{
  "resourceType": "StructureDefinition",
  "id": "ext-identifierversion",
  "url": "http://hl7canada.ca/ig/baseline/StructureDefinition/ext-identifierversion",
  "name": "ExtensionIdentifierVersion",
  "title": "Extension: Identifier Version",
  "status": "active",
  "experimental": false,
  "description": "A version string indicating the currency/validity of an identifier",
  "fhirVersion": "5.0.0",
  "mapping": [
    {
      "identity": "BPCS",
      "name": "Internal BPCS API"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "Identifier"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Version for identifier",
        "definition": "A code indicating a specific version of an identifier credential",
        "comment": "For example, a health card version number, credit card version number, etc.  Used to help verify the authenticity of a credential",
        "max": "1"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://hl7canada.ca/ig/baseline/StructureDefinition/ext-identifierversion"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "type": [
          {
            "code": "string"
          }
        ],
        "mustSupport": true
      }
    ]
  }
}