Smart Health Checks, published by AEHRC CSIRO. This guide is not an authorized publication; it is the continuous build for version 0.3.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/aehrc/smart-forms-ig/ and changes regularly. See the Directory of published versions

• Content
• Detailed Descriptions
• Mappings
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Resource Profile: Smart Health Checks Head Circumference

This profile sets the minimum expectations for a Head Circumference resource to record, search and save head circumference information when used within Smart Health Checks.

Usages:

• Use this Profile: Smart Health Checks Extract Bundle
• CapabilityStatements using this Profile: SHC App and SHC Host FHIR Server

You can also check for usages in the FHIR IG Statistics

Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

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

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Observation	C	0..*	AUCoreHeadCircumference	Head circumference Constraints: obs-6, obs-7, vs-2, au-core-obs-02
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
status	?!SOΣ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatus (required) Fixed Value: final Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
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	SO	1..1	CodeableConcept	Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories. Obligations Actor SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
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	Head Circumference 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:HeadCircumCode	SOΣ	1..1	Coding	Code defined by a terminology system Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
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: 9843-4
coding:snomedHeadCircumCode	SOΣ	1..1	Coding	SNOMED CT Head Circumference Obligations Actor SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
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: 363812007
text	SOΣ	0..1	string	Plain text representation of the concept Obligations Actor SHALL:populate SHC App
subject	SOΣ	1..1	Reference(AU Core Patient)	Who and/or what the observation is about Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
encounter	SΣ	0..1	Reference(AU Core Encounter)	Healthcare event during which this observation is made
effective[x]	SOΣC	1..1	dateTime	Date, and optionally time, the observation was performed Constraints: vs-1, au-core-obs-01 Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate-if-known & SHALL:process SHC App
performer	SΣ	0..*	Reference(AU Core Practitioner | AU Core PractitionerRole | AU Core Organization | AU Core Patient | AU Core 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
value[x]:valueQuantity	SOΣC	0..1	Quantity	Head circumference Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
value	SOΣ	1..1	decimal	Numerical value (with implicit precision) Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	SOΣ	1..1	string	Unit representation Obligations Actor SHALL:populate-if-known & SHALL:process SHC Host FHIR Server SHALL:populate SHC App
system	SOΣC	1..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
code	SOΣ	1..1	code	Coded responses from the common UCUM units for vital signs value set. Binding: Metric Body Length Units (required) Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
dataAbsentReason	SC	0..1	CodeableConcept	Why the result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
component	SΣC	0..*	BackboneElement	Used when reporting systolic and diastolic blood pressure. Constraints: vs-3
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.
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.value[x]:valueQuantity.comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 From the FHIR Standard
Observation.value[x]:valueQuantity.code	required	MetricBodyLengthUnits https://healthterminologies.gov.au/fhir/ValueSet/metric-body-length-units-1 From https://tx.ontoserver.csiro.au/fhir
Observation.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason 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

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-02	error	Observation	At least value or data absent reason shall be present : dataAbsentReason.exists() or value.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	If there is no a value a data absent reason must be present : value.exists() or dataAbsentReason.exists()

This structure is derived from AUCoreHeadCircumference

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Observation			AUCoreHeadCircumference
status	O	1..1	code	registered | preliminary | final | amended + Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
Slices for category				Content/Rules for all slices
category:VSCat	O	1..1	CodeableConcept	Classification of type of observation Obligations Actor SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
code
Slices for coding				Content/Rules for all slices
coding:HeadCircumCode	SO	1..1	Coding	Code defined by a terminology system Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
coding:snomedHeadCircumCode	SO	1..1	Coding	SNOMED CT Head Circumference Obligations Actor SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
text	SO	0..1	string	Plain text representation of the concept Obligations Actor SHALL:populate SHC App
subject	O	1..1	Reference(AU Core Patient)	Who and/or what the observation is about Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
effective[x]	O	1..1	dateTime	Date, and optionally time, the observation was performed Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate-if-known & SHALL:process SHC App
Slices for value[x]				Content/Rules for all slices
value[x]:valueQuantity	O	0..1	Quantity	Head circumference Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
value	O	1..1	decimal	Numerical value (with implicit precision) Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
unit	O	1..1	string	Unit representation Obligations Actor SHALL:populate-if-known & SHALL:process SHC Host FHIR Server SHALL:populate SHC App
system	O	1..1	uri	System that defines coded unit form Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
code	O	1..1	code	Coded responses from the common UCUM units for vital signs value set. Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
Documentation for this format

