Colonoscopy Cost Calculator
Estimate what a colonoscopy will cost you before you book it. Pick the facility type, the reason for the procedure, your coverage, and anesthesia, then see your out-of-pocket under preventive, Medicare, deductible-and-coinsurance, or self-pay math. National planning figures for 2026, built from published price data.
Every figure on this page is a national planning estimate, not a quote and not a medical recommendation. Prices vary by facility, insurer, and what the doctor finds. Confirm coding and coverage with your provider, the facility, and your insurance plan before you schedule, and discuss screening decisions with your clinician.
Estimate your cost
Choose the options that match your situation. All figures update live.
Screening turned diagnostic? Two scenarios
Federal guidance says polyp removal during a screening is part of the screening, so you should owe $0. But some insurers reclassify the procedure as diagnostic once a polyp is removed, which is how surprise bills like the $2,185 case reported by KFF Health News happen. If yours does, you would owe about $0.
Facility comparison for your choices
| Facility | Sticker price | Your out-of-pocket | Note |
|---|
What you are actually paying for
A colonoscopy bill is usually built from several line items, and facilities often quote only the base procedure. Here is what the national planning figures look like:
| Cost component | Planning figure | Detail |
|---|---|---|
| Procedure + facility fee (base, before add-ons) | $2,300 hospital / $1,472 surgery center / $1,265 office | Biggest driver; hospital facility fees average $1,530 |
| Conscious sedation (twilight) | $0 | Often bundled in the facility/physician fee |
| Monitored anesthesia care (propofol) | +$800 | Separate anesthesia provider; ASC lists quote $630-$1,008 |
| Polyp removal (CPT 45385) | +$350 | At least 40% of colonoscopies |
| Biopsy (CPT 45380) | +$250 | Tissue sample for testing |
| Pathology lab analysis (CPT 88305) | +$200 | Per specimen batch |
| Bowel prep kit | +$50 | Budget line item; sometimes not covered even under preventive rules |
Facility type is the biggest lever
The same procedure can cost more than twice as much depending on the building. A JAMA Health Forum analysis of insurer price transparency data found hospitals charged average facility fees of $1,530 for a colonoscopy, $1,760 with a biopsy, and $1,761 with polyp removal, versus $989, $1,034, and $1,030 at ambulatory surgery centers. In Massachusetts, commercial insurers paid an average of $2,527 for a colonoscopy with polyp removal at a hospital outpatient department, compared with $884 to $963 at a surgery center or physician office.
| Facility | Base sticker | With anesthesia care | Why |
|---|---|---|---|
| Hospital outpatient department | $2,300 | $3,100 | Highest facility fees (avg $1,530 per JAMA Health Forum study) |
| Ambulatory surgery center (independent) | $1,472 | $2,272 | Freestanding center: facility fees ~55% lower than hospitals |
| GI office endoscopy suite | $1,265 | $2,065 | Lowest typical prices (multiplier is a modeling assumption) |
Cost by region
Prices vary widely by state and metro area. The table below uses the same region multipliers as the calculator, applied to a self-pay cash price at an ambulatory surgery center with conscious sedation and no add-ons:
| Region | Multiplier | Surgery-center cash price |
|---|---|---|
| Midwest | 0.92× | $1,015.68 |
| South | 0.95× | $1,048.80 |
| Southwest | 1.0× | $1,104 |
| Florida | 1.05× | $1,159.20 |
| Northeast | 1.12× | $1,236.48 |
| West | 1.18× | $1,302.72 |
| New York metro | 1.28× | $1,413.12 |
| California | 1.32× | $1,457.28 |
Three worked examples
Example 1 — self-pay at a surgery center. No insurance, ambulatory surgery center in the Southwest, conscious sedation, no add-ons: sticker $1,472, cash self-pay price $1,104 after the 25% self-pay discount.
Example 2 — routine screening with commercial insurance. Same procedure as Example 1 but billed as a preventive screening on a qualifying commercial plan: your out-of-pocket is $0, with the plan paying an allowed $1,177.60.
Example 3 — diagnostic with a high deductible. Hospital outpatient department in the Northeast, monitored anesthesia care, polyp removal plus pathology, $2,000 deductible remaining, 20% coinsurance: sticker $4,088, your share $2,254.08.
CPT codes you will see on the bill
- 45378 — colonoscopy without intervention
- 45380 — colonoscopy with biopsy
- 45385 — colonoscopy with polyp removal
- Modifier 33 (commercial) or PT (Medicare) — marks a screening that converted, so cost-sharing is waived. A missing preventive modifier on a converted screening is a common reason for surprise bills.
How to lower your bill
- Choose an independent ambulatory surgery center over a hospital outpatient department when your doctor agrees it is appropriate.
- Ask for the self-pay cash price in writing before you schedule. Cash rates are often far below chargemaster list prices.
- Request a good-faith estimate. Federal rules require providers to give one to uninsured or self-pay patients.
- Confirm the facility, the physician, the anesthesia provider, and the pathology lab are all in your network.
- Ask how the facility codes a screening that converts to polyp removal, and whether the preventive modifier is attached.
- Budget for the bowel prep kit separately. Prep medication is sometimes not covered even under preventive rules.
Methodology and assumptions
- Base: $2,300 hospital-outpatient all-in base, anchored to the ~$2,400 national average uninsured colonoscopy and JAMA facility-fee data.
- Facility multipliers: hospital 1.00x, ambulatory surgery center 0.64x, office suite 0.55x (office multiplier is a modeling assumption).
- Negotiated allowed rate: 80% of sticker. Self-pay discount: 25% (published self-pay discounts range 10-30%). Medicare screening coinsurance with polyp removal: 15%.
