• Michael A Mazzeffi, James S Gammie, Kenichi Tanaka, Sari D Holmes, Rawn Salenger, Diane Alejo, Samuel Galvagno, Peter Rock, and Bradley Taylor.
• Department of Anesthesiology, University of Maryland School of Medicine, Baltimore, Maryland. Electronic address: mmazzeffi@som.umaryland.edu.
• Ann. Thorac. Surg. 2020 Aug 1; 110 (2): 592-597.

BackgroundIn 2014 Maryland began a global budget revenue (GBR) program where hospitals were assigned a global budget for each year. We hypothesized that this program would be associated with changes in coronary artery bypass grafting (CABG) patient risk profile, reductions in potentially preventable complications (PPCs) and 30-day hospital readmissions, and low annual per patient charge growth.MethodsPatients having isolated CABG surgery in Maryland between fiscal years 2013 and 2017 were included. Patient characteristics, admission all-payer refined severity of illness, PPCs, 30-day hospital readmissions, and per patient hospital charges were compared between years. The impact of Maryland's GBR program on PPCs and 30-day hospital readmissions was evaluated using interrupted time series analysis.ResultsDuring the study period 11,070 patients had CABG surgery. The percentage of patients with major or extreme severity of illness at admission differed significantly between years (34.6% in 2013 vs 46.1% in 2017, P < .001). There was a significant reduction in mean PPC incidence of -22.8% (95% confidence interval, -29.8% to -15.8%) after GBR implementation but no significant reduction in 30-day hospital readmissions (-2.7%; 95% confidence interval, -6.0% to 0.6%). Without adjusting for inflation the annual per patient charge growth remained between -1.4% and 2.6% from 2013 to 2017.ConclusionsMaryland's GBR program was associated with significant PPC reductions, minimal charge growth, and no significant change in 30-day hospital readmissions during its first 14 fiscal quarters. These findings suggest that Maryland's GBR program achieved some but not all of its predefined goals in CABG patients.Copyright © 2020 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.

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