I am proposing within IHE that they reflect these FMM to the cover page of the IHE Profile so that the reader of the IHE Profile supplement understands the stability and readiness for use evaluation.
These FMM evaluations are only a construct for the STU and "Trial Implementation" phases. The FHIR Resources used must go to Normative, before the IHE Profile can go "Final Text".
So for example PDQm is based on Bundle, OperationOutcome, and Patient. All of which are at FMM level 5. So the title page of PDQm looks like:
Where as MHD is based on a broader set of FHIR STU3 defined resources -- DocumentReference 3, DocumentManifest 2, List 1, Patient 5, Practitioner 3, OperationOutcome 5, and Bundle 5. FHIR Maturity Level (FMM) range 1-5