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A test to determine if a specified candidate concept or expression is a subtype descendant of another specified concept or expression.


  • Literally speaking a subsumption test determines if one concept is subsumed by another. 
  • In the context of SNOMED CT a concept is subsumed by its supertypes and subsumes its subtypes. So the following terms are for all practical purposes interchangeable.
Uses of the terms subsumption and subsumeEquivalent uses of the words supertype and subtype
subsumption test

subtype test

A subsumes BA is a supertype of B
A is subsumed by CA is a subtype of C



  • Subtype test

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