New Zealand Activities HL 7 New Zealand FHIR

New Zealand Activities HL 7 New Zealand FHIR Validate-Code Operations SNOMED on FHIR Meeting Vancouver Oct 17, 2018 Peter Jordan, Chair HL 7 New Zealand

The Issue At Hand… • Code System based validation – “Validate that a coded value is in the code system” • Assume… – SNOMED CT Versioned Edition Supplied in the version parameter (and available on Terminology Server) – Language – assume matches Language Ref. Set on Server • Basic Use Cases – sufficient to highlight fundamental issues… Ø Boolean Result – is that sufficient? Ø n. b. Normative operation in R 4 Ø Constrain Result to code value only? Ø Add a (coded) Display Result Parameter? (valid, absent, unknown, unmatched, invalid…) Page 2

CODE / DISPLAY Invalid SCTID No Term Unrecognised SCTID No Term RESULT False Valid SCTID No Term True Invalid SCT Code Valid SCT Term False Valid SCTID Valid SCT Term (synonym) True Valid SCTID Invalid SCT Term (case) Valid SCTID Unrecognised SCT Term Valid SCTID Term for a different SCTID Valid SCT Term (preferred) Unrecognised SCTID Page 3 False MESSAGE The code value passed is invalid The code value passed is unknown Preferred Term The code value passed is invalid ? ? ? Preferred Term The display value passed violates case significance rule Preferred Term The display value passed is unknown Preferred Term The code and display values passed do not match ? ? ? True False DISPLAY Preferred Term The code and display values