- Adders: polyp removal $350, biopsy $250, pathology $200, monitored anesthesia care $800, bowel prep $50.
- These are national planning figures for 2026, not quotes. See the calculator notes and FAQ for the full billing-rule explanations.
Frequently asked questions
Without insurance, a colonoscopy in the United States typically costs between $1,250 and $4,800, with national averages around $2,400. The facility you choose moves the number more than anything else: a hospital outpatient department base is about $2,300, an independent ambulatory surgery center about $1,472, and a GI office suite about $1,265 in this calculator's planning figures. Extras such as polyp removal, biopsy, pathology, and deeper anesthesia add on top. These are planning estimates, not quotes.
Facility fees are the main reason. A JAMA Health Forum analysis of price transparency data found hospitals charged average facility fees of $1,530 for a colonoscopy, versus $989 at ambulatory surgery centers, with hospital fees roughly 54 to 61 percent higher across procedure codes. A 2023 study put the average ambulatory surgery center colonoscopy at $1,136 versus $1,608 in a hospital outpatient department. If you are paying out of pocket or have a high deductible, the building matters more than the doctor.
Usually, yes, if it is a true screening and your coverage qualifies. Under the Affordable Care Act, commercial plans must cover USPSTF-recommended colorectal cancer screening with no cost-sharing for average-risk adults ages 45 to 75 at an in-network facility. That is why this calculator shows $0 out-of-pocket for a routine screening with commercial insurance. The free coverage does not automatically apply to surveillance or diagnostic colonoscopies, out-of-network facilities, or plans not subject to the rule.
This is the number one surprise-bill scenario. Federal guidance says polyp removal during a screening is part of the screening, so no cost-sharing should apply, and this calculator shows $0 as the guideline-compliant figure. In practice, some facilities or insurers reclassify the procedure as diagnostic once a polyp is removed, which can produce a bill like the $2,185 one reported by KFF Health News. This calculator shows both numbers when you check polyp removal under screening: $0 if your insurer follows the guidance, and the reclassified estimate if it does not. Ask your facility how it codes converted screenings before you book.
Medicare waives the deductible for a screening colonoscopy, so a clean screening is $0. If the doctor finds and removes a polyp, Medicare applies 15 percent coinsurance of the allowed amount for the doctor's fee, which typically comes out to a few hundred dollars. This calculator models exactly that: for example, a Medicare screening at a surgery center with a polyp removed estimates $176.64 in coinsurance. Confirm the details with your Medicare plan before the procedure.
Screening is routine testing with no symptoms, usually every 10 years for average-risk adults, and it is the one that qualifies for $0 preventive coverage. Surveillance is follow-up testing after polyps were found before, on a shorter interval, and insurers usually bill it as diagnostic, meaning your deductible and coinsurance apply. Diagnostic means the doctor ordered it because of symptoms, and it is also billed as diagnostic. In this calculator, choosing surveillance or diagnostic routes the estimate through deductible and coinsurance math.
In this calculator's planning figures: polyp removal adds $350, a biopsy adds $250, and pathology lab analysis adds $200. Polyp removal shows up in at least 40 percent of colonoscopies, so do not treat the base price as the final price. Ask whether a quote includes these line items, because some facilities quote only the base procedure and bill the add-ons separately.
Conscious sedation, often called twilight sedation, is frequently bundled into the facility or physician fee, which is why this calculator adds $0 for it. Monitored anesthesia care with propofol uses a separate anesthesia provider and costs more: one ambulatory surgery center price list quotes $630-$1,008, and this calculator uses $800 as a planning figure. Some plans also cover the two anesthesia types differently, so check with your insurer.
They describe what was done: 45378 is a colonoscopy without intervention, 45380 is a colonoscopy with biopsy, and 45385 is a colonoscopy with polyp removal. For a screening that converts, billing guidance expects a preventive modifier such as 33 for commercial plans or PT for Medicare to be attached so cost-sharing is waived. If your explanation of benefits shows one of these codes without the preventive modifier on what you thought was a free screening, that missing modifier is often the reason for the bill.
Six moves that actually work: choose an independent ambulatory surgery center instead of a hospital outpatient department; ask for the self-pay cash price in writing before you schedule, since cash rates are often far below chargemaster list prices; request a good-faith estimate, which federal rules require providers to give uninsured patients; confirm the facility, physician, anesthesia provider, and pathology lab are all in your network; ask how the facility codes a screening that converts to polyp removal; and budget for the bowel prep kit separately, since prep medication sometimes is not covered even under preventive rules.
No. Every number here is a national planning figure built from published 2026 price ranges, payer studies, and stated modeling assumptions, not a quote from any provider. Real prices vary by facility, insurer, region, and what the doctor finds during the procedure. Use the estimate to compare options and ask better questions, then get an itemized written estimate from the facility and confirm coverage with your insurance plan before you schedule.
The U.S. Preventive Services Task Force recommends screening for average-risk adults from age 45 through 75. That age range is also what triggers the Affordable Care Act's no-cost-sharing rule for screening colonoscopies on qualifying plans. People with a family history of colorectal cancer or other risk factors may need to start earlier or screen more often, so discuss your personal schedule with your primary care clinician or a gastroenterologist. This tool estimates costs only and does not give medical advice.
Data: national average and ranges from GoodRx via MyMedicineAdvisor and CoveredUSA (2026); facility-fee comparisons from JAMA Health Forum / Johns Hopkins via Fierce Healthcare and Becker's ASC Review; anesthesia and pathology price lists from MNGI; screening-coverage rules from KFF, KFF Health News, and CMS preventive-services FAQs. Full source list in SOURCES.md.
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