• J Gen Intern Med · Sep 1999

    Positive predictive value of the diagnosis of acute myocardial infarction in an administrative database.

    • L A Petersen, S Wright, S L Normand, and J Daley.
    • Center for the Study of Practice Patterns in Acute Myocardial Infarction, Health Services Research and Development, Roxbury VA Medical Center, Boston, Mass., USA.
    • J Gen Intern Med. 1999 Sep 1; 14 (9): 555558555-8.

    ObjectiveTo determine the positive predictive value of ICD-9-CM coding of acute myocardial infarction and cardiac procedures.MethodsUsing chart-abstracted data as the standard, we examined administrative data from the Veterans Health Administration for a national random sample of 5,151 discharges.Main ResultsThe positive predictive value of acute myocardial infarction coding in the primary position was 96.9%. The sensitivity and specificity of coding were, respectively, 96% and 99% for catheterization, 95.7% and 100% for coronary artery bypass graft surgery, and 90.3% and 99. 7% for percutaneous transluminal coronary angioplasty.ConclusionsThe positive predictive value of acute myocardial infarction and related procedure coding is comparable to or better than previously reported observations of administrative databases.

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