. Author manuscript; available in PMC: 2010 Jun 1.

Published in final edited form as: J Biomed Inform. 2009 Mar 12;42(3):490–493. doi: 10.1016/j.jbi.2009.03.004

Table 3.

Examples of SNOMED CT changes and the affected maps.

Version 1	Version 2	# Affected maps (n = 1118)	Result	Comment
History/symptoms (context-dependent category)	History/symptoms (navigational concept)	342	NO MAP	Navigation concepts do not allow post-coordination
Family history of (context-dependent category)	Family history of (situation)	40	Category change only
History of (contextual qualifier)	History of (present illness) (situation)	34	Category change only
Past medical history of (context-dependent category)	Past medical history of (situation)	8	Category change only
Finding by auscultation (finding) + Associated with (attribute) + Clinical finding	Clinical finding + Finding method (attribute) + Auscultation (procedure)	62	Revised map
Finding by inspection (finding) + Associated with (attribute) + Clinical finding	Clinical finding + Finding method (attribute) + Inspection (procedure)	449	Revised map
Finding by palpation (finding) + Associated with (attribute) + Clinical finding	Clinical finding + Finding method (attribute) + Palpation (procedure)	142	Revised map
Finding by percussion (finding) + Associated with (attribute) + Clinical finding	Clinical finding + Finding method (attribute) + Percussion (procedure)	13	Revised map
Procedure + Component (attribute) + Observable entity	Measurement procedure + Component (attribute) + Observable entity	28	Revised map	Component changed to measurement procedure only