What does the HL7 Compare Tool do?
It compares two HL7 messages and highlights differences at the segment, field, component, and repetition level.
HL7 Compare Tool
Segment, field, component, and repetition-aware HL7 comparison.
Last compared 11:58:25 pm
HL7 Compare FAQ
Why compare HL7 messages?
Comparing messages helps identify mapping changes, interface issues, and unexpected differences during testing and troubleshooting.
Does it compare segments only?
- Segments
- Fields
- Components
- Subcomponents
- Repetitions
Can I compare ADT messages?
Yes. Any HL7 v2 message can be compared.
Are messages uploaded?
No. Everything happens locally within your browser.
Can I ignore fields?
Yes. Specific fields can be excluded from comparison to focus on meaningful changes.
Is this useful for interface testing?
Yes. It is useful for regression testing, interface upgrades, vendor testing, and troubleshooting.
Is the Compare Tool free?
Yes. No account is required.