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Observation	C	0..*	AUCoreHeadCircumference	Head circumference Constraints: obs-6, obs-7, vs-2, au-core-obs-02
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 This profile does not constrain the narrative in regard to content, language, or traceability to data elements
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	?!SOΣ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatus (required) Fixed Value: final Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
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	SO	1..1	CodeableConcept	Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories. Obligations Actor SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
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	Head Circumference 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:HeadCircumCode	SOΣ	1..1	Coding	Code defined by a terminology system Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
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: 9843-4
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:snomedHeadCircumCode	SOΣ	1..1	Coding	SNOMED CT Head Circumference Obligations Actor SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
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: 363812007
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	SOΣ	0..1	string	Plain text representation of the concept Obligations Actor SHALL:populate SHC App
subject	SOΣ	1..1	Reference(AU Core Patient)	Who and/or what the observation is about Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
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]	SOΣC	1..1	dateTime	Date, and optionally time, the observation was performed Constraints: vs-1, au-core-obs-01 Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate-if-known & SHALL:process SHC App
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 | AU Core 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
value[x]:valueQuantity	SOΣC	0..1	Quantity	Head circumference Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
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	SOΣ	1..1	decimal	Numerical value (with implicit precision) Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	SOΣ	1..1	string	Unit representation Obligations Actor SHALL:populate-if-known & SHALL:process SHC Host FHIR Server SHALL:populate SHC App
system	SOΣC	1..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
code	SOΣ	1..1	code	Coded responses from the common UCUM units for vital signs value set. Binding: Metric Body Length Units (required) Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
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 (preferred) Constraints: au-core-obs-04
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 Constraints: obs-3
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
component	SΣC	0..*	BackboneElement	Used when reporting systolic and diastolic blood pressure. Constraints: vs-3
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
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Observation.language	preferred	CommonLanguages http://hl7.org/fhir/ValueSet/languages From the FHIR Standard Additional Bindings Purpose AllLanguages Max Binding
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.value[x]:valueQuantity.comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 From the FHIR Standard
Observation.value[x]:valueQuantity.code	required	MetricBodyLengthUnits https://healthterminologies.gov.au/fhir/ValueSet/metric-body-length-units-1 From https://tx.ontoserver.csiro.au/fhir
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	preferred	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

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-02	error	Observation	At least value or data absent reason shall be present : dataAbsentReason.exists() or value.exists()
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	If there is no a value a data absent reason must be present : value.exists() or dataAbsentReason.exists()

This structure is derived from AUCoreHeadCircumference

Summary

Must-Support: 3 elements

Key Elements View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Observation	C	0..*	AUCoreHeadCircumference	Head circumference Constraints: obs-6, obs-7, vs-2, au-core-obs-02
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
status	?!SOΣ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatus (required) Fixed Value: final Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
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	SO	1..1	CodeableConcept	Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories. Obligations Actor SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
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	Head Circumference 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:HeadCircumCode	SOΣ	1..1	Coding	Code defined by a terminology system Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
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: 9843-4
coding:snomedHeadCircumCode	SOΣ	1..1	Coding	SNOMED CT Head Circumference Obligations Actor SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
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: 363812007
text	SOΣ	0..1	string	Plain text representation of the concept Obligations Actor SHALL:populate SHC App
subject	SOΣ	1..1	Reference(AU Core Patient)	Who and/or what the observation is about Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
encounter	SΣ	0..1	Reference(AU Core Encounter)	Healthcare event during which this observation is made
effective[x]	SOΣC	1..1	dateTime	Date, and optionally time, the observation was performed Constraints: vs-1, au-core-obs-01 Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate-if-known & SHALL:process SHC App
performer	SΣ	0..*	Reference(AU Core Practitioner | AU Core PractitionerRole | AU Core Organization | AU Core Patient | AU Core 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
value[x]:valueQuantity	SOΣC	0..1	Quantity	Head circumference Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
value	SOΣ	1..1	decimal	Numerical value (with implicit precision) Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	SOΣ	1..1	string	Unit representation Obligations Actor SHALL:populate-if-known & SHALL:process SHC Host FHIR Server SHALL:populate SHC App
system	SOΣC	1..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
code	SOΣ	1..1	code	Coded responses from the common UCUM units for vital signs value set. Binding: Metric Body Length Units (required) Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
dataAbsentReason	SC	0..1	CodeableConcept	Why the result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
component	SΣC	0..*	BackboneElement	Used when reporting systolic and diastolic blood pressure. Constraints: vs-3
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.
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.value[x]:valueQuantity.comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 From the FHIR Standard
Observation.value[x]:valueQuantity.code	required	MetricBodyLengthUnits https://healthterminologies.gov.au/fhir/ValueSet/metric-body-length-units-1 From https://tx.ontoserver.csiro.au/fhir
Observation.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason 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

