Key result
ICD-9-CM codes for acute myocardial infarction, atrial fibrillation/flutter, and heart failure demonstrated high diagnostic accuracy, with sensitivity ≥95% and specificity ≥90% for all three conditions.
Why the study?
Administrative databases are valuable for assessing disease burden and outcomes, but the reliability of the gathered information is a crucial issue requiring validation of ICD-9 codes.
Do ICD-9-CM codes accurately identify cases of acute myocardial infarction, atrial fibrillation/flutter, and heart failure in healthcare administrative databases compared to medical chart review?
Observational (n=458)
None
Random sample of cases and non-cases
Yes
Do ICD-9-CM codes accurately identify cases of acute myocardial infarction, atrial fibrillation/flutter, and heart failure in healthcare administrative databases compared to medical chart review?
Effect estimate: Sensitivity ≥95% and Specificity ≥90% across all three conditions
ICD-9-CM codes for acute myocardial infarction, atrial fibrillation/flutter, and heart failure in the Umbria Region administrative database show high diagnostic accuracy (≥90%) and can be reliably used for epidemiological and health services research.
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May support reliable case ascertainment in Umbria administrative data for research; leaves open validation in other regions and databases.
Cozzolino et al. (2019) conducted an observational in Acute myocardial infarction, atrial fibrillation/flutter, heart failure (n=458). ICD-9-CM codes for cardiovascular diseases (AMI, AF/flutter, HF) vs. Medical chart review (reference standard) was evaluated on Diagnostic accuracy (sensitivity, specificity, positive predictive value, negative predictive value) of ICD-9-CM codes (Sensitivity ≥95% and Specificity ≥90% across all three conditions). ICD-9-CM codes for acute myocardial infarction, atrial fibrillation/flutter, and heart failure demonstrated high diagnostic accuracy, with sensitivity ≥95% and specificity ≥90% for all three conditions.
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