{
  "resourceType": "StructureDefinition",
  "id": "71ce8049-a3f6-48d6-a37d-bdfa5132aeac",
  "meta": {
    "versionId": "1",
    "lastUpdated": "2021-08-31T17:28:29.278+00:00",
    "tag": [
      {
        "system": "https://smilecdr.com/fhir/NamingSystem/tags",
        "code": "validation_failed_with_warning",
        "display": "Validation Failed with Warning"
      }
    ]
  },
  "url": "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-preferredTerminologyServer",
  "version": "2.8.0",
  "name": "PreferredTerminologyServer",
  "title": "Preferred terminology server",
  "status": "active",
  "experimental": false,
  "date": "2014-04-21",
  "publisher": "HL7 International - FHIR Infrastructure Work Group",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/Special/committees/fiwg"
        }
      ]
    }
  ],
  "description": "Indicates the terminology server(s) that are known to be capable of returning and potentially expanding the value set(s) associated with the whole questionnaire or a particular group or question within the questionnaire (depending on where the extension appears).  If a full URL is not provided AND the requested query is a terminology operation (e.g. $lookup or $expand) the client SHOULD execute the operation against the preferredTerminologyServer rather than the local repository.",
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code": "001"
        }
      ]
    }
  ],
  "purpose": "Not all terminology servers will necessarily have access to the codes.  If a questionnaire points to value sets, the rendering engine needs to know where to get a current expansion.",
  "fhirVersion": "4.0.1",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "Questionnaire"
    },
    {
      "type": "element",
      "expression": "Questionnaire.item"
    },
    {
      "type": "element",
      "expression": "Questionnaire.item.item"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Preferred terminology server",
        "definition": "Indicates the terminology server(s) that are known to be capable of returning and potentially expanding the value set(s) associated with the whole questionnaire or a particular group or question within the questionnaire (depending on where the extension appears).  If a full URL is not provided AND the requested query is a terminology operation (e.g. $lookup or $expand) the client SHOULD execute the operation against the preferredTerminologyServer rather than the local repository.",
        "comment": "This includes those referenced by answerValueSet as well as the unitValueSet extension.",
        "min": 0,
        "max": "*"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-preferredTerminologyServer"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "type": [
          {
            "code": "url"
          }
        ]
      }
    ]
  }
}