Category User guide Organisation SNOMED Type Standard Access Open Status Active Created Oct-25 SNOMED CT is a standard for data elements used in the electronic exchange of clinical information.This document describes a diagrammatic notation for representing the definition of a concept, an expression, or the relationship between expressions. It should be used in all SNOMED International documentation and in other documentation representing SNOMED CT concepts and models.Main sections:- Rationale- Diagram types- Diagram elements- Layout- Examples Access Diagramming Guideline By accessing this content, you are leaving this website. The Agency takes no responsibility for the accuracy of content on the destination page.