Request clinical documentation via Da Vinci CDex task-based exchange
domain: hl7.org/fhir/us/davinci-cdex · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Create a Task resource conforming to the CDex Task Data Request profile, specifying the requested data type in Task.input using a coded or Attachment-based format
POST the Task to the data source's FHIR server and record the returned Task logical ID
Poll Task.status periodically or subscribe to Task updates to detect when the data source has fulfilled the request
When Task.status transitions to 'completed', retrieve the referenced output resources from Task.output
Validate received documents or FHIR resources against the expected profile before storing them in the requesting system
Known gotchas
Task.requester and Task.owner must reference actual FHIR Organization or Practitioner resources; using display-only references without logical IDs prevents the data source from routing notifications back
CDex defines specific codes for Task.code to distinguish attachment requests from structured data requests; using a generic task code causes the responder to process the request incorrectly
If the data source uses a Subscription to notify rather than polling, the requesting system must expose a rest-hook endpoint reachable from the data source's network
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