{
  "resourceType": "StructureDefinition",
  "id": "NHSHC-Communication",
  "url": "https://fhir.nhs.uk/StructureDefinition/NHSHC-Communication",
  "version": "0.1.0",
  "name": "NHSHCCommunication",
  "title": "NHSHC Communication",
  "status": "draft",
  "date": "2026-06-23",
  "publisher": "NHS England",
  "description": "Derived profile from FHIR R4 Communication for NHS Health Check Online. Enforces status=completed and requires a category from http://terminology.hl7.org/ValueSet/communication-category. Conveys interim update notifications to GP practice.",
  "fhirVersion": "4.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Communication",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Communication",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Communication",
        "path": "Communication"
      },
      {
        "id": "Communication.status",
        "path": "Communication.status",
        "min": 1,
        "fixedCode": "completed"
      },
      {
        "id": "Communication.category",
        "path": "Communication.category",
        "min": 1,
        "binding": {
          "strength": "required",
          "valueSet": "http://terminology.hl7.org/ValueSet/communication-category"
        }
      },
      {
        "id": "Communication.subject",
        "path": "Communication.subject",
        "min": 1,
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "https://fhir.hl7.org.uk/StructureDefinition/UKCore-Patient"
            ]
          }
        ]
      },
      {
        "id": "Communication.encounter",
        "path": "Communication.encounter",
        "min": 1
      },
      {
        "id": "Communication.sent",
        "path": "Communication.sent",
        "min": 1
      },
      {
        "id": "Communication.recipient",
        "path": "Communication.recipient",
        "min": 1
      },
      {
        "id": "Communication.sender",
        "path": "Communication.sender",
        "min": 1
      },
      {
        "id": "Communication.payload",
        "path": "Communication.payload",
        "min": 1
      },
      {
        "id": "Communication.payload.content[x]",
        "path": "Communication.payload.content[x]",
        "type": [
          {
            "code": "string"
          }
        ]
      }
    ]
  }
}