HL7 Field Inspector

Raw message Ctrl/Cmd + Enter · or drop a .hl7/.txt file · press / to search

Compare two HL7 messages

This is deliberately separate from the normal Inspector. Paste a known-good message and a changed message to see field-level differences; unchanged fields are hidden by default.

Message A

Message B

Hide unchanged fields

De-identify an HL7 message

Create a troubleshooting copy with common identifiers replaced or removed, then review changes and uncovered fields. Everything runs locally in this browser.

Original message

De-identified output Not generated yet

What to de-identify

Patient, order & specimen identifiersMRNs, names, addresses, phones, account/visit IDs, order/accession numbers, specimen IDs and related identifiers. Relatives, guarantors & insured personNext-of-kin, guarantor and insured-party identifying fields. Clinician/provider identitiesProvider IDs and names in PV1, ORC, OBR, OBX, DG1, PD1 and EVN. Shift dates/timesShifts supported full dates, including date-valued observations, by one session offset. Partial or invalid dates are flagged for review. Redact clinical free textClears NTE comments, OBR clinical text and text-style OBX-5 values that may contain names or narrative PHI. Remove embedded data / referencesClears OBX-5 when the value type is ED or RP, including embedded PDFs and external document references.

Reuse replacements and date shift across messages Session kept in memory until you start a new one or close this page.

Review the output

Show fields

Before values contain original information. Uncovered fields and retained composite parts need your review; a changed field is not a guarantee that all identifying information was removed.

Field	Before	After	Review / action

De-identification is best-effort, not a compliance certification. Free-text, custom Z-segments and locally defined fields can contain identifiers the generic HL7 dictionary cannot recognise; review the output before sharing it.

How this might look in a PMS

A generic PMS-style view of the report content in your message. Explore each order separately, with message checks to explain missing or uncertain details. This preview is illustrative only and does not emulate a real PMS.

HL7 result to preview

Generic PMS preview

Message in batch

Message checks

Build a preview to check the message and view its report content.

Possible report display Generic layout

The report text reconstructed from OBR / OBX / NTE will appear here.

Fields used in this order Useful when comparing a working and failing report

No message analysed yet.

About this preview One generic PMS view

This preview is illustrative only. It does not emulate a real PMS and should not be used to determine how a production clinical system will process a message. Actual display, import, patient matching, routing and notifications depend on the receiving system and its configuration. Message checks describe the supplied HL7; they do not predict acceptance by a PMS or provide clinical decision support.