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. 2016 Mar;25(3):263-8.
doi: 10.1002/pds.3870. Epub 2015 Sep 9.

Bayesian estimation of the accuracy of ICD-9-CM- and CPT-4-based algorithms to identify cholecystectomy procedures in administrative data without a reference standard

S Reza Jafarzadeh  1 , David K Warren  1 , Katelin B Nickel  1 , Anna E Wallace  2 , Victoria J Fraser  1 , Margaret A Olsen  1   3
Affiliations

Bayesian estimation of the accuracy of ICD-9-CM- and CPT-4-based algorithms to identify cholecystectomy procedures in administrative data without a reference standard

S Reza Jafarzadeh et al. Pharmacoepidemiol Drug Saf. 2016 Mar.

Abstract

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 by providers/facilities place of service in addition to room and board charges, were cross-classified according to the presence of codes for cholecystectomy. The accuracy of ICD-9-CM- and CPT-4-based algorithms was estimated using a Bayesian latent class model.

Results: The sensitivity and specificity were 0.92 [probability interval (PI): 0.92, 0.92] and 0.99 (PI: 0.97, 0.99) for ICD-9-CM-, and 0.93 (PI: 0.92, 0.93) and 0.99 (PI: 0.97, 0.99) for CPT-4-based algorithms, respectively. The parallel-joint scheme, where positivity of either algorithm was considered a positive outcome, yielded a sensitivity and specificity of 0.99 (PI: 0.99, 0.99) and 0.97 (PI: 0.95, 0.99), respectively.

Conclusions: Both ICD-9-CM- and CPT-4-based algorithms had high sensitivity to identify cholecystectomy procedures in administrative data when used individually and especially in a parallel-joint approach.

Keywords: Bayesian; cholecystectomy; latent class models; no reference standard; pharmacoepidemiology; sensitivity; specificity.

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References

    1. Shaffer EA. Epidemiology and risk factors for gallstone disease: has the paradigm changed in the 21st century? Curr Gastroenterol Rep. 2005;7:132–140. - PubMed
    1. Steiner CA, Bass EB, Talamini MA, Pitt HA, Steinberg EP. Surgical rates and operative mortality for open and laparoscopic cholecystectomy in Maryland. N Engl J Med. 1994;330:403–408. doi:10.1056/NEJM199402103300607. - PubMed
    1. Laycock WS, Siewers AE, Birkmeyer CM, Wennberg DE, Birkmeyer JD. Variation in the use of laparoscopic cholecystectomy for elderly patients with acute cholecystitis. Arch Surg Chic Ill 1960. 2000;135:457–462. - PubMed
    1. Ahmed HU, Smith JB, Rudderow DJ, Longo WE, Virgo KS, Johnson FE. Cholecystectomy in patients with previous spinal cord injury. Am J Surg. 2002;184:452–459. - PubMed
    1. Livingston EH, Rege RV. A nationwide study of conversion from laparoscopic to open cholecystectomy. Am J Surg. 2004;188:205–211. doi:10.1016/j.amjsurg.2004.06.013. - PubMed

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