A SNOMED CT Refset is a data structure defined within SNOMED CT® Release Format 2 (RF2), which consists of a set of references to SNOMED CT® components, like concepts, descriptions or relationships.

In its simple form a SNOMED CT Refset is used to represent a subset of SNOMED CT® content.

SNOMED CT Refsets:

Different types of SNOMED CT Refsets are used to represent:

For further information on SNOMED CT Refsets, see:

Change requests for SNOMED CT Refsets released by NHS England should be made through the Request Submission Portal on the NHS England website at: Welcome to the Request Submission Portal.