Impact of Hospital Readmissions Reduction Program Policy on 30-Day and 90-Day Readmissions in Patients With Acute Myocardial Infarction: A 10-Year Trend From the National Readmissions Database.

Hospital readmissions following acute myocardial infarction (AMI) pose a significant economic burden on health care utilization. The hospital readmission reduction program (HRRP) enacted in 2012 focused on reducing readmissions by penalizing Centers for Medicare & Medicaid Services (CMS) Medicare hospitals. We aim to assess the trend of readmissions after AMI hospitalization between 2010 and 2019 and assess the impact of HRRP. The National Readmission Database was queried to identify AMI hospitalizations between 2010 and 2019. In the primary analysis, trends of 30-day and 90-day all-cause and AMI specific readmissions were assessed from 2010 to 2019. In the secondary analysis, trend of readmission means length of stay and mean adjusted total cost were calculated. There were a total of 592,015 30-day readmissions and 787,008 90-day readmissions after an index hospitalization for AMI between 2010 and 2019. The rates of 30-day and 90-day all-cause readmissions decreased significantly from 12.8% to 11.6%, (P = 0.0001) and 20.6 to 18.8, (P = 0.0001) respectively in the decade under study. With regards to HRRP policy intervals, the pre-HRRP period from 2010 to 2012 showed a downward trend in all-cause readmission (12.8% to 11.6%) and similarly a downward trend was also seen in the post HRRP period (2013-2015:11.0%-8.2%, 2016-2019-12.3-11.7%). Secondary analysis showed a trend towards increase in mean length of stay (4.54-4.96 days, P = 0.0001) and adjusted total cost ($13,449-$16,938) in 30-day all-cause readmission for AMI in the decade under review. In our National Readmission Database-based analysis of patients readmitted to hospitals within 30-days and 90-days after AMI, the rate of all-cause readmissions down trended from 2010 to 2019.

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