Category
User guide
Organisation
Type
Standard
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
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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