{
  "resourceType": "StructureDefinition",
  "url": "https://slfhir/fhir/StructureDefinition/SL_Observation",
  "name": "SL_Observation",
  "status": "draft",
  "date": "2023-09-28T16:58:27.1453797+00:00",
  "fhirVersion": "5.0.0",
  "kind": "resource",
  "abstract": false,
  "type": "Observation",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Observation",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Observation.identifier",
        "path": "Observation.identifier",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Observation.identifier.system",
        "path": "Observation.identifier.system",
        "min": 1,
        "fixedUri": "htttp:slfhir/hhims/mrn"
      },
      {
        "id": "Observation.identifier.period.start",
        "path": "Observation.identifier.period.start",
        "min": 1
      },
      {
        "id": "Observation.code.coding.system",
        "path": "Observation.code.coding.system",
        "fixedUri": "http://loinc.org"
      },
      {
        "id": "Observation.value[x]",
        "path": "Observation.value[x]",
        "type": [
          {
            "code": "Ratio"
          }
        ]
      },
      {
        "id": "Observation.value[x].numerator.unit",
        "path": "Observation.value[x].numerator.unit",
        "fixedString": "http://unitsofmeasure.org"
      },
      {
        "id": "Observation.bodySite.coding.system",
        "path": "Observation.bodySite.coding.system",
        "fixedUri": "http://hl7.org/fhir/ValueSet/body-site"
      },
      {
        "id": "Observation.device.reference",
        "path": "Observation.device.reference",
        "binding": {
          "strength": "extensible",
          "description": "device",
          "valueSet": "http://loinc.org"
        }
      }
    ]
  }
}