Bariatric Surgery for Diabetes

CMS has determined that open and laparoscopic Roux-en-Y gastric bypass, laparoscopic adjustable gastric banding, and open and laparoscopic biliopancreatic diversion with duodenal switch in Medicare beneficiaries who have type 2 diabetes mellitus (T2DM) and a body mass index (BMI) less than 35 is no longer considered reasonable and necessary. It has been determined that these same procedures do improve health in patients with T2DM with a BMI greater than 35 so they are still considered reasonable and necessary in those situations.