<p>Supplemental. Reoperations following gastric bypass </p><p>ICD 9 diagnosis (E code) or procedure codes Operation Name E878.2 Reoperation NOS 436 Partial gastrectomy with anastomosis to </p><p> duodenum 437 Partial gastrectomy with anastomosis to jejunum 438 Other partial gastrectomy 438.1 Partial gastrectomy with jejunal transposition 439 Total gastrectomy 439.1 Total gastrectomy with intestinal interposition 439.9 Other total gastrectomy 445 Revision of gastric anastomosis 446.3 Closure of gastric fistula 455.1 Resection of small bowel 459.0 Intestinal anastomosis, NOS 459.1 Small bowel-small bowel anastomosis 467 Other repair of intestine 468 Dilation of intestine 443.8, 443.1, 443.9 Roux-En-Y</p>