Use of the international classification of diseases, 9th revision, coding in identifying chronic hepatitis B virus infection in health system data: Implications for national surveillance

Reena Mahajan, Anne C. Moorman, Stephen J. Liu, Loralee Rupp, R. Monina Klevens, Scott D. Holmberg, Eyasu H. Teshale, Philip R. Spradling, Anne C. Moorman, Stuart C. Gordon, David R. Nerenz, Mei Lu, Lois Lamerato, Loralee B. Rupp, Nonna Akkerman, Nancy Oja-Tebbe, Chad M. Cogan, Dana Larkin, Joseph A. Boscarino, Zahra S. DaarJoe B. Leader, Robert E. Smith, Cynthia C. Nakasato, Vinutha Vijayadeva, Kelly E. Sylva, John V. Parker, Mark M. Schmidt, Emily M. Henkle, Tracy L. Dodge, Erin M. Keast

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Objective: With increasing use electronic health records (EHR) in the USA, we looked at the predictive values of the International Classification of Diseases, 9th revision (ICD-9) coding system for surveillance of chronic hepatitis B virus (HBV) infection. Materials and Methods: The chronic HBV cohort from the Chronic Hepatitis Cohort Study was created based on electronic health records (EHR) of adult patients who accessed services from 2006 to 2008 from four healthcare systems in the USA. Using the gold standard of abstractor review to confirm HBV cases, we calculated the sensitivity, specificity, positive and negative predictive values using one qualifying ICD-9 code versus using two qualifying ICD-9 codes separated by 6 months or greater. Results: Of 1 652 055 adult patients, 2202 (0.1%) were confirmed as having chronic HBV. Use of one ICD-9 code had a sensitivity of 83.9%, positive predictive value of 61.0%, and specificity and negative predictive values greater than 99%. Use of two hepatitis B-specific ICD-9 codes resulted in a sensitivity of 58.4% and a positive predictive value of 89.9%. Discussion: Use of one or two hepatitis B ICD-9 codes can identify cases with chronic HBV infection with varying sensitivity and positive predictive values. Conclusions: As the USA increases the use of EHR, surveillance using ICD-9 codes may be reliable to determine the burden of chronic HBV infection and would be useful to improve reporting by state and local health departments.

Original languageEnglish (US)
Pages (from-to)441-445
Number of pages5
JournalJournal of the American Medical Informatics Association
Volume20
Issue number3
DOIs
StatePublished - 2013
Externally publishedYes

ASJC Scopus subject areas

  • Health Informatics

Fingerprint Dive into the research topics of 'Use of the international classification of diseases, 9th revision, coding in identifying chronic hepatitis B virus infection in health system data: Implications for national surveillance'. Together they form a unique fingerprint.

Cite this