{
  "resourceType": "StructureDefinition",
  "url": "https://mirjams.example.org/fhir/StructureDefinition/MirjamsObservation",
  "name": "MirjamsObservation",
  "status": "draft",
  "fhirVersion": "5.0.0",
  "kind": "resource",
  "abstract": false,
  "type": "Observation",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Observation",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Observation",
        "path": "Observation",
        "constraint": [
          {
            "key": "mir-2",
            "severity": "error",
            "human": "Fill in the value and/or the note field",
            "expression": "value.exists() or note.exists()"
          }
        ]
      },
      {
        "id": "Observation.extension:testEnvironment",
        "path": "Observation.extension",
        "sliceName": "testEnvironment",
        "max": "1",
        "type": [
          {
            "code": "Extension",
            "profile": [
              "https://mirjams.example.org/fhir/StructureDefinition/MirjamsTestEnvironmentExtension"
            ]
          }
        ]
      },
      {
        "id": "Observation.code",
        "path": "Observation.code",
        "patternCodeableConcept": {
          "coding": [
            {
              "system": "http://snomed.info/sct",
              "code": "118230007",
              "display": "Hearing finding (finding)"
            }
          ]
        },
        "mustSupport": true
      },
      {
        "id": "Observation.subject",
        "path": "Observation.subject",
        "min": 1,
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "https://mirjams.example.org/fhir/StructureDefinition/MirjamsPatient"
            ]
          }
        ],
        "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"
          }
        ],
        "condition": [
          "mir-2"
        ]
      },
      {
        "id": "Observation.note",
        "path": "Observation.note",
        "condition": [
          "mir-2"
        ],
        "mustSupport": true
      },
      {
        "id": "Observation.bodySite",
        "path": "Observation.bodySite",
        "min": 1
      },
      {
        "id": "Observation.bodySite.extension",
        "path": "Observation.bodySite.extension",
        "min": 1
      },
      {
        "id": "Observation.bodySite.extension:laterality",
        "path": "Observation.bodySite.extension",
        "sliceName": "laterality",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "Extension",
            "profile": [
              "https://mirjams.example.org/fhir/StructureDefinition/MirjamsLateralityExtension"
            ]
          }
        ],
        "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",
        "mustSupport": true
      }
    ]
  }
}