I had the same thing happen to me on my first colonoscopy (i.e. found a NET ). When scheduling the colonoscopy make sure they know you are on a 1 year or 3 year high risk screening per your doctor. Should be a screening if not symptomatic. I am also a medical coder. I would ask that your colonoscopy be reviewed and recoded as a screening. If need be perhaps you doctor can confirm that to the coder or billing office. They will need to submit a new claim with the new codes to your insurance company. Don't pay until that has been done.