My Aunt thought this was interesting.

"Dear Marci, Does Medicare cover colonoscopies? - Dennis Dear Dennis, Yes. Medicare covers a colonoscopy once every two years (24 months) if you are at high risk for colorectal cancer (e.g., have a family history of the disease or have had colorectal polyps or colorectal cancer, or have had inflammatory bowel disease), or once every 10 years if you are not at high risk (but not within 48 months ..."

Do you?