{
  "resourceType": "StructureDefinition",
  "meta": {
    "lastUpdated": "2017-06-16T16:12:27.848+00:00"
  },
  "url": "https://purl.org/elab/fhir/StructureDefinition/Unit",
  "name": "Unit",
  "status": "draft",
  "date": "2017-06-16T15:47:40",
  "description": "Unit",
  "fhirVersion": "3.0.0",
  "kind": "complex-type",
  "abstract": false,
  "contextType": "resource",
  "context": [
    "Basic"
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "https://purl.org/elab/fhir/StructureDefinition/Unit"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "short": "Unit",
        "definition": "Unit",
        "min": 1,
        "type": [
          {
            "code": "code"
          },
          {
            "code": "string"
          }
        ],
        "binding": {
          "strength": "preferred",
          "valueSetReference": {
            "reference": "http://hl7.org/fhir/ValueSet/ucum-units"
          }
        }
      }
    ]
  }
}