Colonoscopy Cost With and Without Insurance: US, UK and China

That jump from free to a four-figure bill is the part most people do not see coming. Whether you pay nothing or thousands for a colonoscopy depends less on the procedure itself than on how it is coded. This guide covers prices with and without insurance, the screening versus diagnostic rule, what Medicare and high-deductible plans charge, and what a self-pay colonoscopy costs in China.

How much does a colonoscopy cost with and without insurance?

Without insurance, a colonoscopy in the US costs about USD 2,750 on average, with a typical range of USD 1,250–4,800, according to a 2024–26 price aggregator. Cash prices at ambulatory surgery centres are lower, at about USD 800–1,800. With insurance, a screening colonoscopy from an in-network provider is often USD 0, while a diagnostic one is charged through your deductible and coinsurance.

Where you go matters. The same aggregator puts the hospital outpatient average at about USD 2,550, and Healthcare Bluebook's figure for New York City is USD 2,712. The doctor, the anaesthesia service, the facility and the pathology lab can each bill separately, so ask for a total that includes all four. If you also need an upper endoscopy (gastroscopy), it is a separate procedure with its own charges. Our sources give no reliable US self-pay figure for the pair, so ask the centre for a combined quote.

In the UK, the Private Healthcare Information Network (PHIN) puts a private colonoscopy at GBP 2,000–4,000, plus GBP 130–400 for the consultation (updated July 2025). Waiting is what pushes many people towards private care: in July 2026, 30.8% of patients on the English waiting list for a colonoscopy had waited six weeks or more, according to NHS England diagnostic statistics.

Is a colonoscopy covered as preventive screening or as diagnostic?

It depends on why you are having it. A colonoscopy for someone without symptoms, at the recommended age, counts as preventive screening; one ordered because of symptoms such as bleeding or a change in bowel habits is diagnostic. Under the Affordable Care Act, Marketplace plans and many other plans must cover listed preventive services with no copay or coinsurance, even before the deductible, when you use an in-network provider. HealthCare.gov lists colorectal cancer screening for adults aged 45 to 75, and also notes that USD 0 is not guaranteed in every case.

A colonoscopy for symptoms is not on the preventive list, so your plan's normal cost-sharing applies. There is no single official sentence that says this; it follows from how the preventive rule is written. The American Cancer Society (2026) also points out that some insurers treat a colonoscopy as diagnostic after a positive stool test, and that out-of-network doctors can cost more. Its practical advice is to ask your insurer before the test.

How much does a colonoscopy cost if it becomes diagnostic or a polyp is removed?

For most people with private insurance, removing a polyp during a screening colonoscopy should not add cost-sharing; a colonoscopy that is diagnostic from the start goes through your deductible and coinsurance; and Medicare patients pay a share when a polyp is removed. Federal guidance from 2013 says private plans may not charge cost-sharing for polyp removal during a screening colonoscopy, because removal is an integral part of the procedure. Plans may still charge for treatment that is not itself a preventive service.

A 2022 federal FAQ added that a follow-up colonoscopy after a positive stool test or other screening test must be covered without cost-sharing by private plans, starting with plan years that began after the end of May 2022. Patients still report being billed for these, and some insurers treat them as diagnostic, so check with yours.

Medicare works differently. Part B pays in full for a screening colonoscopy if the provider accepts assignment, including a follow-up after a positive stool or blood-based test. If a polyp is removed, you pay 15% coinsurance of the Medicare-approved amount for the doctor, plus 15% of the facility charge in a hospital outpatient department or surgery centre. The Part B deductible does not apply. Screening is covered once every 120 months, or every 24 months if you are at high risk. Trade media citing the federal Medicare agency report that this coinsurance falls to 10% from 2027 to 2029 and to 0% from 2030.

On a high-deductible plan, a diagnostic colonoscopy can mean paying most of the bill yourself. For 2026, a plan that qualifies for a health savings account must have a deductible of at least USD 1,700 for one person or USD 3,400 for a family, and yearly out-of-pocket costs can reach USD 8,500 or USD 17,000, according to the IRS. If you have not met the deductible, much of a diagnostic colonoscopy bill lands on you.

At what age does insurance cover a screening colonoscopy?

US private plans that follow the Affordable Care Act cover colorectal cancer screening for adults aged 45 to 75. Medicare covers a screening colonoscopy every 120 months, or every 24 months for people at high risk. Before 45, a colonoscopy for symptoms is billed as diagnostic, so expect to pay toward your deductible and coinsurance.

A family history can change when screening starts, but whether your plan treats an early colonoscopy as preventive depends on the plan and on what your doctor writes on the order. Ask your insurer which code will be used and whether it counts as preventive for you.

How much do a colonoscopy and gastroscopy cost in China, with or without insurance?

At Chinese public hospitals, patients report paying a median of about CNY 1,500 (≈ USD 220) for a sedated gastroscopy and colonoscopy together, commonly CNY 1,300–1,700 (≈ USD 190–250), before insurance (Chinese patient reports, 2025–26). That usually includes the sedation, prep drugs and pre-procedure tests. If a polyp is removed or a biopsy taken, the total rises to a median of about CNY 2,850 (≈ USD 430). Foreign patients have no Chinese insurance, so the price before insurance is what they pay.

Insurance is a separate question, and the honest answer is that it rarely helps a visitor. Chinese basic medical insurance applies to foreigners who are employed in China. A Shanghai government guide says expats usually need to have lived in China for more than 180 days before they can buy commercial health insurance there. A new product for short-term inbound visitors, launched in Beijing in September 2026, covers accidents, medical payments and rescue; we found nothing saying it covers a planned test such as a colonoscopy. Do not assume that a policy bought before you travel will pay for a planned colonoscopy in China. Check each policy's wording individually, and plan to pay yourself. If you have a US or international plan, ask in writing whether it pays anything toward care outside your home country.

China is cheaper per procedure, but the trip has its own costs: flights, a hotel for the preparation day and recovery, and someone with you if you are sedated. If your US plan would cover a screening colonoscopy at USD 0, staying home is cheaper. China makes more sense if you face a large diagnostic bill or a long wait, or if you combine the colonoscopy with a full health checkup on the same visit.