Oracle Health Millennium FHIR R4 behavior, fetched 2026-04-26 from the Cerner sandbox tenant ec2458f2. 176 element-level deviations from US Core 6.1, OAuth/SMART specifics, OperationOutcome examples, pagination behavior — every claim source-cited.
176 path-level rows mapped against US Core 6.1, with multi-patient evidence and source quotes from the public sandbox. Filterable by category — matches, missing, different, extension — and substring.
Cerner-flavored OAuth flow specifics, JWT alg, JWKS distribution, scopes format. OperationOutcome example responses for the most common error triggers your client will hit.
Build against this overlay without a Cerner Code Console application via Studio — same patients across vendors, Cerner-flavored at the wire.