{
  "resourceType": "StructureDefinition",
  "meta": {
    "lastUpdated": "2019-03-12T19:13:42.7179234+00:00"
  },
  "url": "http://ehealthontario.ca/fhir/StructureDefinition/ca-on-lab-ext-obs-sub-id",
  "name": "observation-subID",
  "status": "draft",
  "date": "2019-03-12T19:13:42.5300007+00:00",
  "description": "In OLIS, a test result or observation is uniquely identified within a test request by Observation Identifier, Observation Sub-ID, and Test Result Release Date/Time .\r\nUse this field to distinguish between multiple rsults with the same observation ID associated with one obseravation, for example three occult blood test results reported under the same test result code, or an initial result accompanied by a supplemental result that does not replace the initial result.",
  "purpose": "To distinguish between multiple rsults with the same observation ID associated with one obseravation",
  "fhirVersion": "3.0.1",
  "kind": "complex-type",
  "abstract": false,
  "contextType": "resource",
  "context": [
    "Observation"
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "max": "1",
        "mustSupport": false,
        "isModifier": false
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://ehealthontario.ca/fhir/StructureDefinition/ca-on-lab-ext-obs-sub-id"
      },
      {
        "id": "Extension.value[x]:valueString",
        "path": "Extension.valueString",
        "sliceName": "valueString",
        "min": 1,
        "type": [
          {
            "code": "string"
          }
        ],
        "mustSupport": true
      }
    ]
  }
}