Core Clinical Messaging

HL7 v2 & v3 Healthcare Integration Architecture

Health Level Seven (HL7) remains the backbone of hospital operational communications. Explore how our interface engines parse, transform, and route mission-critical clinical message streams without packet loss.

Understanding HL7 Message Architecture

HL7 v2 uses delimited text messages composed of segments (e.g., MSH, PID, PV1, OBR, OBX). Each segment contains fields separated by the pipe character (|). A patient admission (ADT^A01) updates downstream clinical systems in real time.

MSH|^~\&|HIS|HOSPITAL|LAB|MEDISOFTS|20260907120000||ADT^A01|MSG0001|P|2.5
EVN|A01|20260907120000
PID|1||MRN98241^^^HOSP||Sterling^Eleanor||19840614|F|||123 Healthcare Blvd^^City^CA^94105
PV1|1|I|WARD-4^ROOM-12^BED-1||||12345^Smith^John^Dr

Reliability Safeguards in Our HL7 Gateways

Minimal Lower Layer Protocol (MLLP) Framing

Ensuring strict TCP byte framing with Start Block (0x0B) and End Block (0x1C 0x0D) envelopes over TLS encrypted sockets.

Guaranteed Delivery with Application ACKs

Strict acknowledgment handling (AA, AE, AR) with persistent queue replays that ensure zero data loss during upstream network disconnects.