Yes, it is definitely possible (and has been done) to implement standards like HL7 and profiles like IHE in solutions aligned with the architectural guidance provided by the Connected Health Framework.   In fact, promoting the service-oriented approach, platform independence, and use of standards, is one of the main principles of the CHF ...

Your best bet would be the HL7 Reference Information Model (RIM) available as part of the HL7 v3 standards. It makes sense to use the RIM as the starting point since a lot of work has been done to define popular concepts such as patient, encounter, medication, observation... The RIM is designed to accomodate information elements that are ...