colostomy reversal colostomy reversal a colostomy reversal, also known as a colostomy takedown, is a reversal of the colostomy process by which the colon is reattached by anastomosis to the rectum or anus, providing for the reestablishment of flow of waste through the gastrointestinal tract. colostomy reversal, colostomy takedownother namescolostomy takedownicd-9-cm46.52 indications for the surgery include patient pain or discomfort caused by the colostomy, frequent skin breakdown or infection, and herniation at the colostomy site. the technical aspects of the surgery depend on the amount of remaining colon and rectum.