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Category
Specification
Organisation
Access
Open
Status
Active
Created
November 2023
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

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