{
  "resourceType": "StructureDefinition",
  "constrainedType": "Extension",
  "base": "http://hl7.org/fhir/StructureDefinition/Extension",
  "id": "spark391",
  "meta": {
    "versionId": "spark391",
    "lastUpdated": "2015-10-02T12:26:51.039+00:00"
  },
  "url": "http://hl7.org/fhir/StructureDefinition/valueset-systemRef",
  "name": "Where to find code system",
  "status": "draft",
  "date": "2015-09-22T03:47:23+00:00",
  "publisher": "HL7",
  "description": "The formal URI for the code system.  I.e. ValueSet.codeSystem.system (or its equivalent).",
  "fhirVersion": "1.0.1",
  "kind": "datatype",
  "abstract": false,
  "contextType": "resource",
  "context": [
    "ValueSet.compose.include"
  ],
  "snapshot": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Where to find code system",
        "definition": "The formal URI for the code system.  I.e. ValueSet.codeSystem.system (or its equivalent).",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Extension"
          }
        ],
        "isModifier": false
      }
    ]
  },
  "differential": {
    "element": [
      {
        "path": "Extension",
        "short": "Where to find code system",
        "definition": "The formal URI for the code system.  I.e. ValueSet.codeSystem.system (or its equivalent).",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Extension"
          }
        ],
        "isModifier": false
      },
      {
        "name": "extension",
        "path": "Extension.extension",
        "max": "0"
      },
      {
        "path": "Extension.url",
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "http://hl7.org/fhir/StructureDefinition/valueset-systemRef"
      },
      {
        "path": "Extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "uri"
          }
        ]
      }
    ]
  }
}