Insurance is mandated to pay for preventive colonoscopies with no patient responsibility. No coinsurance, no copay, no deductible.

https://www.cancer.org/cancer/types/colon-rectal-cancer/dete...

> The Affordable Care Act (ACA) requires both private insurers and Medicare to cover the costs of all colorectal cancer screening tests that are recommended by the United States Preventive Services Task Force (USPSTF). The law stipulates that there should be no out-of-pocket costs for patients, such as co-pays or deductibles, for these screening tests.