Open-source parsers for healthcare's data standards.

import { parseHL7 } from "@cosyte/hl7";

// A synthetic ADT^A01 admit. HL7 v2 ends every segment with a carriage return.
const raw =
  "MSH|^~\\&|EPIC|MAIN|LIS|REF|20260419101500||ADT^A01^ADT_A01|MSG00001|P|2.5\r" +
  "EVN|A01|20260419101500\r" +
  "PID|1||MRN12345^^^HOSP^MR||Doe^John^Q||19800115|M|||123 Main St^^Boston^MA^02101||^PRN^PH^^^617^5551212\r" +
  "PV1|1|I|ICU^101^A^HOSP|||||ATTEND^Smith^Jane^^^^MD|||||||||||VISIT001\r";

const msg = parseHL7(raw);

console.log("Patient record number:", msg.patient?.mrn);
console.log("Full name:", msg.patient?.fullName);
console.log("Date of birth:", msg.patient?.dateOfBirth?.raw);
console.log("Precision:", msg.patient?.dateOfBirth?.precision);
console.log("Message type:", msg.meta.type);
console.log("Sent at:", msg.meta.timestamp?.raw);
console.log("Ward:", msg.visit?.location?.pointOfCare);