Clinical Document Architecture with Australian Schema, published by Australian Digital Health Agency. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/AuDigitalHealth/cda-au-schema/ and changes regularly. See the Directory of published versions

Logical Model: Act (CDA Class)

Official URL: http://hl7.org/cda/stds/core/StructureDefinition/Act Version: 1.0.0
Active as of 2025-08-28 Maturity Level: 1 Responsible: HL7 Computable Name: Act

A derivative of the RIM Act class, to be used when the other more specific classes aren't appropriate.

Act.negationInd, when set to "true", is a positive assertion that the Act as a whole is negated. Some properties such as Act.id, Act.moodCode, and the participations are not affected. These properties always have the same meaning: i.e., the author remains the author of the negative Act. An act statement with negationInd is still a statement about the specific fact described by the Act. For instance, a negated "finding of wheezing on July 1" means that the author positively denies that there was wheezing on July 1, and that he takes the same responsibility for such statement and the same requirement to have evidence for such statement than if he had not used negation.

Usages:

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.

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Act 1..1 InfrastructureRoot XML Namespace: urn:hl7-org:v3
Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId
Base for all types and resources
Instance of this type are validated by templateId
Logical Container: ClinicalDocument (CDA Class)
... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
... realmCode 0..* CS
... typeId C 0..1 II Constraints: II-1
.... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
.... @assigningAuthorityName 0..1 st
.... @displayable 0..1 bl
.... @root 1..1 oid, uuid, ruid Fixed Value: 2.16.840.1.113883.1.3
.... @extension 1..1 st
... @classCode 1..1 cs Binding: XActClassDocumentEntryAct (2.0.0) (required)
... @moodCode 1..1 cs Binding: XDocumentActMood (2.0.0) (required)
... @negationInd 0..1 bl
... id 0..* II
... code 1..1 CD Binding: v3 Code System ActCode (example)
... text 0..1 ED
... statusCode 0..1 CS Binding: ActStatus (required)
... effectiveTime 0..1 IVL_TS
... priorityCode 0..1 CE Binding: ActPriority (example)
... languageCode 0..1 CS Binding: AllLanguages (required)
... subject 0..1 Subject
... specimen 0..* Specimen
... performer 0..* Performer2
... author 0..* Author
... informant 0..* Informant
... participant 0..* Participant2
... entryRelationship 0..* EntryRelationship
... reference 0..* Reference
... precondition 0..* Precondition
... sdtcPrecondition2 0..* Precondition2 XML Namespace: urn:hl7-org:sdtc
XML: precondition2 (urn:hl7-org:sdtc)
... sdtcInFulfillmentOf1 0..* InFulfillmentOf1 XML Namespace: urn:hl7-org:sdtc
XML: inFulfillmentOf1 (urn:hl7-org:sdtc)

doco Documentation for this format

Terminology Bindings

PathConformanceValueSetURI
Act.nullFlavorrequiredCDANullFlavor
http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor
From this IG
Act.typeId.nullFlavorrequiredCDANullFlavor
http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor
From this IG
Act.classCoderequiredXActClassDocumentEntryAct
http://terminology.hl7.org/ValueSet/v3-xActClassDocumentEntryAct|2.0.0
Act.moodCoderequiredXDocumentActMood
http://terminology.hl7.org/ValueSet/v3-xDocumentActMood|2.0.0
Act.codeexampleActCode
http://terminology.hl7.org/ValueSet/v3-ActCode
Act.statusCoderequiredActStatus
http://terminology.hl7.org/ValueSet/v3-ActStatus
Act.priorityCodeexampleActPriority
http://terminology.hl7.org/ValueSet/v3-ActPriority
Act.languageCoderequiredAllLanguages
http://hl7.org/fhir/ValueSet/all-languages
From the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
II-1errorAct.typeIdAn II instance must have either a root or an nullFlavor.
: root.exists() or nullFlavor.exists()

