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Purpose
To estimate the accuracy of two algorithms to identify cholecystectomy procedures using International Classification of Diseases, 9th Edition, Clinical Modification (ICD‐9‐CM) and Current Procedural Terminology (CPT‐4) codes in administrative data.
Methods
Private insurer medical claims for 30 853 patients 18–64 years with an inpatient hospitalization between 2006 and 2010, as indicated...
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