HL7v2 Validator

HL7v2 Validator analyzes HL7 version 2 messages to ensure syntactic correctness, segment presence, and conformance to chosen profiles. It accepts a raw HL7 message string, detects the HL7 version from the MSH segment, and validates required segments (e.g., MSH, EVN, PID, PV1) based on the selected profile. The tool reports structural issues such as missing fields, incorrect field separators, and invalid data types, enabling rapid feedback during integration development. It supports common dialects (2.3/2.4/2.5) and can flag nonconforming repetitions or optional segments.
The validator uses a parser, tokenization by HL7 separators, and profile-driven rules to distinguish mandatory versus optional components. It produces a structured, machine-readable report that highlights exact locations (e.g., MSH-9.1, PID-3) and suggests concrete corrections. It is optimized for automation and CI pipelines, allowing batch validation of multiple messages and export of results to JSON or CSV.
Typical use cases include interface development between EHRs and LIS, healthcare middleware testing, and QA checks before message deployment. Unique value lies in automatic version detection, explicit location-based reporting, and support for multiple HL7 dialects with configurable profiles. Core features include syntactic checks, semantic datatype validation, segment-count verification, and exportable reports; optional features include custom profiles and cross-segment rules. Use cases span development, testing, and pre-production validation across hospital IT environments.