This structure is derived from InfrastructureRoot

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Act 1..1 InfrastructureRoot XML Namespace: urn:hl7-org:v3
Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId
Base for all types and resources
Instance of this type are validated by templateId
Logical Container: ClinicalDocument (CDA Class)
... @classCode 1..1 cs Binding: XActClassDocumentEntryAct (2.0.0) (required)
... @moodCode 1..1 cs Binding: XDocumentActMood (2.0.0) (required)
... @negationInd 0..1 bl
... code 1..1 CD Binding: v3 Code System ActCode (example)
... text 0..1 ED
... statusCode 0..1 CS Binding: ActStatus (required)
... effectiveTime 0..1 IVL_TS
... priorityCode 0..1 CE Binding: ActPriority (example)
... languageCode 0..1 CS Binding: AllLanguages (required)
... subject 0..1 Subject
... specimen 0..* Specimen
... performer 0..* Performer2
... author 0..* Author
... informant 0..* Informant
... participant 0..* Participant2
... entryRelationship 0..* EntryRelationship
... reference 0..* Reference
... precondition 0..* Precondition
... sdtcPrecondition2 0..* Precondition2 XML Namespace: urn:hl7-org:sdtc
XML: precondition2 (urn:hl7-org:sdtc)
... sdtcInFulfillmentOf1 0..* InFulfillmentOf1 XML Namespace: urn:hl7-org:sdtc
XML: inFulfillmentOf1 (urn:hl7-org:sdtc)

doco Documentation for this format

Terminology Bindings (Differential)

PathConformanceValueSetURI
Act.classCoderequiredXActClassDocumentEntryAct
http://terminology.hl7.org/ValueSet/v3-xActClassDocumentEntryAct|2.0.0
Act.moodCoderequiredXDocumentActMood
http://terminology.hl7.org/ValueSet/v3-xDocumentActMood|2.0.0
Act.codeexampleActCode
http://terminology.hl7.org/ValueSet/v3-ActCode
Act.statusCoderequiredActStatus
http://terminology.hl7.org/ValueSet/v3-ActStatus
Act.priorityCodeexampleActPriority
http://terminology.hl7.org/ValueSet/v3-ActPriority
Act.languageCoderequiredAllLanguages
http://hl7.org/fhir/ValueSet/all-languages
From the FHIR Standard
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Act 1..1 InfrastructureRoot XML Namespace: urn:hl7-org:v3
Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId
Base for all types and resources
Instance of this type are validated by templateId
Logical Container: ClinicalDocument (CDA Class)
... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
... realmCode 0..* CS
... typeId C 0..1 II Constraints: II-1
.... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
.... @assigningAuthorityName 0..1 st
.... @displayable 0..1 bl
.... @root 1..1 oid, uuid, ruid Fixed Value: 2.16.840.1.113883.1.3
.... @extension 1..1 st
... @classCode 1..1 cs Binding: XActClassDocumentEntryAct (2.0.0) (required)
... @moodCode 1..1 cs Binding: XDocumentActMood (2.0.0) (required)
... @negationInd 0..1 bl
... id 0..* II
... code 1..1 CD Binding: v3 Code System ActCode (example)
... text 0..1 ED
... statusCode 0..1 CS Binding: ActStatus (required)
... effectiveTime 0..1 IVL_TS
... priorityCode 0..1 CE Binding: ActPriority (example)
... languageCode 0..1 CS Binding: AllLanguages (required)
... subject 0..1 Subject
... specimen 0..* Specimen
... performer 0..* Performer2
... author 0..* Author
... informant 0..* Informant
... participant 0..* Participant2
... entryRelationship 0..* EntryRelationship
... reference 0..* Reference
... precondition 0..* Precondition
... sdtcPrecondition2 0..* Precondition2 XML Namespace: urn:hl7-org:sdtc
XML: precondition2 (urn:hl7-org:sdtc)
... sdtcInFulfillmentOf1 0..* InFulfillmentOf1 XML Namespace: urn:hl7-org:sdtc
XML: inFulfillmentOf1 (urn:hl7-org:sdtc)

doco Documentation for this format

Terminology Bindings

PathConformanceValueSetURI
Act.nullFlavorrequiredCDANullFlavor
http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor
From this IG
Act.typeId.nullFlavorrequiredCDANullFlavor
http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor
From this IG
Act.classCoderequiredXActClassDocumentEntryAct
http://terminology.hl7.org/ValueSet/v3-xActClassDocumentEntryAct|2.0.0
Act.moodCoderequiredXDocumentActMood
http://terminology.hl7.org/ValueSet/v3-xDocumentActMood|2.0.0
Act.codeexampleActCode
http://terminology.hl7.org/ValueSet/v3-ActCode
Act.statusCoderequiredActStatus
http://terminology.hl7.org/ValueSet/v3-ActStatus
Act.priorityCodeexampleActPriority
http://terminology.hl7.org/ValueSet/v3-ActPriority
Act.languageCoderequiredAllLanguages
http://hl7.org/fhir/ValueSet/all-languages
From the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
II-1errorAct.typeIdAn II instance must have either a root or an nullFlavor.
: root.exists() or nullFlavor.exists()

