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 1.0.1 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: II: InstanceIdentifier (V3 Data Type)

Official URL: http://hl7.org/cda/stds/core/StructureDefinition/II Version: 1.0.1
Active as of 2025-10-09 Maturity Level: 1 Responsible: HL7 Computable Name: II

An identifier that uniquely identifies a thing or object. Examples are object identifier for HL7 RIM objects, medical record number, order id, service catalog item id, Vehicle Identification Number (VIN), etc. Instance identifiers are defined based on ISO object identifiers.

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
.. II C 1..* ANY XML Namespace: urn:hl7-org:v3
Base for all types and resources

Elements defined in Ancestors:@nullFlavor
Logical Container: ClinicalDocument (CDA Class)
Constraints: II-1
... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
... @assigningAuthorityName 0..1 st
... @displayable 0..1 bl
... @extension 0..1 st

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
II.nullFlavor Base required CDANullFlavor 📦1.0.1 This IG

Constraints

Id Grade Path(s) Description Expression
II-1 error II An II instance must have either a root or an nullFlavor. root.exists() or nullFlavor.exists()

This structure is derived from ANY

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. II C 1..* ANY XML Namespace: urn:hl7-org:v3
Base for all types and resources

Elements defined in Ancestors:@nullFlavor
Logical Container: ClinicalDocument (CDA Class)
Constraints: II-1
... @assigningAuthorityName 0..1 st
... @displayable 0..1 bl
... @root 0..1 oid, uuid, ruid

doco Documentation for this format

Constraints

Id Grade Path(s) Description Expression
II-1 error II An II instance must have either a root or an nullFlavor. root.exists() or nullFlavor.exists()
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. II C 1..* ANY XML Namespace: urn:hl7-org:v3
Base for all types and resources

Elements defined in Ancestors:@nullFlavor
Logical Container: ClinicalDocument (CDA Class)
Constraints: II-1
... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
... @assigningAuthorityName 0..1 st
... @displayable 0..1 bl
... @extension 0..1 st

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
II.nullFlavor Base required CDANullFlavor 📦1.0.1 This IG

Constraints

Id Grade Path(s) Description Expression
II-1 error II An II instance must have either a root or an nullFlavor. root.exists() or nullFlavor.exists()

Key Elements View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. II C 1..* ANY XML Namespace: urn:hl7-org:v3
Base for all types and resources

Elements defined in Ancestors:@nullFlavor
Logical Container: ClinicalDocument (CDA Class)
Constraints: II-1
... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
... @assigningAuthorityName 0..1 st
... @displayable 0..1 bl
... @extension 0..1 st

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
II.nullFlavor Base required CDANullFlavor 📦1.0.1 This IG

Constraints

Id Grade Path(s) Description Expression
II-1 error II An II instance must have either a root or an nullFlavor. root.exists() or nullFlavor.exists()

Differential View

This structure is derived from ANY

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. II C 1..* ANY XML Namespace: urn:hl7-org:v3
Base for all types and resources

Elements defined in Ancestors:@nullFlavor
Logical Container: ClinicalDocument (CDA Class)
Constraints: II-1
... @assigningAuthorityName 0..1 st
... @displayable 0..1 bl
... @root 0..1 oid, uuid, ruid

doco Documentation for this format

Constraints

Id Grade Path(s) Description Expression
II-1 error II An II instance must have either a root or an nullFlavor. root.exists() or nullFlavor.exists()

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. II C 1..* ANY XML Namespace: urn:hl7-org:v3
Base for all types and resources

Elements defined in Ancestors:@nullFlavor
Logical Container: ClinicalDocument (CDA Class)
Constraints: II-1
... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
... @assigningAuthorityName 0..1 st
... @displayable 0..1 bl
... @extension 0..1 st

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
II.nullFlavor Base required CDANullFlavor 📦1.0.1 This IG

Constraints

Id Grade Path(s) Description Expression
II-1 error II An II instance must have either a root or an nullFlavor. root.exists() or nullFlavor.exists()

 

Other representations of profile: CSV, Excel