ISO/TS 22789:2010

Overview

ISO/TS 22789:2010 - Health informatics - Conceptual framework for patient findings and problems in terminologies - defines a core conceptual model for representing clinical findings and problems in health terminologies. The Technical Specification focuses on in‑vivo descriptions of patient structure and function (including diseases and observed findings) and prescribes a categorial structure and set of domain constraints to be used by classification, coding and clinical terminologies. The goal is to improve semantic consistency, mapping and computer‑processable representation of patient findings across systems.

Key topics and technical requirements

• Categorial structure: specifies a minimal set of domain constraints for representing concept systems in the subject field of patient findings and problems.
• Sanctioned characteristics: the standard defines sanctioned characteristics as combinations of a semantic link and an applicable characterizing category (for example, {HasAnatomicalSite} + ).
• Composite characteristics / qualifiers: formal attribute‑value style constructs (e.g., hasCause Bacterium; Location = LeftUpperLobeOfLung) used to build compositional concept representations.
• Semantic links: directed associative or partitive relations (examples in the specification include hasLocation/isLocationOf, hasCause/isCauseOf, HasMorphology).
• Compositional concept representation: intensional definitions using one or more composite characteristics to allow inference, subsumption and formal reasoning.
• Domain constraints and mapping: rules (sanctions) prescribing which characteristics are valid for a concept in this domain to facilitate mapping between terminologies and semantic correspondence.
• Conformance: the model references ISO 17115 and related standards (and uses terms from ISO 1087‑1) to ensure interoperability with other concept representation frameworks.

Applications and practical value

• Facilitates development and expansion of clinical terminologies and coding systems that represent patient findings (e.g., to align content with SNOMED CT, ICD‑10, NHS Clinical Terms).
• Enables interoperability and mapping between legacy and modern terminologies by providing a common core model and sanctioned characteristics.
• Supports software developers, EHR implementers and terminologists in producing machine‑processable, compositional concept representations for clinical decision support, analytics and data exchange.
• Improves data consistency for clinicians, coders, analysts and epidemiologists when entering, retrieving or analysing patient findings.

Who should use it

• Terminology system developers, EHR architects, IT specialists, clinical informaticians, coders and health data managers seeking a standard model for describing patient findings and problems.

Related standards

• ISO 17115 (concept representation patterns), ISO 1087‑1 (terminology vocabulary). The specification references practical terminologies such as ICD‑10, SNOMED CT and NHS Clinical Terms as exemplar sources for the model.

Keywords: ISO/TS 22789:2010, health informatics, patient findings, clinical terminologies, sanctioned characteristics, semantic link, compositional representation, interoperability, terminology mapping.