I am currently working to standardize communication between a lab and clinic server. I am working on a basic workflow that returns a DiagnosticReport type FHIR resource from the clinic server. According to FHIR only references of Observations are passed as part of the DiagnosticReport and a new hit to the clinic server is to be made to fetch every actual Observation type FHIR resource. The question is that is there a way to make the Observation resources part of the DiagnosticReport resource and save the extra hits?
You can, by using contained resources. But there's a much better option - use the _include option to retrieve all the observations with the DiagnosticReport in the first place