Healthcare Interoperability Software: FHIR, HL7 and ABDM Integration

What interoperability software does

• Receives, transforms and routes messages between HIS, EMR, LIS, RIS/PACS and pharmacy systems
• Supports HL7 v2 messages (ADT, orders, results) still used by most lab and radiology equipment
• Exposes FHIR REST APIs for modern apps, patient portals and ABDM exchange
• Handles DICOM and worklists between modalities and PACS
• Maps codes and terminologies such as SNOMED CT, LOINC and ICD across systems
• Monitors interfaces, queues failed messages and alerts IT staff
• Maintains a master patient index to match the same patient across systems

ABDM integration in India

Under the Ayushman Bharat Digital Mission, facilities and software can register on the Health Facility Registry and the Healthcare Professionals Registry, create or verify patients' ABHA numbers, and link records such as prescriptions, lab reports and discharge summaries. Those records are shared as FHIR-based health data only with the patient's consent through the ABDM consent framework. Software must pass ABDM sandbox testing before going live on the production environment. When buying a HIS or integration layer, ask which ABDM milestones the vendor has completed and whether it can act as a health information provider, a health information user, or both.

HL7 interface engine vs FHIR API platform

An HL7 interface engine is the traditional hub. It listens for messages from many systems, transforms them, and routes them onward. It suits hospitals with lab analysers, RIS and older software. A FHIR API platform stores or exposes data as FHIR resources through REST APIs, which suits mobile apps, patient portals, analytics and ABDM. Many modern platforms combine both. A health information exchange goes further by sharing data between separate organisations, as ABDM does at national scale. Choose based on what you need to connect today and what you expect to build next.

How to choose an integration platform

• List every system and device to connect, with the protocol each one supports
• Confirm support for HL7 v2, FHIR R4, DICOM and any ABDM-specific FHIR profiles you need
• Check the tools for building mappings, and whether your own IT team can maintain them
• Ask about monitoring dashboards, retry logic and message audit logs
• Review security: encryption, access control, consent handling and DPDP Act obligations
• Decide between cloud and on-premise deployment, considering where your data needs to reside
• Check vendor experience with the specific Indian HIS and lab systems you run

Implementation tips

Start with the interfaces that cause the most rework, usually lab orders and results between the HIS and LIS, followed by radiology. Agree on a single patient identifier across systems (the UHID), and plan how ABHA numbers will be stored alongside it. Test with real sample messages from each machine and system, because vendors often implement HL7 slightly differently. Put interface monitoring in the hands of named IT staff. Document every mapping so changes during a HIS upgrade do not silently break results delivery.