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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| SNOMED CT | 6/6 | https://en.wikipedia.org/wiki/SNOMED_CT | reference | science, encyclopedia | 2026-05-05T07:13:59.990399+00:00 | kb-cron |
== Authoring conventions == A goal for SNOMED CT is consistency. Several mechanisms are employed to ensure this. Machine readable concept model is used to check for compliance with a set of rules. Rules for creating fully specified name for a concept define allowed and not allowed patterns. When defining a concept, a proximal primitive parent rule is used (in stated definition) to employ best description logic derived classification of concepts. Separate conventions govern grouping of relationships. Ability to group related relationships is an important strength of SNOMED CT. Rules in Machine Readable Concept Model (MRCM) specify by domain which relationships are never grouped (e.g., 'Is a' or 'Laterality' attributes) and which relationships are always grouped (e.g., 'Finding site'). For correct subsumption inference, some relationships may be in a group but consist of a single relationship. Another convention for SNOMED CT international edition is to avoid creating intermediate primitive concepts (unless medically necessary and impossible to define with existing concept model). An intermediate primitive (=not defined) concept is a non-defined concept that has children concepts and parent concepts. This convention is related to the use of description logic to facilitate terminology maintenance. Because primitive concepts can not be processed by the description logic classifier, the maintenance of such concepts relies solely on human editors. Adding new intermediate primitive concepts requires changes to all affected concepts and is demanding in terms of terminology maintenance.
== See also == CDISC Clinical Care Classification System DOCLE EN 13606 MEDCIN MedDRA Omaha System ICD11 Foundational Model of Anatomy
== References ==
== External links ==
SNOMED International website SNOMED International's online browsers for SNOMED CT US National Library of Medicine SNOMED CT resources NHS Digital SNOMED CT resources Veterinary Extension of SNOMED CT