This structure is derived from InfrastructureRoot

Summary

Mandatory: 0 element(3 nested mandatory elements)

Structures

This structure refers to these other structures:

Maturity: 1

Key Elements View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Act 1..1 InfrastructureRoot XML Namespace: urn:hl7-org:v3
Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId
Base for all types and resources
Instance of this type are validated by templateId
Logical Container: ClinicalDocument (CDA Class)
... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
... realmCode 0..* CS
... typeId C 0..1 II Constraints: II-1
.... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
.... @assigningAuthorityName 0..1 st
.... @displayable 0..1 bl
.... @root 1..1 oid, uuid, ruid Fixed Value: 2.16.840.1.113883.1.3
.... @extension 1..1 st
... @classCode 1..1 cs Binding: XActClassDocumentEntryAct (2.0.0) (required)
... @moodCode 1..1 cs Binding: XDocumentActMood (2.0.0) (required)
... @negationInd 0..1 bl
... id 0..* II
... code 1..1 CD Binding: v3 Code System ActCode (example)
... text 0..1 ED
... statusCode 0..1 CS Binding: ActStatus (required)
... effectiveTime 0..1 IVL_TS
... priorityCode 0..1 CE Binding: ActPriority (example)
... languageCode 0..1 CS Binding: AllLanguages (required)
... subject 0..1 Subject
... specimen 0..* Specimen
... performer 0..* Performer2
... author 0..* Author
... informant 0..* Informant
... participant 0..* Participant2
... entryRelationship 0..* EntryRelationship
... reference 0..* Reference
... precondition 0..* Precondition
... sdtcPrecondition2 0..* Precondition2 XML Namespace: urn:hl7-org:sdtc
XML: precondition2 (urn:hl7-org:sdtc)
... sdtcInFulfillmentOf1 0..* InFulfillmentOf1 XML Namespace: urn:hl7-org:sdtc
XML: inFulfillmentOf1 (urn:hl7-org:sdtc)

doco Documentation for this format

Terminology Bindings

PathConformanceValueSetURI
Act.nullFlavorrequiredCDANullFlavor
http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor
From this IG
Act.typeId.nullFlavorrequiredCDANullFlavor
http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor
From this IG
Act.classCoderequiredXActClassDocumentEntryAct
http://terminology.hl7.org/ValueSet/v3-xActClassDocumentEntryAct|2.0.0
Act.moodCoderequiredXDocumentActMood
http://terminology.hl7.org/ValueSet/v3-xDocumentActMood|2.0.0
Act.codeexampleActCode
http://terminology.hl7.org/ValueSet/v3-ActCode
Act.statusCoderequiredActStatus
http://terminology.hl7.org/ValueSet/v3-ActStatus
Act.priorityCodeexampleActPriority
http://terminology.hl7.org/ValueSet/v3-ActPriority
Act.languageCoderequiredAllLanguages
http://hl7.org/fhir/ValueSet/all-languages
From the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
II-1errorAct.typeIdAn II instance must have either a root or an nullFlavor.
: root.exists() or nullFlavor.exists()

Differential View

This structure is derived from InfrastructureRoot

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Act 1..1 InfrastructureRoot XML Namespace: urn:hl7-org:v3
Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId
Base for all types and resources
Instance of this type are validated by templateId
Logical Container: ClinicalDocument (CDA Class)
... @classCode 1..1 cs Binding: XActClassDocumentEntryAct (2.0.0) (required)
... @moodCode 1..1 cs Binding: XDocumentActMood (2.0.0) (required)
... @negationInd 0..1 bl
... code 1..1 CD Binding: v3 Code System ActCode (example)
... text 0..1 ED
... statusCode 0..1 CS Binding: ActStatus (required)
... effectiveTime 0..1 IVL_TS
... priorityCode 0..1 CE Binding: ActPriority (example)
... languageCode 0..1 CS Binding: AllLanguages (required)
... subject 0..1 Subject
... specimen 0..* Specimen
... performer 0..* Performer2
... author 0..* Author
... informant 0..* Informant
... participant 0..* Participant2
... entryRelationship 0..* EntryRelationship
... reference 0..* Reference
... precondition 0..* Precondition
... sdtcPrecondition2 0..* Precondition2 XML Namespace: urn:hl7-org:sdtc
XML: precondition2 (urn:hl7-org:sdtc)
... sdtcInFulfillmentOf1 0..* InFulfillmentOf1 XML Namespace: urn:hl7-org:sdtc
XML: inFulfillmentOf1 (urn:hl7-org:sdtc)

doco Documentation for this format

Terminology Bindings (Differential)

