Clinical practice as well as research and quality-assurance benefit from unambiguous
clinical information resulting from the use of a common terminology like the Systematized
Nomenclature of Medicine – Clinical Terms (SNOMED CT). A common terminology is a necessity
to enable consistent reuse of data, and supporting semantic interoperability. Managing
use of terminology for large cross specialty Electronic Health Record systems (EHR
systems) or just beyond the level of single EHR systems requires that mappings are
kept consistent. The objective of this study is to provide a clear methodology for
SNOMED CT mapping to enhance applicability of SNOMED CT despite incompleteness and
redundancy. Such mapping guidelines are presented based on an in depth analysis of
14 different EHR templates retrieved from five Danish and Swedish EHR systems. Each
mapping is assessed against defined quality criteria and mapping guidelines are specified.
Future work will include guideline validation.
Keywords
SNOMED CT - electronic health record - terminology - guidelines - semantic interoperability
- information retrieval