{
  "resourceType": "StructureDefinition",
  "id": "observation-replaces",
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "oo"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 1
    }
  ],
  "url": "http://hl7.org/fhir/StructureDefinition/observation-replaces",
  "version": "4.6.0",
  "name": "replaces",
  "title": "Replaces",
  "status": "draft",
  "date": "2015-03-02",
  "publisher": "Health Level Seven, Inc. - OO WG",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/special/committees/orders"
        }
      ]
    }
  ],
  "description": "This observation replaces a previous observation (i.e. a revised value).",
  "fhirVersion": "4.6.0",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "Observation"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Replaces referenced Observation",
        "definition": "This observation replaces a previous observation (i.e. a revised value).",
        "comment": "This is an alternative to updating the Observation with a new version with status = 'amended'or 'corrected'.  The target observation is now obsolete.",
        "min": 0,
        "max": "*"
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "max": "0"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://hl7.org/fhir/StructureDefinition/observation-replaces"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://hl7.org/fhir/StructureDefinition/Observation"
            ]
          }
        ]
      }
    ]
  }
}