Mapping ICNP Version 1 concepts to SNOMED CT

Abstract

The purpose of this study is to evaluate the ability of SNOMED CT to represent concepts of the ICNP Version 1 - the 7-Axis model. We selected the 1568 concepts of the ICNP 7-Axis model. From January 2007 through June 2007, the first author mapped the ICNP Version 1 concepts to the SNOMED CT using CLUE browser 5.0. The second author from the SNOMED Terminology Solutions and the third author from the ICN validated mapping result. In total, SNOMED CT covered 1381 concepts of 1658 (83%) ICNP 7-Axis model concepts ranging from 65% coverage rate of the Actions Axis concepts to 94% coverage rate of the Judgment Axis concepts. SNOMED CT can represent most (83%) of the ICNP Version 1 concepts. Improvements in ICNP Version 1 in terms of concept naming and definition, and adding missing concepts to the SNOMED CT would lead to greater coverage of the ICNP Version 1 concepts.