{
  "resourceType": "StructureDefinition",
  "id": "bec1adeb-104c-46ce-8b28-775eecdf80ab",
  "url": "https://fhir.nhs.uk/StructureDefinition/Extension-spineEndpoint",
  "name": "ExtensionspineEndpoint",
  "status": "draft",
  "fhirVersion": "4.0.1",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "MessageHeader.source"
    },
    {
      "type": "element",
      "expression": "MessageHeader.destination"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "https://fhir.nhs.uk/StructureDefinition/Extension-spineEndpoint"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "type": [
          {
            "code": "Identifier"
          }
        ]
      },
      {
        "id": "Extension.value[x].system",
        "path": "Extension.value[x].system",
        "fixedUri": "https://fhir.nhs.uk/Id/spine-ASID"
      }
    ]
  }
}