{
  "resourceType": "StructureDefinition",
  "constrainedType": "Extension",
  "base": "http://hl7.org/fhir/StructureDefinition/Extension",
  "id": "spark376",
  "meta": {
    "versionId": "spark376",
    "lastUpdated": "2015-10-02T12:26:05.653+00:00"
  },
  "url": "http://hl7.org/fhir/StructureDefinition/openEHR-exposureDate",
  "name": "Date(/time) of first exposure to Substance",
  "status": "draft",
  "date": "2014-10-09",
  "publisher": "Health Level Seven, Inc / openEHR project",
  "contact": [
    {
      "telecom": [
        {
          "system": "other",
          "value": "http://hl7.org"
        }
      ]
    }
  ],
  "description": "Record of the date and/or time of the first exposure to the Substance for this Reaction Event.",
  "fhirVersion": "1.0.1",
  "kind": "datatype",
  "abstract": false,
  "contextType": "resource",
  "context": [
    "AllergyIntolerance.reaction"
  ],
  "snapshot": {
    "element": [
      {
        "comments": "Exposure can be more complicated by more than one exposure events leading to a reaction. Further details about the nature of the exposure can be provided in additional extensions, or as text in the Exposure Description extension.",
        "id": "Extension",
        "path": "Extension",
        "short": "Date(/time) of first exposure to Substance",
        "definition": "Record of the date and/or time of the first exposure to the Substance for this Reaction Event.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Extension"
          }
        ]
      }
    ]
  },
  "differential": {
    "element": [
      {
        "comments": "Exposure can be more complicated by more than one exposure events leading to a reaction. Further details about the nature of the exposure can be provided in additional extensions, or as text in the Exposure Description extension.",
        "path": "Extension",
        "short": "Date(/time) of first exposure to Substance",
        "definition": "Record of the date and/or time of the first exposure to the Substance for this Reaction Event.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "name": "extension",
        "path": "Extension.extension",
        "max": "0"
      },
      {
        "path": "Extension.url",
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "http://hl7.org/fhir/StructureDefinition/openEHR-exposureDate"
      },
      {
        "path": "Extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "dateTime"
          }
        ]
      }
    ]
  }
}