{
  "resourceType": "StructureDefinition",
  "meta": {
    "lastUpdated": "2022-01-29T10:46:53.708+00:00"
  },
  "url": "https://example.org/fhir/StructureDefinition/bodyweight",
  "name": "ObsverationBodyweight",
  "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.code.coding.system",
        "path": "Observation.code.coding.system",
        "min": 1,
        "fixedUri": "http://snomed.info/sct"
      },
      {
        "id": "Observation.code.coding.code",
        "path": "Observation.code.coding.code",
        "min": 1,
        "fixedCode": "27113001"
      },
      {
        "id": "Observation.subject",
        "path": "Observation.subject",
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://hl7.org/fhir/StructureDefinition/Group",
              "http://hl7.org/fhir/StructureDefinition/Device",
              "http://hl7.org/fhir/StructureDefinition/Location",
              "https://example.org/fhir/StructureDefinition/PATIENTHPI"
            ]
          }
        ]
      },
      {
        "id": "Observation.value[x]",
        "path": "Observation.value[x]",
        "min": 1,
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Observation.value[x].unit",
        "path": "Observation.value[x].unit",
        "fixedString": "kilogram"
      },
      {
        "id": "Observation.value[x].system",
        "path": "Observation.value[x].system",
        "fixedUri": "http://ucum.org"
      },
      {
        "id": "Observation.value[x].code",
        "path": "Observation.value[x].code",
        "fixedCode": "kg"
      },
      {
        "id": "Observation.bodySite",
        "path": "Observation.bodySite",
        "max": "0"
      },
      {
        "id": "Observation.specimen",
        "path": "Observation.specimen",
        "max": "0"
      }
    ]
  }
}