Is my HL7 message uploaded?

No. Parsing stays in your browser. Nothing you paste is sent to a server. Prefer synthetic data before sharing screenshots.

Is this a certified interface engine?

No. It is an educational analyzer, not a certified interface engine or conformance tester. Use it to learn and troubleshoot, not as a production validator.

Free browser tool

HL7Message Analyzer.

Paste any HL7 v2 message, understand every field with validation hints, scrub PHI before sharing, import or export CSV and JSON, see what typically comes next, and draft a correct ACK — without a vendor toolkit.

Open HL7 Message Analyzer Worklist Admin FHIR Message Analyzer

What is the HL7 Message Analyzer?

HL7 v2 still carries orders, results, and patient updates across hospitals. The HL7 Message Analyzer is a free, client-side tool for radiology IT and interface analysts: decode a pipe-delimited ER7 message, inspect segments and fields, learn the conversation around it, and generate an ACK that echoes the right control ID. Export the Inspect table as CSV or JSON, or import those files (including JSON you edited). Nothing is uploaded — parsing stays in your browser.

See it in action

HL7 Message Analyzer Structure view showing the segment tree of an ORM^O01 radiology order — Structure view — the full segment tree when you need it.

HL7 Message Analyzer Respond panel showing a built ORR^O02 accept acknowledgment — Respond — build an ORR^O02 accept stub straight from the order.

Features

Paste raw HL7 v2 / ER7 — including MLLP-framed wire logs, stripped before parsing
Drill into segments, fields, and components with plain-language labels
Educational IHE RAD hints — empty control IDs, missing PID/accession, bad ACK echoes, cancel orders, MRG merge fields
Build AA, AE, or AR acknowledgments with the correct MSA-2 control ID echo
Generate order-response (ORR) and result (ORU) shells from an ORM — copy-ready stubs
Related conversation templates for ADT, ORM, ORU, SIU, and ACK, prefilled from your paste
Side-by-side Compare view for control-ID and PID mismatches
Batch picker for logs containing several MSH segments
Export visible Inspect rows as CSV or JSON
Import a CSV, JSON, or raw HL7 file back in — including JSON you edited in the table
One-click local PHI scrub of names, MRNs, accessions, and addresses
Original message panel always keeps your untouched paste — back to original anytime
Deep-link from an inspected order into the Worklist tool with accession context
Keep the PACS Admin tool one click away
Save local message snippets for quick reuse
Practice interface-fault challenges — bad ACK echo, ADT^A40 merge, ORM missing accession
Runs entirely client-side — nothing you paste is ever uploaded

Built for HL7 v2 interface work

HL7 v2 ER7 parseValidation + IHE RAD hintsACK AA · AE · ARORR / ORU stubsSide-by-side diffCSV / JSON import & exportBatch MSH splitRelated message templatesPHI scrubberWorklist deep-linkLocal-only processing

Questions

What is the HL7 Message Analyzer?: A free, client-side HL7 v2 / ER7 tool: paste a message, inspect segments and fields, import or export CSV and JSON, get validation and IHE RAD hints, scrub PHI locally, and build ACK, ORR, or ORU stubs.
Is my HL7 message uploaded?: No. Parsing stays in your browser. Nothing you paste is sent to a server. Prefer synthetic data before sharing screenshots.
Is this a certified interface engine?: No. It is an educational analyzer, not a certified interface engine or conformance tester. Use it to learn and troubleshoot, not as a production validator.

Ready to analyze a message?

Open the HL7 Message Analyzer, paste an HL7 v2 message, load a sample, or import CSV/JSON, and build an ACK in under a minute.

Open HL7 Message Analyzer

Educational tool. Not a certified interface engine. Prefer synthetic data — nothing you paste is sent to a server.