# CDA Instance Identifier - Common Components FHIR Implementation Guide v26.0.0

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# Common Components FHIR Implementation Guide

26.0.0 - Trial
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*  [FHIR IGs](https://implementer.digitalhealth.gov.au/fhir-resources) 
*  [Implementer Hub](https://implementer.digitalhealth.gov.au/) 
*  [Agency site](https://www.digitalhealth.gov.au) 

* [**Table of Contents**](toc.md)
* [**FHIR Artefacts**](artifacts.md)
* **CDA Instance Identifier**

## Data Type Profile: CDA Instance Identifier 

| | |
| :--- | :--- |
| *Official URL*:http://digitalhealth.gov.au/fhir/cc/StructureDefinition/cda-instance-identifier | *Version*:26.0.0 |
| Draft as of 2026-07-14 | *Computable Name*:CDA_Instance_Identifier |
| **Copyright/Legal**: This content is licensed under a Creative Commons Attribution 4.0 International License. See [https://creativecommons.org/licenses/by/4.0/](https://creativecommons.org/licenses/by/4.0/) | |

 
Identifier datatype profile for representing the source CDA document instance identifier in a FHIR context. The identifier value is expressed as a URN OID (urn:ietf:rfc:3986), with the assigner carrying the PCEHR repository OID and display name. 

 
The purpose of this profile is to provide a consistent Identifier profile for CDA instance identifiers so source document provenance can be carried into FHIR using the mandated URN OID representation and assigner semantics. 

**Usages:**

* Use this DataType Profile: [Source CDA Document Identifier](StructureDefinition-source-cda-document-identifier.md)

You can also check for [usages in the FHIR IG Statistics](https://packages2.fhir.org/xig/resource/au.gov.digitalhealth.cc|current/StructureDefinition/StructureDefinition-cda-instance-identifier.json)

### Formal Views of Profile Content

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

 

Other representations of profile: [CSV](StructureDefinition-cda-instance-identifier.csv), [Excel](StructureDefinition-cda-instance-identifier.xlsx), [Schematron](StructureDefinition-cda-instance-identifier.sch) 

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IG © 2026+ [Australian Digital Health Agency](https://www.digitalhealth.gov.au/). Package au.gov.digitalhealth.cc#26.0.0 based on [FHIR 4.0.1](http://hl7.org/fhir/R4/). Generated 2026-07-14

Links: [Table of Contents](toc.md) | [QA Report](qa.md) | [Version History](https://fhir.digitalhealth.gov.au/dh/history.html) | [Report an issue or propose a change](mailto:help@digitalhealth.gov.au) 

Publisher: [Australian Digital Health Agency](https://www.digitalhealth.gov.au) | ABN: 84 425 496 912, Level 25, 175 Liverpool Street, Sydney, NSW 2000 | Phone: [1300 901 001](tel:1300901001) | Email: [help@digitalhealth.gov.au](mailto:help@digitalhealth.gov.au) | [https://www.digitalhealth.gov.au](https://www.digitalhealth.gov.au) | [Privacy policy](https://www.digitalhealth.gov.au/about-us/policies-privacy-and-reporting/privacy-policy) | [Terms of Use](https://www.digitalhealth.gov.au/about-us/policies-privacy-and-reporting/terms-of-use)

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The Australian Digital Health Agency acknowledges the Traditional Custodians of Country throughout Australia, and their continuing connection to land, sea and community. We pay our respects to them and their cultures, and to Elders, past and present.



## Resource Content

```json
{
  "resourceType" : "StructureDefinition",
  "id" : "cda-instance-identifier",
  "url" : "http://digitalhealth.gov.au/fhir/cc/StructureDefinition/cda-instance-identifier",
  "version" : "26.0.0",
  "name" : "CDA_Instance_Identifier",
  "title" : "CDA Instance Identifier",
  "status" : "draft",
  "experimental" : false,
  "date" : "2026-07-14T04:17:55+00:00",
  "publisher" : "Australian Digital Health Agency",
  "contact" : [{
    "name" : "Australian Digital Health Agency",
    "telecom" : [{
      "system" : "url",
      "value" : "https://www.digitalhealth.gov.au/"
    },
    {
      "system" : "email",
      "value" : "help@digitalhealth.gov.au"
    }]
  },
  {
    "name" : "Australian Digital Health Agency",
    "telecom" : [{
      "system" : "email",
      "value" : "mailto:help@digitalhealth.gov.au",
      "use" : "work"
    }]
  }],
  "description" : "Identifier datatype profile for representing the source CDA document instance identifier in a FHIR context. The identifier value is expressed as a URN OID (urn:ietf:rfc:3986), with the assigner carrying the PCEHR repository OID and display name.",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "urn:iso:std:iso:3166",
      "code" : "AU",
      "display" : "Australia"
    }]
  }],
  "purpose" : "The purpose of this profile is to provide a consistent Identifier profile for CDA instance identifiers so source document provenance can be carried into FHIR using the mandated URN OID representation and assigner semantics.",
  "copyright" : "This content is licensed under a Creative Commons Attribution 4.0 International License. See [https://creativecommons.org/licenses/by/4.0/](https://creativecommons.org/licenses/by/4.0/)",
  "fhirVersion" : "4.0.1",
  "mapping" : [{
    "identity" : "v2",
    "uri" : "http://hl7.org/v2",
    "name" : "HL7 v2 Mapping"
  },
  {
    "identity" : "rim",
    "uri" : "http://hl7.org/v3",
    "name" : "RIM Mapping"
  },
  {
    "identity" : "servd",
    "uri" : "http://www.omg.org/spec/ServD/1.0/",
    "name" : "ServD"
  }],
  "kind" : "complex-type",
  "abstract" : false,
  "type" : "Identifier",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Identifier|4.0.1",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "id" : "Identifier",
      "path" : "Identifier"
    },
    {
      "id" : "Identifier.type",
      "path" : "Identifier.type",
      "min" : 1,
      "patternCodeableConcept" : {
        "coding" : [{
          "system" : "http://digitalhealth.gov.au/fhir/cc/CodeSystem/identifier-type-cs",
          "code" : "CDII",
          "display" : "CDA Instance Identifier"
        }]
      },
      "binding" : {
        "strength" : "required",
        "valueSet" : "http://digitalhealth.gov.au/fhir/cc/ValueSet/identifier-type-vs|26.0.0"
      }
    },
    {
      "id" : "Identifier.system",
      "path" : "Identifier.system",
      "min" : 1,
      "patternUri" : "urn:ietf:rfc:3986"
    },
    {
      "id" : "Identifier.value",
      "path" : "Identifier.value",
      "min" : 1
    },
    {
      "id" : "Identifier.assigner",
      "path" : "Identifier.assigner",
      "min" : 1
    },
    {
      "id" : "Identifier.assigner.identifier",
      "path" : "Identifier.assigner.identifier",
      "min" : 1
    },
    {
      "id" : "Identifier.assigner.identifier.system",
      "path" : "Identifier.assigner.identifier.system",
      "min" : 1,
      "patternUri" : "urn:ietf:rfc:3986"
    },
    {
      "id" : "Identifier.assigner.identifier.value",
      "path" : "Identifier.assigner.identifier.value",
      "min" : 1
    },
    {
      "id" : "Identifier.assigner.display",
      "path" : "Identifier.assigner.display",
      "patternString" : "PCEHR Assigned Identifier - Repository"
    }]
  }
}

```
