{
  "description": "Enable data extraction from Clinical Data Sources (e.g EMRs) for Research Purposes",
  "_filename": "OperationDefinition-daf-extract-operation.json",
  "package_name": "hl7.fhir.us.daf",
  "date": "2016-07-24",
  "system": true,
  "publisher": null,
  "instance": false,
  "name": "Extract Data",
  "type": null,
  "experimental": null,
  "resourceType": "OperationDefinition",
  "title": null,
  "package_version": "1.6.0",
  "status": "draft",
  "id": "c3bc61ff-19d8-450d-a547-6bf294e620a4",
  "kind": "operation",
  "comment": "Pilots underway in PCORNet",
  "url": "http://hl7.org/fhir/us/daf/OperationDefinition/daf-extract-operation",
  "code": "extract-data",
  "base": {
    "reference": "OperationDefinition/daf-extract-operation"
  },
  "version": null,
  "parameter": [ {
    "max": "1",
    "min": 1,
    "use": "in",
    "name": "timereference",
    "type": "dateTime",
    "documentation": "This is the reference time based on which the extraction program will retrieve data for only those patients whose records have been created/updated after the reference time."
  }, {
    "max": "1",
    "min": 0,
    "use": "in",
    "name": "patient",
    "type": "Reference",
    "documentation": "When a Patient is specified, the extraction program needs to only extract the data for a specific patient.If not specified, the extraction program will evaluate all consented patient records based on the reference time to identify the ones that have changed and need to be extracted."
  }, {
    "max": "1",
    "min": 0,
    "use": "out",
    "name": "return",
    "type": "Bundle",
    "documentation": "The results of the extraction would provide the data for each patient whose data has been created/updated based on the referenceTime. This data will be in the form of a Bundle which has all the resources that are pertinent for each patient whose data has been extracted. "
  }, {
    "max": "1",
    "min": 0,
    "use": "out",
    "name": "issues",
    "type": "OperationOutcome",
    "documentation": "A list of hints and warnings about problems encountered while extracting the data. These might be show to the user as an advisory note. Note: if the extraction cannot be performed at all, then the operation should fail, and an OperationOutcome is returned directly with the failure, rather than using this parameter. "
  } ]
}