• Annals of surgery · Dec 2011

    The use, safety and cost of bariatric surgery before and after Medicare's national coverage decision.

    • David R Flum, Steve Kwon, Kara MacLeod, Bruce Wang, Rafael Alfonso-Cristancho, Louis P Garrison, Sean D Sullivan, and Bariatric Obesity Outcome Modeling Collaborative.
    • University of Washington Schools of Medicine, Pharmacy and Public Health, Seattle, WA, USA. daveflum@u.washington.edu
    • Ann. Surg. 2011 Dec 1;254(6):860-5.

    ObjectiveTo determine the impact of the Centers for Medicare and Medicaid Services' (CMS) bariatric surgery national coverage decision (NCD) on the use, safety, and cost of care CMS beneficiaries.BackgroundIn February 2006, the CMS issued a NCD restricting reimbursement for bariatric surgery to accredited centers and including coverage for laparoscopic adjustable gastric band (LAGB).MethodsA pre/postinterrupted time-series cohort study using nationwide Medicare data (2004-2008) evaluating rates of bariatric procedures/100,000 enrollees, 90-day mortality, readmission rate and payments.ResultsForty-seven thousand thirty patients underwent procedures at 928 sites pre-NCD and 662 post-NCD. The procedure rate/100,000 patients dropped after the NCD to 17.8 (from 21.9 in 2005) increasing to 23.8 and 29.1 in 2007 and 2008, respectively. Open roux-en-y gastric bypass (ORYGB) and laparoscopic roux-en-y gastric bypass (LRYGB) were common pre-NCD (56.0% ORYGB, 35.5% LRYGB) changing post-NCD with LAGB inclusion (12.8% ORYGB, 48.7% LRYGB, 36.7% LAGB). 90-day mortality pre-NCD was 1.5% (1.8% ORYGB, 1.1% LRYGB) and post-NCD was 0.7% (1.7% ORYGB, 0.8% LRYGB, 0.3% LAGB; P < 0.001). The 90-day rates of readmission decreased post-NCD (19.9% to 15.4%), reoperation (3.2% to 2.1%) and payments ($24,363 to $19,746; P for all <0.001). Differences in outcome and cost were largely explained by a shift in procedure type and patient characteristics.ConclusionsThe NCD was associated with a temporary reduction in procedure rate and a shift in types of procedures and patients undergoing bariatric surgery. It was associated with a significant decrease in the risk of death, complications, readmissions, and per patient payments.

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