Achieving Healthcare Data Interoperability with FHIR and HL7 v2

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This article introduces solutions for linking medical information systems using FHIR (Fast Healthcare Interoperability Resources) and HL7 v2. FHIR is an open standard from HL7 that enables the exchange of health data using modern web technologies like REST and JSON, by describing medical information in modular resources such as Patient or Observation. This makes connecting healthcare systems faster and easier than older approaches. FHIR plays a critical role in German healthcare IT. Many applications within the Telematics Infrastructure—such as electronic patient records (ePA) and e-prescriptions (E-Rezept)—are based on FHIR, and the ISiK standard for hospital interoperability also relies on FHIR-based interfaces. The company offers comprehensive services beyond mere development. These include selecting optimal FHIR resources and profiles based on requirements analysis, developing interfaces like REST APIs, and handling integration/migration tasks that involve data translation between HL7 v2, proprietary formats, and FHIR. They ensure compliance from both a medical device software perspective (ISO 13485) and information security standpoint (ISO 27001). Project references include ORIKO, the first DiGA for adults with ADHD, and INTEGRATE-ATMP, a telemedicine platform for gene therapies, demonstrating successful integration with major German healthcare systems.