Overview
SIST EN ISO 12967-1:2021 / ISO 12967-1:2020 - Health informatics - Service architecture (HISA) - Part 1: Enterprise viewpoint provides a structured methodology and requirements for describing, planning and developing health information systems at the enterprise and cross‑organization level. The standard specifies an architectural approach that places common data and business logic in a dedicated middleware layer (the HISA middleware), distinct from individual applications and accessible via services across the whole information system. It supersedes the 2011 edition and aligns with the ISO/CEN health informatics work (ISO/TC 215, CEN/TC 251).
Key Topics and Requirements
- Enterprise viewpoint: Defines workflows, user activities and organizational perspectives (regional/inter‑enterprise, clinical, operational) that the middleware must support.
- Service-oriented middleware: Requires a middleware layer for common data and business logic, exposed through services to enable integration of legacy and new applications.
- Methodology and viewpoints: Prescribes a multi‑view approach (enterprise, information, computational) and iterative specification process for architecture development.
- Information requirements: Coverage of common attributes, extensibility, versioning, auditing and lifecycle handling for healthcare information.
- Workflows and use cases: Describes core workflows such as subject-of-care, healthcare information flow, activity management, resource management, user/authorization management, and classification/dictionary management.
- Conformance criteria: Defines conformance for specification documents and for middleware products claiming HISA compliance.
- Supporting material: Informative annexes cover ODP highlights, federative structure rationale, and cross‑domain interoperability considerations.
Practical Applications and Who Uses It
- Enterprise architects & CIOs: For designing scalable, interoperable enterprise health IT architectures and middleware strategies.
- System integrators & middleware vendors: To implement HISA‑compliant middleware that centralizes business logic and supports service access across applications.
- EHR/EMR vendors and application developers: To align product design with enterprise viewpoints and interoperability needs.
- Health regions and federated networks: For planning cross‑organization integration, shared services and regional data exchange.
- Project managers & standards officers: To define requirements, assess conformance and plan phased, iterative deployments.
Practical benefits include improved interoperability, separation of concerns (applications vs. shared services), consistent auditing/versioning, and better support for multi‑vendor, multi‑organization health ecosystems.
Related Standards
- ISO 12967 (HISA) family - other parts address information and computational viewpoints.
- References include ISO/HL7 10781 (as examples of functions that can support HISA use cases).
- Developed under ISO/TC 215 and aligned with CEN/TC 251 guidance.
Keywords: Health informatics, HISA, ISO 12967-1, service architecture, middleware, enterprise viewpoint, healthcare interoperability, health information systems, clinical workflows.
