Specialty Surgeon Complete Packaged Procedure. Gastric By-pass surgery is any of a group of similar operations used to treat morbid obesity, the severe accumulation of excess weight as fatty tissue. Bariatric surgery is the term encompassing all of the surgical treatments for morbid obesity, not just gastric bypasses. Gastric bypass procedures divide the stomach into a small upper pouch and a much lUSAer, lower ‘remnant’ pouch, reducing stomach size and then re-arranges the small intestine to allow both pouches to stay connected to it. Treatment cost includes the facility fee, physician’s fee, related medical procedures and drugs required to administer the plan of care. Not included are diagnostic studies, consultations with additional specialists and cost of complication management; travel, food and lodging.