HL7 Parsing & Data Mapping Services
Precise HL7 v2 message parsing, field-level data mapping, clinical code translations, and HL7-to-FHIR transformation — built to preserve clinical data integrity through every transformation.
What We Do
Accurate HL7 parsing and data mapping is the foundation of every successful healthcare integration. We get it right so your clinical data flows correctly.
HL7 v2 Message Parsing
Accurate parsing of HL7 v2 pipe-delimited messages — MSH, PID, PV1, OBR, OBX, EVN, NK1, AL1, DG1, and all other standard segments. Handling of repeating fields, components, sub-components, and encoding characters.
Field-Level Data Mapping
Precise field-level mapping specifications between source and target systems — including data type conversions, null handling, default values, conditional logic, and cross-field derivations.
Clinical Code Translations
Code crosswalk tables and lookup services for ICD-9 to ICD-10, CPT, LOINC, SNOMED-CT, RxNorm, NDC, and other clinical code systems — ensuring clinical meaning is preserved through transformation.
HL7 v2 to FHIR Transformation
Bidirectional transformation between HL7 v2 messages and FHIR R4 resources — using HL7 v2-to-FHIR mapping guides, custom transformation logic, and FHIR validation to ensure output resource conformance.
How It Works
Message Analysis
We analyze your source HL7 messages or data structures, document all fields present, and identify data quality issues and edge cases.
Mapping Specification
We create detailed field-level mapping specifications — source field, target field, transformation logic, code translations, and null handling for every element.
Transformation Development
We implement the transformation logic in your integration engine (Mirth Connect, XSLT, custom code) and validate output against the target system's requirements.
Testing & Clinical Validation
We test transformations with real message samples, validate clinical data accuracy with subject matter experts, and document the mapping for long-term maintenance.
Why Choose Our Data Mapping Team
Accuracy You Can Trust
HL7 parsing errors and field mapping mistakes can corrupt clinical data or cause silent data loss. Our meticulous mapping process and clinical validation prevent these failures.
Complete Documentation
Every mapping we deliver includes a fully documented specification — field-by-field, with transformation rules, code translation tables, and edge case handling documented for future maintainers.
Integration Engine Agnostic
We implement data mapping in any integration engine or platform: Mirth Connect, Rhapsody, XSLT, Python, Java, .NET, or custom cloud-native pipelines.
Frequently Asked Questions
What is HL7 parsing and why is it difficult?
HL7 v2 parsing involves reading pipe-delimited messages and extracting individual segment fields, components, sub-components, and repeating elements according to the HL7 specification. The challenge is that every EHR vendor has their own 'flavor' of HL7 — using non-standard fields, unexpected values, and proprietary Z-segments. Correctly parsing and mapping HL7 from real-world EHR systems requires deep knowledge of both the standard and vendor-specific variations.
Can you help with HL7 v2 to FHIR transformation?
Yes. HL7 International publishes v2-to-FHIR mapping guides for many message types. We use these guides as a starting point and build transformation logic that produces valid, conformant FHIR R4 resources. We also handle the reverse direction — FHIR to HL7 v2 — for hybrid integration architectures.
Do you handle Z-segments and non-standard HL7 fields?
Absolutely. Z-segments (custom segments added by EHR vendors like Epic ZPD, ZPV, etc.) are extremely common in production HL7 environments. We map Z-segment content to the appropriate target fields, documenting the custom field definitions provided by the EHR vendor.
Ready to Map Your HL7 Data?
Our team has built thousands of HL7 data mappings across every message type and EHR system. Get a free consultation and see how we can help you transform your healthcare data accurately.
- Free 30-minute data mapping consultation
- HL7 message sample analysis
- NDA available upon request
- Response within 24 hours
Talk to an HL7 Data Mapping Expert
Share your HL7 parsing and mapping requirements and our team will respond within 24 hours.