{
  "resourceType": "StructureDefinition",
  "url": "https://example.wales.nhs.uk/fhir/StructureDefinition/RhodriHearingTest",
  "name": "RhodriHearingTest",
  "status": "draft",
  "fhirVersion": "4.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Observation",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Observation",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Observation.extension",
        "path": "Observation.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "rules": "open"
        },
        "min": 0
      },
      {
        "id": "Observation.extension:testEnvironment",
        "path": "Observation.extension",
        "sliceName": "testEnvironment",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Extension",
            "profile": [
              "https://example.org/fhir/StructureDefinition/RhodriTestEnvironment"
            ]
          }
        ],
        "mustSupport": true,
        "isModifier": false
      },
      {
        "id": "Observation.category",
        "path": "Observation.category",
        "mustSupport": true
      },
      {
        "id": "Observation.code.coding.system",
        "path": "Observation.code.coding.system",
        "fixedUri": "http://snomed.info/sct"
      },
      {
        "id": "Observation.code.coding.code",
        "path": "Observation.code.coding.code",
        "fixedCode": "118230007"
      },
      {
        "id": "Observation.code.coding.display",
        "path": "Observation.code.coding.display",
        "fixedString": "Hearing finding (finding)"
      },
      {
        "id": "Observation.subject",
        "path": "Observation.subject",
        "min": 1,
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "https://example.wales.nhs.uk/fhir/StructureDefinition/RhodriPatient"
            ]
          }
        ],
        "mustSupport": true
      },
      {
        "id": "Observation.effective[x]",
        "path": "Observation.effective[x]",
        "min": 1,
        "type": [
          {
            "code": "dateTime"
          }
        ],
        "mustSupport": true
      },
      {
        "id": "Observation.value[x]",
        "path": "Observation.value[x]",
        "min": 1,
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "mustSupport": true
      },
      {
        "id": "Observation.note",
        "path": "Observation.note",
        "mustSupport": true
      },
      {
        "id": "Observation.bodySite.extension",
        "path": "Observation.bodySite.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "rules": "open"
        },
        "min": 1
      },
      {
        "id": "Observation.bodySite.extension:laterality",
        "path": "Observation.bodySite.extension",
        "sliceName": "laterality",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "Extension",
            "profile": [
              "https://example.wales.nhs.uk/fhir/StructureDefinition/RhodriLaterality"
            ]
          }
        ],
        "mustSupport": true,
        "isModifier": false
      },
      {
        "id": "Observation.method",
        "path": "Observation.method",
        "min": 1,
        "mustSupport": true
      },
      {
        "id": "Observation.device",
        "path": "Observation.device",
        "mustSupport": true
      },
      {
        "id": "Observation.derivedFrom",
        "path": "Observation.derivedFrom",
        "max": "1",
        "mustSupport": true
      },
      {
        "id": "Observation.component.referenceRange",
        "path": "Observation.component.referenceRange",
        "contentReference": "http://hl7.org/fhir/StructureDefinition/Observation#Observation.referenceRange"
      }
    ]
  }
}