A SNOMED CT Subset is a set of SNOMED CT® (Systematized Nomenclature of Medicine Clinical Terms) Concepts, Descriptions, or Relationships that is appropriate to deployment to support particular requirements of implementation.

SNOMED CT Subsets support user interface development through the organisation of clinical display, creation of menus and pick-lists, or support of knowledge structures.

SNOMED CT Subsets may be created as value sets for messaging or data entry or to provide pre-coordinated SNOMED CT® concepts for certain constrained use, or can inter-relate with qualifier value tables appropriate to the concept types.

SNOMED CT Subsets usually represent groups of concepts or objects (e.g. a specific clinical domain) which share specified characteristics.

Different types of Subsets are used to represent:

• Descriptions or concepts for particular realms or specialties
• Suitability of particular concepts for use in a particular context in a record
• Structure and ordering of hierarchies displaying concepts for user navigation

SNOMED CT Subsets can be registered or downloaded from the SNOMED CT Subset Registration page. This page is also used by the UK Terminology Centre to register SNOMED CT Subsets for distribution nationally in future releases.

For further information on SNOMED CT®, see SNOMED CT.

This supporting information is also known by these names:

Context	Alias
plural	SNOMED CT Subsets