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-02	error	Observation	At least value or data absent reason shall be present : dataAbsentReason.exists() or value.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	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 AUCoreHeadCircumference

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Observation			AUCoreHeadCircumference
status	O	1..1	code	registered | preliminary | final | amended + Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
Slices for category				Content/Rules for all slices
category:VSCat	O	1..1	CodeableConcept	Classification of type of observation Obligations Actor SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
code
Slices for coding				Content/Rules for all slices
coding:HeadCircumCode	SO	1..1	Coding	Code defined by a terminology system Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
coding:snomedHeadCircumCode	SO	1..1	Coding	SNOMED CT Head Circumference Obligations Actor SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
text	SO	0..1	string	Plain text representation of the concept Obligations Actor SHALL:populate SHC App
subject	O	1..1	Reference(AU Core Patient)	Who and/or what the observation is about Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
effective[x]	O	1..1	dateTime	Date, and optionally time, the observation was performed Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate-if-known & SHALL:process SHC App
Slices for value[x]				Content/Rules for all slices
value[x]:valueQuantity	O	0..1	Quantity	Head circumference Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
value	O	1..1	decimal	Numerical value (with implicit precision) Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
unit	O	1..1	string	Unit representation Obligations Actor SHALL:populate-if-known & SHALL:process SHC Host FHIR Server SHALL:populate SHC App
system	O	1..1	uri	System that defines coded unit form Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
code	O	1..1	code	Coded responses from the common UCUM units for vital signs value set. Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
Documentation for this format

Snapshot View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Observation	C	0..*	AUCoreHeadCircumference	Head circumference Constraints: obs-6, obs-7, vs-2, au-core-obs-02
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 This profile does not constrain the narrative in regard to content, language, or traceability to data elements
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	?!SOΣ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatus (required) Fixed Value: final Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
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	SO	1..1	CodeableConcept	Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories. Obligations Actor SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
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	Head Circumference 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:HeadCircumCode	SOΣ	1..1	Coding	Code defined by a terminology system Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
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: 9843-4
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:snomedHeadCircumCode	SOΣ	1..1	Coding	SNOMED CT Head Circumference Obligations Actor SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
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: 363812007
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	SOΣ	0..1	string	Plain text representation of the concept Obligations Actor SHALL:populate SHC App
subject	SOΣ	1..1	Reference(AU Core Patient)	Who and/or what the observation is about Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate SHC App
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]	SOΣC	1..1	dateTime	Date, and optionally time, the observation was performed Constraints: vs-1, au-core-obs-01 Obligations Actor SHALL:populate & SHALL:persist SHC Host FHIR Server SHALL:populate-if-known & SHALL:process SHC App
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 | AU Core 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
value[x]:valueQuantity	SOΣC	0..1	Quantity	Head circumference Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
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	SOΣ	1..1	decimal	Numerical value (with implicit precision) Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	SOΣ	1..1	string	Unit representation Obligations Actor SHALL:populate-if-known & SHALL:process SHC Host FHIR Server SHALL:populate SHC App
system	SOΣC	1..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
code	SOΣ	1..1	code	Coded responses from the common UCUM units for vital signs value set. Binding: Metric Body Length Units (required) Obligations Actor SHALL:populate-if-known & SHALL:persist SHC Host FHIR Server SHALL:populate & SHALL:process SHC App
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 (preferred) Constraints: au-core-obs-04
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 Constraints: obs-3
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
component	SΣC	0..*	BackboneElement	Used when reporting systolic and diastolic blood pressure. Constraints: vs-3
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
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Observation.language	preferred	CommonLanguages http://hl7.org/fhir/ValueSet/languages From the FHIR Standard Additional Bindings Purpose AllLanguages Max Binding
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.value[x]:valueQuantity.comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 From the FHIR Standard
Observation.value[x]:valueQuantity.code	required	MetricBodyLengthUnits https://healthterminologies.gov.au/fhir/ValueSet/metric-body-length-units-1 From https://tx.ontoserver.csiro.au/fhir
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	preferred	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

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-02	error	Observation	At least value or data absent reason shall be present : dataAbsentReason.exists() or value.exists()
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	If there is no a value a data absent reason must be present : value.exists() or dataAbsentReason.exists()

This structure is derived from AUCoreHeadCircumference

Summary

Must-Support: 3 elements