Medicare covers colonoscopy after age 75, but the rules change

Medicare Part B covers colonoscopy screening at any age, including after 75. However, coverage depends on how often you have had screening in the past, whether you have symptoms, and your overall health status. Medicare will not pay for routine screening colonoscopies more frequently than once every 10 years for people without risk factors — and this rule applies the same way at 76 as it did at 65.

The key difference after 75 is that your doctor may recommend against routine screening altogether, depending on your medical history and life expectancy. This is a conversation between you and your physician, not a Medicare rule. If your doctor orders a colonoscopy, Medicare will typically cover it; if your doctor advises against it, Medicare's coverage rules become less relevant to your decision.

Key Takeaways

  • Medicare Part B covers colonoscopy screening once every 10 years if you have no symptoms or risk factors, regardless of age.
  • If you have symptoms like bleeding or changes in bowel habits, Medicare covers diagnostic colonoscopy at any age and any frequency your doctor orders.
  • After age 75, your doctor may recommend stopping routine screening based on your health, life expectancy, and prior screening history — this is medical judgment, not a Medicare coverage limit.
  • You pay 15 percent of the Medicare-approved amount after you meet your Part B deductible; if polyps are removed, the procedure is classified as therapeutic and you pay the same copay.
  • If you have a Medigap or Medicare Advantage plan, your out-of-pocket costs may differ from Original Medicare.

How Medicare classifies colonoscopy: screening versus diagnostic

Medicare divides colonoscopy into two categories, and the distinction matters for coverage. A screening colonoscopy is performed on someone with no symptoms, no personal history of polyps, and no family history of colorectal cancer. Medicare covers one screening colonoscopy every 10 years for people 50 and older, with no upper age limit written into the rule.

A diagnostic colonoscopy is performed when you have symptoms (blood in stool, persistent diarrhea, abdominal pain) or a personal or family history of polyps or colorectal cancer. Medicare covers diagnostic colonoscopy at any frequency your doctor orders, at any age. If your screening colonoscopy finds a polyp and it is removed during the same procedure, Medicare reclassifies the entire procedure as therapeutic (diagnostic), and you pay the diagnostic copay rather than the screening copay.

The age 75 question often arises because major medical organizations — including the American Cancer Society and the U.S. Preventive Services Task Force — recommend discussing the benefits and risks of continued screening with your doctor at that age. This is not a Medicare rule; it is medical guidance. Your doctor may recommend continuing screening, stopping it, or adjusting the interval based on your individual situation.

What Medicare actually pays and what you pay

Under Original Medicare, Part B covers 80 percent of the Medicare-approved amount for colonoscopy after you meet your annual Part B deductible. You pay the remaining 20 percent. The Medicare-approved amount varies by location and facility type (hospital outpatient department versus ambulatory surgery center), but typically ranges from $500 to $1,200 for a screening colonoscopy without complications.

If the procedure is performed at a hospital outpatient department, you may also owe a facility copay in addition to the 20 percent coinsurance. If it is performed at an ambulatory surgery center, you typically pay only the 20 percent coinsurance. Ask your doctor's office which facility type they use and request an estimate before the procedure.

If you have a Medigap policy, it may cover some or all of your 20 percent coinsurance, depending on the plan. If you have a Medicare Advantage plan, your copay structure is different — you may pay a flat copay (for example, $250) rather than 20 percent coinsurance. Check your plan documents or call your plan's customer service to learn your exact out-of-pocket cost before scheduling.

Screening history and the 10-year rule after 75

Medicare's 10-year interval rule applies regardless of age. If you had a screening colonoscopy at age 72 with no polyps found, Medicare will not cover another screening colonoscopy until age 82, even if you request one. If you had a polyp removed at age 72, the interval may be shorter (typically 3, 5, or 10 years depending on the polyp type), and your doctor will specify when the next colonoscopy should occur.

After age 75, this rule does not change — but your doctor's recommendation may. Some doctors recommend stopping routine screening at 75 or 80 if you have had adequate prior screening (multiple normal colonoscopies) and no symptoms. Others continue screening into the 80s if you are in good health and have not had recent screening. This is a clinical decision, not a coverage decision.

