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@article {loinc-345, author = {Lin, Ming-Chin and Vreeman, Daniel J and McDonald, Clement J and Huff, Stanley M}, title = {Correctness of Voluntary LOINC Mapping for Laboratory Tests in Three Large Institutions.}, journal = {AMIA ... Annual Symposium proceedings / AMIA Symposium. AMIA Symposium}, abstract = {With IRB approval, we obtained de-identified laboratory test data from 3 large institutions (ARUP, Intermountain, and Regenstrief). In this study we evaluated correctness of mapping local laboratory result codes to Logical Observation Identifier Names and Codes (LOINC®). We received 9,027 laboratory tests mapped to 3,669 unique LOINC codes. A one tenth sample (884 tests) was manually reviewed for correctness of the mappings. After review, there were 4 tests mapped to totally unrelated LOINC codes and there were 36 tests containing at least one error in mapping to the 6 axes of LOINC. The errors of LOINC mapping could be categorized into 4 systematic errors: 1) human errors, 2) mapping to different granularity, 3) lack of knowledge of the meaning of laboratory tests and 4) lack of knowledge of LOINC naming rules. Finally, we discuss how these systematic mapping errors might be avoided in the future.}, year = {2010}, issn = {1942-597X}, pages = {447-51}, month = {}, volume = {2010}, pmid = {21347018} }