Validity of International Classification of Disease Codes to Identify Ischemic Stroke and Intracranial Hemorrhage Among Individuals With Associated Diagnosis of Atrial Fibrillation [Original Articles]

Conclusions—
Using ICD-9 stroke and AF codes to identify patients with stroke plus AF resulted in inaccuracies. Given the expanded financial and policy implications of patient-oriented research, conclusions derived solely from administrative data without validation of outcome events should be interpreted with caution.

Source: Circulation: Cardiovascular Quality and Outcomes - January 20, 2015 Category: Cardiology Authors: Thigpen, J. L., Dillon, C., Forster, K. B., Henault, L., Quinn, E. K., Tripodis, Y., Berger, P. B., Hylek, E. M., Limdi, N. A. Tags: Health policy and outcome research, Acute Cerebral Hemorrhage, Acute Cerebral Infarction Original Articles Source Type: research