{
  "resourceType": "StructureDefinition",
  "url": "http://medico-emr.net/stu3/sd/MXT-Observation-LabStringUnit-1",
  "name": "MXT-Observation-LabStringUnit-1",
  "status": "draft",
  "description": "Usually the unit is provided in valueQuantity.unit - in case the value is provided using valueString - then the accompanying unit is delivered using this extension",
  "fhirVersion": "3.0.1",
  "kind": "complex-type",
  "abstract": false,
  "contextType": "resource",
  "context": [
    "Observation"
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Optional Extensions Element",
        "definition": "Provides the groups (could be mutliple) in which the individual results should be displayed; provided if configured for grouping for an observation of type LabResult",
        "max": "1",
        "base": {
          "path": "Element",
          "min": 0,
          "max": "*"
        },
        "constraint": [
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.id",
        "path": "Extension.id",
        "max": "0"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://medico-emr.net/stu3/sd/MXT-Observation-LabStringUnit-1"
      },
      {
        "id": "Extension.value[x]:valueString",
        "path": "Extension.valueString",
        "sliceName": "valueString",
        "definition": "Usually the unit is provided in valueQuantity.unit - in case the value is provided using valueString - then the accompanying unit is delivered using this extension",
        "min": 1,
        "type": [
          {
            "code": "string"
          }
        ]
      }
    ]
  }
}