Terminology and identifiers
Mandatory foundations where scoped
| Standard | Primary-care sharing contribution |
|---|---|
| NHS Number for General Practice (ISB 0149-01) | Unambiguous patient identification and matching in GP systems and exchanges. |
| SNOMED CT (SCCI0034) | Common clinical meaning across structured records and direct-care settings. |
| NHS dictionary of medicines and devices (SCCI0052) | Standard identifiers and descriptions for electronic medicines information exchanged for direct care. |
| UK Core FHIR R4 Governance (DAPB4020) | Governance for consistent UK Core profiling when sharing across organisational and system boundaries. |
Evidence: SRC-016, SRC-017, SRC-018, SRC-022.
Conformance is end-to-end
Sending a valid code is insufficient if the receiving workflow:
- uses the wrong patient or cannot resolve identity conflicts;
- loses display terms, units, effective dates, provenance or negation;
- silently maps an unsupported code;
- confuses current, historical, intended and stopped medicines;
- cannot surface uncertainty or correct the source;
- relies on a code-system or profile version outside the agreed contract.
Record code system, edition/version, profile, binding strength, fallback behaviour, validation results and migration plan in the flow’s standards decision.