{
  "resourceType": "StructureDefinition",
  "id": "4745ca9d-825c-46e7-bac7-9a1e1a10cfce",
  "meta": {
    "lastUpdated": "2022-01-12T04:29:35.896+00:00"
  },
  "url": "http://ehealthontario.ca/fhir/StructureDefinition/ca-on-lab-ext-sort-key",
  "name": "SortKey",
  "status": "active",
  "date": "2022-01-12T04:28:00.3301862+00:00",
  "description": "Sort key values allow laboratories to suggest the sequence of test requests and observations within a single order or test request to organize the display of the patient report by other external systems (e.g., a practitioner’s electronic medical record system).",
  "purpose": "To allow laboratories to suggest the sequence of test requests and observations.",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "ServiceRequest"
    },
    {
      "type": "element",
      "expression": "Observation"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "max": "1",
        "isModifier": false
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://ehealthontario.ca/fhir/StructureDefinition/ca-on-lab-ext-sort-key"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "slicing": {
          "discriminator": [
            {
              "type": "type",
              "path": "$this"
            }
          ]
        },
        "type": [
          {
            "code": "string"
          }
        ]
      }
    ]
  }
}