FHIR FHIRPath Function: subsumes
This page is part of FHIR FHIRPath (FHIR-specific extensions). Base spec lives at FHIRPath.
subsumes(code : Coding | CodeableConcept) : Boolean
When invoked on a Coding-valued element and the given code is Coding-valued, returns true if the source code is equivalent to the given code, or if the source code subsumes the given code (i.e., the source code is an ancestor of the given code in a subsumption hierarchy), and false otherwise.
If the Codings are from different code systems, the relationships between the code systems must be well-defined or the return value is empty.
When the source or given elements are CodeableConcepts, returns true if any Coding in the source or given elements is equivalent to or subsumes the given code.
If either the input or the code parameter are not single value collections, the return value is empty.
Note that implementations are encouraged to make use of a terminology service to provide this functionality.
%terminologies.subsumes(Procedure.category, Procedure.code) = 'subsumes'