Comparing Claims Data to Stroke and Bleeding in the NCDR Left Atrial Appendage Occlusion Registry.

Abstract

Claims data are increasingly used for postmarketing surveillance of therapies such as transcatheter left atrial appendage occlusion (LAAO), but their accuracy remains uncertain. This study aimed to compare stroke and bleeding events in the National Cardiovascular Data Registry LAAO Registry with claims data. LAAO Registry data for patients aged ≥65 years were linked to 2016 to 2021 Medicare claims. Primary diagnosis International Classification of Diseases-Tenth Revision codes from inpatient hos