I would like to know what could be the best practice -or way- for doing the following:
I have access to a database that store all application’s data as resources (Patient, Service Requests, Practioner, Organization, Specimen). And I need to use these records to construct OML Messages to integrate with HL7 V2 systems. So it would be like FHIR R4 to HL7 V2 conversion! Yes, Unfortunately.
So Should I bundle all needed resources for the OML message (in a Bundle resource), use Composition Resource or use Service request Resource with contained resources? I prefer to have a single JSON or XML so the conversion to HL7 would be easy.
Is there any real example to perform the order request through FHIR to HL7 Conversion?