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Version: v0.0.4

Function: alternateCodingSystemOf()

alternateCodingSystemOf(coded): CodingSystemInfo | undefined

Provenance of a coded element's alternate coding system (CWE.6 / CE.6). Returns undefined when the element claims no alternate system. Useful for dual-coded fields (e.g. a problem carrying both SNOMED CT and ICD-10), where assuming a single coding system would be unsafe.

Parameters​

coded​

CodedSystemFields

Returns​

CodingSystemInfo | undefined

Example​

import { alternateCodingSystemOf } from "@cosyte/hl7";
const alt = alternateCodingSystemOf(dg.code);
if (alt) console.log("also coded in", alt.name ?? alt.claimed);