SNOMED CT's problem list: ontologists' and logicians' therapy suggestions

Area of Science:

• Medical Informatics
• Ontology Engineering
• Clinical Terminology

Background:

• SNOMED CT (Systematized Nomenclature of Medicine - Clinical Terms) is a comprehensive clinical terminology used globally.
• Existing architectural, logical, and ontological issues within SNOMED CT hinder its optimal use and development.
• A critical review identified specific areas requiring improvement for enhanced usability and accuracy.

Purpose of the Study:

• To present a roadmap for the overall improvement of the SNOMED CT architecture.
• To address identified logical and ontological issues within the current SNOMED CT framework.
• To propose novel approaches for modeling hierarchies and integrating qualifier relations.

Main Methods:

• Critical review of the existing SNOMED CT architecture and its logical/ontological properties.
• Analysis of SNOMED CT's upper-level categories, meta-class concepts, and entity types.
• Evaluation of SNOMED CT's binary relations and taxonomy structure.
• Proposal for a new approach to modeling part-whole hierarchies and integrating qualifier relations within a description logic framework.

Main Results:

• Recommendations include rearranging upper-level categories using a standard upper ontology.
• Proposed removal of meta-class concepts and separation of instantiable types from non-instantiable entities.
• Advocacy for reducing binary relations to canonical forms, cleansing taxonomies, and increasing full definitions.

Conclusions:

• The proposed roadmap offers a structured approach to resolving SNOMED CT's architectural challenges.
• Implementing these changes will enhance the logical consistency and ontological soundness of SNOMED CT.
• The study introduces innovative methods for part-whole hierarchies and qualifier relation integration, advancing clinical terminology modeling.