• Alexa N Ehlert, Susan R Heckbert, Kerri L Wiggins, and Evan L Thacker.
• Department of Health Science, Brigham Young University, Provo, Utah.
• Clin Cardiol. 2017 Dec 1; 40 (12): 1227-1230.

BackgroundAdministrative billing codes for electrical cardioversion and ablation/maze procedures may be useful for atrial fibrillation (AF) research if the codes are accurate relative to medical record documentation.HypothesisAdministrative billing codes accurately identify occurrence of electrical cardioversion and ablation/maze procedures in AF patients.MethodsWe studied adults ages 30 to 84 who experienced new-onset AF between October 2001 and December 2004 in Group Health Cooperative (acquired by Kaiser Permanente in 2017), an integrated healthcare system in Washington state and northern Idaho. Using medical record review as the gold standard, we calculated sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) for 3 administrative billing codes for electrical cardioversion and 3 codes for AF ablation/maze procedures.ResultsOf 1953 study participants, during a mean (SD) of 1.5 (0.7) years of follow-up after AF onset, 470 (24%) experienced electrical cardioversion and 44 (2%) experienced ablation/maze procedures, according to medical record review. For electrical cardioversion, individual codes had 7.7% to 76.4% sensitivity, >99% specificity, 83.7% to 96.5% PPV, and 77.3% to 93.0% NPV. Considering any of 3 codes (code 1 or code 2 or code 3) improved sensitivity to 84.9%. For ablation/maze, individual codes had 18.2% to 47.7% sensitivity, >99% specificity, 66.7% to 95.5% PPV, and >98% NPV. Considering any of 3 codes improved sensitivity to 84.1%.ConclusionsAdministrative billing data accurately identified electrical cardioversion and ablation/maze procedures and can be used instead of medical record review. Our findings apply to healthcare settings with available administrative billing databases.© 2017 Wiley Periodicals, Inc.

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