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Validation of Acute Ischemic Stroke Codes Using the International Classification of Diseases Tenth Revision

Published:January 08, 2020DOI:https://doi.org/10.1016/j.amjcard.2020.01.004
      Administrative databases have increasingly become a platform for clinical investigations aiming to address trends in the prevalence, patterns of care, and outcomes of major cardiovascular diseases including strokes.
      • AlHajji M
      • Alqahtani F
      • Alkhouli M
      Contemporary trends in the utilization of administrative databases in cardiovascular research.
      • Alkhouli M
      • Alqahtani F
      • Tarabishy A
      • Sandhu G
      • Rihal CS
      Incidence, predictors, and outcomes of acute ischemic stroke following percutaneous coronary intervention.
      • Alqahtani F
      • Aljohani S
      • Tarabishy A
      • Busu T
      • Adcock A
      • Alkhouli M
      Incidence and outcomes of myocardial infarction in patients admitted with acute ischemic stroke.
      • Alkhouli M
      • Alqahtani F
      • Elsisy MF
      • Kawsara A
      • Alasnag M
      Incidence and outcomes of acute ischemic stroke following percutaneous coronary interventions in men versus women.
      Identification of acute ischemic stroke (AIS) events in these databases is dependent on billing codes. Hence, accurate querying of administrative databases for research purposes require proper validation of those billing codes. Several studies have previously validated the use of certain International Classification of Diseases-Ninth Revision-Clinical Modification (ICD-9-CM) codes to discern hospitalizations for AIS. However, on October 1, 2015, the Center for Medicare and Medicaid Services transitioned from ICD-9-CM to ICD-10-CM compendium of codes for diagnosis and billing in health care. To our knowledge, no studies have yet assessed the accuracy of ICD-10-CM codes in identifying patients admitted with AIS.
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