{
  "resourceType": "StructureDefinition",
  "id": "himsCode",
  "url": "http://example.org/fhir/StructureDefinition/himsCode",
  "name": "HimsCode",
  "title": "HIMS Code Extension",
  "status": "active",
  "date": "2025-06-28",
  "publisher": "Example Publisher",
  "description": "An extension to store HIMS code mappings for questionnaire items.",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "context": [
    {
      "type": "element",
      "expression": "Questionnaire.item"
    }
  ],
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "HIMS code value",
        "definition": "A code string for HIMS reporting",
        "min": 0,
        "max": "1"
      },
      {
        "id": "Extension.valueString",
        "path": "Extension.valueString",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      }
    ]
  }
}