PathConformanceValueSetURI
Act.classCoderequiredXActClassDocumentEntryAct
http://terminology.hl7.org/ValueSet/v3-xActClassDocumentEntryAct|2.0.0
Act.moodCoderequiredXDocumentActMood
http://terminology.hl7.org/ValueSet/v3-xDocumentActMood|2.0.0
Act.codeexampleActCode
http://terminology.hl7.org/ValueSet/v3-ActCode
Act.statusCoderequiredActStatus
http://terminology.hl7.org/ValueSet/v3-ActStatus
Act.priorityCodeexampleActPriority
http://terminology.hl7.org/ValueSet/v3-ActPriority
Act.languageCoderequiredAllLanguages
http://hl7.org/fhir/ValueSet/all-languages
From the FHIR Standard

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Act 1..1 InfrastructureRoot XML Namespace: urn:hl7-org:v3
Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId
Base for all types and resources
Instance of this type are validated by templateId
Logical Container: ClinicalDocument (CDA Class)
... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
... realmCode 0..* CS
... typeId C 0..1 II Constraints: II-1
.... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
.... @assigningAuthorityName 0..1 st
.... @displayable 0..1 bl
.... @root 1..1 oid, uuid, ruid Fixed Value: 2.16.840.1.113883.1.3
.... @extension 1..1 st
... @classCode 1..1 cs Binding: XActClassDocumentEntryAct (2.0.0) (required)
... @moodCode 1..1 cs Binding: XDocumentActMood (2.0.0) (required)
... @negationInd 0..1 bl
... id 0..* II
... code 1..1 CD Binding: v3 Code System ActCode (example)
... text 0..1 ED
... statusCode 0..1 CS Binding: ActStatus (required)
... effectiveTime 0..1 IVL_TS
... priorityCode 0..1 CE Binding: ActPriority (example)
... languageCode 0..1 CS Binding: AllLanguages (required)
... subject 0..1 Subject
... specimen 0..* Specimen
... performer 0..* Performer2
... author 0..* Author
... informant 0..* Informant
... participant 0..* Participant2
... entryRelationship 0..* EntryRelationship
... reference 0..* Reference
... precondition 0..* Precondition
... sdtcPrecondition2 0..* Precondition2 XML Namespace: urn:hl7-org:sdtc
XML: precondition2 (urn:hl7-org:sdtc)
... sdtcInFulfillmentOf1 0..* InFulfillmentOf1 XML Namespace: urn:hl7-org:sdtc
XML: inFulfillmentOf1 (urn:hl7-org:sdtc)

doco Documentation for this format

Terminology Bindings

PathConformanceValueSetURI
Act.nullFlavorrequiredCDANullFlavor
http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor
From this IG
Act.typeId.nullFlavorrequiredCDANullFlavor
http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor
From this IG
Act.classCoderequiredXActClassDocumentEntryAct
http://terminology.hl7.org/ValueSet/v3-xActClassDocumentEntryAct|2.0.0
Act.moodCoderequiredXDocumentActMood
http://terminology.hl7.org/ValueSet/v3-xDocumentActMood|2.0.0
Act.codeexampleActCode
http://terminology.hl7.org/ValueSet/v3-ActCode
Act.statusCoderequiredActStatus
http://terminology.hl7.org/ValueSet/v3-ActStatus
Act.priorityCodeexampleActPriority
http://terminology.hl7.org/ValueSet/v3-ActPriority
Act.languageCoderequiredAllLanguages
http://hl7.org/fhir/ValueSet/all-languages
From the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
II-1errorAct.typeIdAn II instance must have either a root or an nullFlavor.
: root.exists() or nullFlavor.exists()

This structure is derived from InfrastructureRoot

Summary

Mandatory: 0 element(3 nested mandatory elements)

Structures

This structure refers to these other structures:

Maturity: 1

 

Other representations of profile: CSV, Excel