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A standard format for maintaining and distributing a set of references to SNOMED CT components and optionally associating referenced components with additional information.


  1. A reference set can be used to represent a subset of components (concepts, descriptions or relationships).

  2. A reference set that associates additional information with referenced components can be used to support various different purposes, such as representing:
    • An ordered lists of components;
    • Sets of associations between components;
    • Maps between SNOMED CT concepts and codes in other code systems, classifications or knowledge resources.


  • Refset
  • SNOMED CT reference set

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