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The accuracy of myocardial infarction diagnosis in medical insurance claims

Authors
 So Yeon Ryu ; Jong Ku Park ; Ki Soon Kim ; Chun Bae Kim ; Jong Park ; Sun Ha Jee ; Il Suh 
Citation
 Yonsei Medical Journal, Vol.41(5) : 570~576, 2001 
Journal Title
 Yonsei Medical Journal 
ISSN
 0513-5796 
Issue Date
2001
Abstract
We attempted to assess the accuracy of the International Classification of Diseases (ICD) codes for myocardial infarction (MI) in medical insurance claims, and to investigate the reasons for any inaccuracy. This study was designed as a preliminary study to establish a surveillance system for cardiovascular diseases in Korea. A sample of 258 male patients who were diagnosed with MI from 1993 to 1997 was selected from the Korea Medical Insurance Corporation cohort (KMIC cohort: 183,461 people). The registered medical record administrators were trained in the survey technique, and gathered data by investigating the medical records of the study subjects from March 1999 to May 1999. The definition of MI for this study included symptoms pursuant to the diagnostic criteria of chest pain, electrocardiogram (ECG) findings, cardiac enzyme and results of coronary angiography or nuclear scan. We asked the record administrators for the reasons of incorrectness for cases where the final diagnosis was 'not MI'. The accuracy rate of the ICD codes for MI in medical insurance claims was 76.0% (196 cases) of the study sample, and 3.9% (ten cases) of the medical records were not available due to hospital closures, non-computerization or missing information. Nineteen cases (7.4%) were classified as insufficient due to insufficient records of chest pain, ECG findings, or cardiac enzymes. The major reason of inaccuracy in the disease code for MI in medical insurance claims was 'to meet the review criteria of medical insurance benefits (45.5%)'. The department responsible for the inaccuracy was the department of inspection for medical insurance benefit of the hospitals.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/142664
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Preventive Medicine
Yonsei Authors
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