Encounter.diagnosis is currently marked as Must Support, but this causes us issues since our system has diagnoses, but we don't support it in the Encounter API due to versioning concerns. Specifically, in our EHR, the Encounter.diagnosis.use and Encounter.diagnosis.rank are managed as attributes of the condition (not the Encounter). Thus, changes to the condition don't update the encounter's meta.lastUpdated date or versionId.

Proposal: remove diagnosis, diagnosis.condition and diagnosis.rank as Must Support