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The SNOMED RT Procedure Model
R H Dolin1, K Spackman, A Abilla
1Kaiser Permanente, USA. Robert.H.Dolin@kp.org
Background:
SNOMED RT represents a fundamental change from prior versions of SNOMED. The logic-based structure of SNOMED RT enables concepts to be defined more explicitly, providing an opportunity to address inconsistencies and ambiguities present in prior SNOMED concept definitions.
Objectives:
Create a unifying organizational strategy for all SNOMED RT procedures, and remove ambiguities in procedure concept definitions.
Methods:
A comprehensive model of procedures was developed, based on a set of guiding principles and a review of known existing models.
Results:
All SNOMED RT procedures are categorized by a common set of "root procedures" (high level atomic actions), and are more explicitly defined by a shared set of defining relationships.
Conclusions:
While the objectives have largely been met, open issues continue to be addressed. The similarity between procedure models of SNOMED RT and the U.K. s Clinical Terms Version 3 is proving to greatly facilitate the full integration of the two terminologies into a merged vocabulary to be known as SNOMED Clinical Terms (SNOMED CT), slated to be released in the near future.
