{
  "resourceType": "StructureDefinition",
  "url": "https://fhir.nhs.uk/StructureDefinition/NHSDigital-DocumentReference-NRL",
  "name": "NHSDigitalDocumentReferenceNRL",
  "status": "draft",
  "fhirVersion": "4.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "DocumentReference",
  "baseDefinition": "https://fhir.nhs.uk/StructureDefinition/NHSDigital-DocumentReference",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "DocumentReference.type",
        "path": "DocumentReference.type",
        "min": 1,
        "binding": {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
              "valueString": "DocumentC80Type"
            }
          ],
          "strength": "required",
          "valueSet": "https://fhir.nhs.uk/ValueSet/Document-Type"
        }
      }
    ]
  }
}