effective[x]	Date shall be at least to day : $this is DateTime implies $this.toString().length() >= 10
au-core-obs-04	error	Observation.bodySite	If a coded body site is provided, at least one code shall be from SNOMED CT : coding.exists() implies coding.where(system='http://snomed.info/sct').exists()
dom-2	error	Observation	If the resource is contained in another resource, it SHALL NOT contain nested Resources : contained.contained.empty()
dom-3	error	Observation	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	error	Observation	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	error	Observation	If a resource is contained in another resource, it SHALL NOT have a security label : contained.meta.security.empty()
dom-6	best practice	Observation	A resource should have narrative for robust management : text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()
obs-3	error	Observation.referenceRange	Must have at least a low or a high or text : low.exists() or high.exists() or text.exists()
obs-6	error	Observation	dataAbsentReason SHALL only be present if Observation.value[x] is not present : dataAbsentReason.empty() or value.empty()
obs-7	error	Observation	If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present : value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()
vs-1	error	Observation.effective[x]	if Observation.effective[x] is dateTime and has a value then that value shall be precise to the day : $this is dateTime implies $this.toString().length() >= 10
vs-2	error	Observation	If there is no component or hasMember element then either a value[x] or a data absent reason must be present. : (component.empty() and hasMember.empty()) implies (dataAbsentReason.exists() or value.exists())
vs-3	error	Observation.component, Observation.component:SystolicBP, Observation.component:DiastolicBP	If there is no a value a data absent reason must be present : value.exists() or dataAbsentReason.exists()

This structure is derived from observation-bp

Summary

Mandatory: 9 elements
Must-Support: 4 elements
Fixed Value: 7 elements

Structures

This structure refers to these other structures:

• AU Core Patient (http://hl7.org.au/fhir/core/StructureDefinition/au-core-patient)
• AU Core Encounter (http://hl7.org.au/fhir/core/StructureDefinition/au-core-encounter)
• AU Core Practitioner (http://hl7.org.au/fhir/core/StructureDefinition/au-core-practitioner)
• AU Core PractitionerRole (http://hl7.org.au/fhir/core/StructureDefinition/au-core-practitionerrole)
• AU Core Organization (http://hl7.org.au/fhir/core/StructureDefinition/au-core-organization)

Maturity: 0