HIMSS Word of the Day #068: HL7 Version 2 (HL7 V2)
HL7 Version 2 (HL7 V2) is the widely implemented healthcare messaging standard that carries admissions, orders, results, and other events between clinical systems. This post explains how V2 messages, segments, and trigger events work, why the standard remains so common, its weaknesses, and how it compares with FHIR.