If you are unsure whether you are due for screening, ask your primary care doctor or gastroenterologist for your screening history. They can tell you when your last colonoscopy was, what was found, and whether another one is due according to both Medicare rules and current medical guidelines.

Symptoms and diagnostic colonoscopy after 75

If you develop symptoms — blood in stool, persistent diarrhea, unexplained weight loss, or changes in bowel habits — your doctor may order a diagnostic colonoscopy regardless of your age or when your last screening was. Medicare covers diagnostic colonoscopy at any age and at any frequency, because it is investigating a medical problem, not performing routine screening.

Diagnostic colonoscopy is also covered if you have a family history of colorectal cancer or polyps, or if you have a personal history of inflammatory bowel disease. In these cases, the screening interval may be shorter than 10 years, and Medicare will cover it. The key is that your doctor must document the medical reason for the procedure in your chart.

What to do before scheduling a colonoscopy after 75

Before you schedule, confirm with your doctor that a colonoscopy is appropriate for you at this time. Ask whether it is screening or diagnostic, and when your last colonoscopy was. If you do not remember, ask your doctor to pull your records.

Once you have decided to proceed, call your gastroenterologist's office and ask for an estimate of your out-of-pocket cost. Provide your Medicare information and ask whether the procedure will be done at a hospital outpatient department or an ambulatory surgery center. If you have a Medigap or Medicare Advantage plan, call that plan's customer service line to learn your specific copay.

Ask your doctor's office whether they will submit the claim to Medicare on your behalf (they should) and whether you will receive a bill after Medicare processes it. Some facilities bill you upfront; others bill after insurance processes the claim. Knowing this in advance prevents surprises.

When your doctor recommends against screening after 75

If your doctor recommends against routine screening colonoscopy after 75, the reasons usually include: you have had multiple normal colonoscopies in the past, you have significant medical conditions that limit life expectancy, or the risks of the procedure (perforation, bleeding, sedation complications) outweigh the benefits for you personally.

This recommendation is based on medical judgment, not on Medicare coverage limits. Medicare would cover a colonoscopy if you wanted one, but your doctor is advising that it is not in your best interest. In this situation, it is reasonable to ask your doctor to explain the reasoning and to discuss whether the decision might change if your health status changes.

If you want a second opinion, you can see another gastroenterologist. Medicare will cover a colonoscopy ordered by a different doctor if that doctor determines it is medically necessary.

Frequently Asked Questions

Does Medicare stop covering colonoscopy at a certain age?

No. Medicare covers colonoscopy at any age, including after 75, 85, or 95. The coverage rule is based on screening interval (once every 10 years for routine screening) and medical necessity, not on age. Your doctor may recommend against screening based on your individual health, but that is different from Medicare refusing to pay.

Will I have to pay more for colonoscopy after 75?

No. Your Medicare copay does not change based on age. You pay 20 percent coinsurance after your Part B deductible, the same as you would at 65. If you have a Medigap or Medicare Advantage plan, your out-of-pocket cost depends on your plan, not your age.

What if I had a colonoscopy five years ago and want another one now?

If it was a screening colonoscopy with no polyps found, Medicare will not cover another screening colonoscopy until 10 years have passed. If your doctor believes you have symptoms or risk factors that warrant a diagnostic colonoscopy sooner, they can order one and Medicare will cover it — but they must document the medical reason in your chart.

Can I get a colonoscopy if I have not had one since I was 50?

Yes. If your last screening colonoscopy was more than 10 years ago, you are due for another one, and Medicare will cover it. If you have never had a colonoscopy, Medicare covers one at any age 50 and older. Schedule with your doctor to discuss whether screening is appropriate for you now.

What happens if a polyp is found during my screening colonoscopy after 75?

If a polyp is found and removed during the same procedure, Medicare reclassifies the entire visit as a therapeutic (diagnostic) procedure. You pay the diagnostic copay, not the screening copay. Your doctor will tell you when your next colonoscopy should be based on the type and size of the polyp removed.