What Is FHIR? A Healthcare IT Guide
A practical intro to FHIR for healthcare IT: what resources are, how R4 works, how it compares to HL7 v2, and how to validate resources before sending.
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All articles about hl7: 20 practical guides and tutorials from our free, privacy-first online tools.
HL7 ACK Codes Explained: AA, AE, and AR (MSA-1)
What HL7 ACK codes AA, AE, and AR mean in MSA-1, how they differ from CA/CE/CR, and how a receiver decides which acknowledgment to send. With examples.
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HL7 v2.x Message Validation: A Practical Guide
Learn how to validate HL7 v2.x messages, detect structural errors, troubleshoot delimiter problems, and test interface logic before production deployment.
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Building Radiology Worklists from HL7 ORM Messages
Learn how to turn HL7 ORM orders into reliable radiology worklist entries with field mappings, status handling, validation steps, and troubleshooting guidance.
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DICOM Modality Worklist vs HL7 ORM Messages
Compare DICOM Modality Worklist and HL7 ORM messages in radiology workflows, including scheduling, order entry, and scanner integration.
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HL7 ADT to FHIR: Patient and Encounter Mapping
Learn how to map HL7 ADT messages to FHIR Patient and Encounter resources with field-level guidance for PID, PV1, identifiers, locations, status, and testing.
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HL7 Conformance Profiles and Site Validation
Practical guide to HL7 conformance profiles and site validation: formalize local rules, combine baseline checks with profile review, and cut risk.
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HL7 ORU to FHIR: DiagnosticReport and Observation
Map HL7 ORU result messages to FHIR DiagnosticReport and Observation resources with guidance for OBR, OBX, value types, status handling, and validation.
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HL7 v2 JSON for FHIR Ingestion Pipelines
Learn when HL7-v2-to-JSON should sit in front of FHIR ingestion pipelines, what the JSON must preserve, and how to avoid data loss during modernization.
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Mapping HL7 PID and PV1 Segments to JSON for ADT Pipelines
Learn how to map HL7 PID and PV1 segments to JSON without losing identifiers, visit context, repetitions, or null semantics in ADT pipelines.
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Validating HL7 v2 with Custom Z Segments
Learn how to validate HL7 v2 messages with custom Z segments, covering baseline HL7 checks, site-specific rules, governance, and safe validation workflows.
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Converting HL7 v2.x Messages to JSON: Developer Guide
Learn how to convert HL7 v2.x messages to JSON with simplified or HAPI-style output, covering field mapping, escape sequences, and integration patterns.
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