{
  "description": null,
  "_filename": "Extension-replacementOf.StructureDefinition.json",
  "package_name": "uk.nhsdigital.r4",
  "date": null,
  "derivation": "constraint",
  "publisher": null,
  "fhirVersion": "4.0.1",
  "name": "Extension-replacementOf",
  "abstract": false,
  "type": "Extension",
  "experimental": null,
  "resourceType": "StructureDefinition",
  "title": null,
  "package_version": "2.1.14-discovery",
  "status": "draft",
  "id": "f7e29a97-848a-4304-90a0-a83c1bb819e2",
  "kind": "complex-type",
  "url": "https://fhir.nhs.uk/StructureDefinition/Extension-replacementOf",
  "context": [ {
    "type": "element",
    "expression": "MessageHeader"
  } ],
  "version": null,
  "differential": {
    "element": [ {
      "id": "Extension.url",
      "path": "Extension.url",
      "fixedUri": "https://fhir.nhs.uk/StructureDefinition/Extension-replacementOf"
    }, {
      "id": "Extension.value[x]",
      "min": 1,
      "path": "Extension.value[x]",
      "type": [ {
        "code": "Identifier"
      } ],
      "short": "Previous MessageHeader.identifier",
      "definition": "Should be populated in update messages"
    }, {
      "id": "Extension.value[x].value",
      "min": 1,
      "path": "Extension.value[x].value"
    } ]
  },
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}