{
  "resourceType": "StructureDefinition",
  "id": "CA-eReC-Patient-Present-Location-EXT",
  "url": "http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-Patient-Present-Location-EXT",
  "name": "PatientPresentLocation",
  "title": "PatientPresentLocation",
  "status": "draft",
  "description": "Sometimes a referral needs to communicate where the patient is at the time of the referral (e.g., in Ward X of Hospital Y), which may be different from the patient's home address. To communicate this, use this extension, which references a Location resource.  Present location can be nested using Location.partOf to communicate locations with multiple levels, e.g., Location.partOf > Location for WardX > HospitalY.",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "ServiceRequest"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "definition": "Used to communicate the present location of the patient if it is different than the patient's home address."
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "max": "0"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-Patient-Present-Location-EXT"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-Location"
            ]
          }
        ]
      }
    ]
  }
}