Medicare 的確是用不同的guideline, 關於code的信息有用，謝謝。按說大部分保險是應該管的。

If you are a Medicare beneficiary, however, the screening colonoscopy guidelines differ. If your doctor finds a polyp, the screening colonoscopy is coded as a diagnostic colonoscopy, and you will be responsible for a copayment.

根據我查到的信息，至少從2018年開始，用commercial insurance的人應該是保險全付的，除了藥的錢。這是聯邦的政策。我從聯邦勞工部查到的。參看我前麵的帖子。