{
  "resourceType": "StructureDefinition",
  "meta": {
    "lastUpdated": "2021-02-09T12:09:40.734+00:00"
  },
  "url": "http://example.org/fhir/StructureDefinition/SearchParameter",
  "name": "SearchParameter",
  "status": "draft",
  "description": "used to capture paramters to be used in a EPIC search",
  "fhirVersion": "4.0.1",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "CommunicationRequest"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://example.org/fhir/StructureDefinition/SearchParameter"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "type": [
          {
            "code": "Coding"
          }
        ]
      },
      {
        "id": "Extension.value[x].system",
        "path": "Extension.value[x].system",
        "fixedUri": "http://hl7.org/fhir/resource-types"
      },
      {
        "id": "Extension.value[x].version",
        "path": "Extension.value[x].version",
        "max": "0"
      },
      {
        "id": "Extension.value[x].code",
        "path": "Extension.value[x].code",
        "binding": {
          "strength": "required",
          "description": "fhir resource types",
          "valueSet": "http://hl7.org/fhir/ValueSet/resource-types"
        }
      },
      {
        "id": "Extension.value[x].display",
        "path": "Extension.value[x].display",
        "max": "0"
      },
      {
        "id": "Extension.value[x].userSelected",
        "path": "Extension.value[x].userSelected",
        "max": "0"
      }
    ]
  }
}