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This type of search limits the number of search candidates significantly, as it excludes all Concepts of types other than those specified by the chosen subtype hierarchy. More granular Concepts than the top-level Concepts can be used as the basis for this type of search. For instance, searching for subtypes of
| Concept |
|---|
| ShowParts | term |
|---|
| t | | Cardiovascular finding | |
|---|
|
will further concentrate the type and number of candidate results.
Benefits of Using Reference Sets
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Moreover, Reference Sets can also be used to exclude Concepts as possible result candidates. For example, as SNOMED CT contains both animal and human Concepts, for human medicine it is likely that Concepts in the non-human Reference Set needs to be excluded from all searches.
Language Reference Sets
It is a benefit that SNOMED CT supports development of Language Reference Sets, as this supports searches by Descriptions that are limited to a specific language or dialect (see 4.4.4. Constrain Searches by Language or Dialect). A Language
identifies the
which are considered to be preferred designation for and acceptable as alternatives for SNOMED CT Concepts in the context of a given language and, optionally,
.
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