A use case scenarios for FHIR-based Terminology Change Set Exchange is described below and illustrated in a sequence diagram.

Terminology Change Set Exchange Use Case

In this example, a terminology publishing organization is making an incremental change to its extension of SNOMED CT by adding a new extended concept. To enable data exchange with a close trading partner that makes use of this extended concept, this publishing organization shares a Terminology Change Set with a the trading partner (the Terminology Consumer identified in the steps below).

1. Authoring Environment: Terminologist creates a new concept to extend SNOMED CT, exports it as a Terminology Change Set, and posts it to the FHIR server
2. Terminology Consumer: Requests the Terminology Change Set from the FHIR server
3. FHIR Server: Delivers the FHIR Resource Bundle requested
4. Terminology Consumer: Updates the Local Terminology Database with the contents of the Terminology Change Set retrieved