SIST EN ISO 12967-3:2021 PDF

Overview

EN ISO 12967-3:2020 - Health informatics: Service Architecture (HISA) - Part 3: Computational viewpoint specifies the computational model that a healthcare service architecture must implement to provide an integrated interface to common enterprise information and support core healthcare business processes. The standard is technology‑agnostic (no assumptions about physical technologies or tools), yet formal, complete and unambiguous enough for implementers to derive efficient, portable implementations and enable open inter‑working of components.

Key topics

• Computational object model: Defines the organization of computational objects and interfaces that expose enterprise information and business logic.
• Clusters of objects & interactions: Methodological principles for grouping objects and defining their interactions to support workflows.
• Basic information services: Core CRUD‑style services (Add, Update, Delete, Detail, List) specified as minimal common services for healthcare enterprise integration.
• General‑purpose interface & behavioural specs: Standardized interfaces, naming, data types and behavioural requirements to ensure consistent implementations.
• eHealth business‑related interfaces: Services supporting key workflows (for example, subject‑of‑care workflow, healthcare information workflow and activity management workflow).
• Extensibility rules: Guidance for extending the computational model to meet local or evolving requirements while preserving consistency.
• Interoperability emphasis: Ensures different engineering, language and communication specifications align to the same computational object model for portability.

Applications

• System architects & designers: Use the computational viewpoint to design a service layer that consolidates shared clinical and administrative data and business logic.
• Healthcare IT implementers & vendors: Map the formal model to specific technologies (APIs, middleware, microservices) while preserving portability and interoperability.
• Integrators & CIOs: Guide selection and integration of EHR, patient administration and other enterprise systems onto a common service architecture.
• Standards and compliance teams: Ensure implementations meet the minimal set of information services and can be safely extended.

Practical outcomes include a clear blueprint for building an integration platform for EHRs and other healthcare applications, improved component portability, and predictable interfaces for workflow automation.

Related standards

• ISO 12967‑1 (Enterprise viewpoint) and ISO 12967‑2 (Information viewpoint) - companion parts of the HISA series.
• ISO/IEC 10746 (RM‑ODP) - architectural viewpoint structure.
• ISO 13940 (Contsys) - terminology and concepts referenced.
• References to industry standards such as HL7 and FHIR (see Annex B) for mapping and interoperability.

Keywords: HISA, ISO 12967-3:2020, computational viewpoint, health informatics, service architecture, information services, EHR interoperability, healthcare workflows.