{
  "resourceType": "StructureDefinition",
  "id": "valueset-reference",
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "vocab"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 1
    }
  ],
  "url": "http://hl7.org/fhir/StructureDefinition/valueset-reference",
  "version": "4.6.0",
  "name": "reference",
  "status": "draft",
  "date": "2020-12-28T05:55:11+00:00",
  "publisher": "HL7",
  "description": "A logical reference (e.g. a reference to ValueSet.url) that identifies the value set/version that identifies the set of possible coded values this coding was chosen from or constrained by.",
  "fhirVersion": "4.6.0",
  "mapping": [
    {
      "identity": "v2",
      "uri": "http://hl7.org/v2",
      "name": "HL7 v2 Mapping"
    },
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "Coding"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Url of Value set the code was chosen from",
        "definition": "A logical reference (e.g. a reference to ValueSet.url) that identifies the value set/version that identifies the set of possible coded values this coding was chosen from or constrained by.",
        "comment": "If this extension is used with an [extensible binding](terminologies.html#extensible), and the concept comes from outside the bound valueset, the value set SHALL be different from the bound valueset.",
        "min": 0,
        "max": "1",
        "isModifier": false,
        "mapping": [
          {
            "identity": "v2",
            "map": "CWE."
          },
          {
            "identity": "rim",
            "map": "CD.valueSet/CD.valueSetVersion"
          }
        ]
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "max": "0"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://hl7.org/fhir/StructureDefinition/valueset-reference"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "uri"
          }
        ]
      }
    ]
  }
}