Colon cancer surgery is complex and requires a team of specialists, nurses and specialised equipment. The average number of days in hospital is 7-10 days after the operation. As the cost depends on the complexity of the case and the technique used, it is difficult to quote a number but it would roughly range from $40,000 to $70,000 all inclusive. Colorectal cancer surgery is Medisave and insurance claimable. It would be best to contact your insurance provider as they are the best persons to answer your policy questions.