HL7 v2 Viewer - Healthcare Message Parser

View and parse HL7 v2.x healthcare messages. Navigate segments, fields, and components. Browser-based, HIPAA-friendly, works offline.

HL7 Message

Parsed Structure

Parse an HL7 message to see its structure

Segment Reference

Header/Control:
MSH - Message Header
MSA - Acknowledgment
EVN - Event Type

Patient:
PID - Patient ID
PV1 - Patient Visit
NK1 - Next of Kin

Clinical:
OBR - Observation Request
OBX - Observation Result
DG1 - Diagnosis

Orders:
ORC - Common Order
RXA - Pharmacy Admin
SCH - Schedule Activity

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Frequently Asked Questions

HL7 (Health Level Seven) version 2.x is the most widely used healthcare data exchange standard. It's used for patient records, lab results, clinical orders, and administrative data between healthcare systems.

All HL7 v2.x versions (2.1 through 2.8.2). The parser handles standard pipe-delimited format with configurable field separators defined in MSH segment.

All HL7 message types: ADT (admissions), ORM (orders), ORU (results), SIU (scheduling), MDM (documents), DFT (financial), and hundreds more.

Yes. All processing happens locally in your browser. No data is transmitted to any server. This makes it suitable for viewing PHI in compliance with HIPAA requirements.

Each segment is shown with its 3-letter code (MSH, PID, OBX, etc.). Fields are numbered and can be expanded to show components and subcomponents.

HL7 fields can contain multiple components (separated by ^) and subcomponents (separated by &). The viewer shows all levels of this hierarchy.

Yes. Use the search box to find specific values, segment types, or field contents. Matches are highlighted in the tree view.

Common segments: MSH (header), PID (patient ID), PV1 (visit), OBR (observation request), OBX (observation result), NK1 (next of kin), DG1 (diagnosis).

The viewer parses and displays messages but doesn't validate against specific schemas. For conformance testing, use dedicated HL7 validation tools.

The viewer is read-only for safety. You can copy any field value. For editing HL7 messages, use specialized healthcare integration tools.

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