Category User guide Organisation SNOMED Type Standard Access Open Status Active Created Nov-25 SNOMED CT is a standard for data elements used in the electronic exchange of clinical information.This document defines a formal language (syntax) for representing sets of clinical meanings using SNOMED CT expression constraints. Expression constraints are used for various purposes, including restricting the valid values in a health record, intentionally defining a reference set, or restricting the range of an attribute in the SNOMED CT concept model.The document includes examples and implementation guidance.Main sections:- Use cases- Requirements- Logical model- Syntax specification- Examples Access Expression Constraint Language - Specification and Guide By accessing this content, you are leaving this website. The Agency takes no responsibility for the accuracy of content on the destination page.