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First published February 24, 2006 as JAMIA PrePrint; doi:10.1197/jamia.M1935
Journal of the American Medical Informatics Association 2006;13(3):353-355
© 2006 American Medical Informatics Association

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Submitted on August 15, 2005
Accepted on December 18, 2005

Standardizing Laboratory Data by Mapping to LOINC

Agha N. Khan MD, MPH1*, Stanley P. Griffith MD2, Catherine Moore2, Dorothy Russell3, Arnulfo C. Rosario Jr MD, MPH1, and Jeanne Bertolli PhD1

Affiliation of the authors: 1 Centers for Disease Control and Prevention, Atlanta, GA; 2 Indian Health Service, Albuquerque, NM; 3 Cimarron Medical Informatics, Tucson, AZ

* To whom correspondence should be addressed.

We describe a pilot project to standardize local laboratory data at five Indian Health Service (IHS) medical facilities by mapping laboratory test names to Logical Observation Identifier Names and Codes (LOINC). An automated mapping tool was developed to assign LOINC codes. At the sites, we were able to map from 63% to 76% of the local active laboratory tests to LOINC using the mapping tool. Eleven percent to 27% of the tests were mapped manually. We could not assign LOINC codes to 6% to 19% of the laboratory tests due to incomplete or incorrect information about these tests. The results achieved approximate other similar efforts. Mapping of laboratory test names to LOINC codes will allow IHS to aggregate laboratory data more easily for disease surveillance and clinical and administrative reporting efforts. This project may provide a model for standardization efforts in other health systems.






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