HL7 Field Inspector

Paste an HL7 v2 message and inspect segments, fields, repetitions, components and subcomponents.

Local only · no uploads
Raw message Ctrl/Cmd + Enter · or drop a .hl7/.txt file
Click any row to inspect it. Arrow keys navigate the tree; ← → collapse and expand. Single local HTML file. Structural inspector with practical version-aware labels and syntax warnings; not a substitute for an interface-specific conformance profile.

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
Raw value
Interpretation
Hex