API ReferencevariablesVariable: USAGE\_CODESVersion: v0.0.4On this pageVariable: USAGE_CODES const USAGE_CODES: readonly UsageCode[] The frozen set of valid UsageCodes, for runtime validation and introspection. USAGE_CODES.R === "R". Example import { USAGE_CODES } from "@cosyte/hl7";USAGE_CODES.includes("R" as const); // true