A hierarchical view of SNOMED CT concepts that differs from the subtype hierarchy and enables an alternative way to locate and view part or all of the concept of SNOMED CT.
Notes
- SNOMED CT enables navigation hierarchies to be specified using either:
- an ordered association reference set in which the display order of nodes can be specified; or
- an association reference set which the display order is not specified.
- The links in a navigation hierarchy do not contribute in any way to the semantic definitions of the linked concepts.
- A navigation hierarchy may include navigation concepts which are created to represent nodes in the hierarchy exist only to organize the hierarchy and cannot be selected for data entry.
- A navigation hierarchy may be limited to a subset of concepts relevant to a particular use case.
- Many different navigation hierarchies can be created, each specifying a structure that meets the needs of a particular use case.
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