HL7 Viewer

The HL7 Viewer parses raw HL7 v2 messages, extracting segments (MSH, PID, PV1, OBX, and others) and presenting a structured view of fields and components. It handles common delimiter variations and supports message fragments used in ADT and ORM workflows.
Conceptually, the tool tokenizes input by segment lines (CR), then splits fields by the field delimiter, iterates through segments to build a hierarchical representation, and can optionally mask sensitive identifiers for safe sharing.
Who benefits: healthcare IT engineers, EHR integrators, QA analysts, and data engineers validating message routing, data mappings, and interface contracts. The unique value comes from a parser-first approach with predictable JSON output, basic validation, and version-aware handling.
Core features include segment discovery, field-level access, error reporting for malformed messages, and export options for downstream testing pipelines. Use cases include validating ADT workflows, testing HL7 interfaces in staging environments, and auditing exchanged data to ensure conformance with integration contracts. The tool supports common HL7 v2 flavors (2.3–2.5) and can surface counts of repeating fields for analysis. It delivers a compact, machine-friendly representation suitable for automated QA and data validation pipelines.