Shared clinical supertypes — the MIF-compliant intermediate layer cardiology, health, and fitness extend
Clinical record subjects and diagnostic classification shapes
The subject-of-record for a clinical encounter, observation, or diagnosis — the FHIR Patient-shaped entity domain packs reference rather than re-minting their own subject type
A time-bound clinical interaction — the FHIR Encounter-shaped entity a clinical activity (a study, a procedure, a prescription) occurs within
Reference to the clinical-record-subject this encounter concerns
A measurement-or-assertion primitive about a clinical-record-subject — the FHIR Observation-shaped entity that is the single strongest cross-pack convergence in the clinical domain: health's own Observation reuse, cardiology's structured study/finding bundles, and fitness's device-sourced vital-sign readings are all specializations of this one shape
Reference to the clinical-record-subject this observation concerns
Imaging or acquisition modality, where applicable (cardiology extension)
Component measurements bundled within a structured study (cardiology extension)
A WHO ICD-11 stem-code or extension-code classification entry — the shape health's general diagnosis classification and cardiology's chapter-11-scoped circulatory disease types both instantiate
\b(FHIR Patient|patient record|subject of record)\b
\b(FHIR Encounter|clinical encounter|inpatient admission|outpatient visit)\b
\b(FHIR Observation|clinical observation|vital sign|lab result)\b
\b(ICD-11|diagnosis code|diagnostic classification)\b