# Colonoscopy: Cost, Coverage, and What to Expect

Source: https://ourhealthnetwork.com/procedure-costs/colonoscopy
Last reviewed: 2026-04-17
Data: CMS Hospital and Outpatient pricing, CPT/HCPCS code mapping

## Quick answer

Medicare pays physicians about $187 on average for a colonoscopy, but the total facility bill typically runs $1,500 to $5,000 on commercial insurance, with out-of-pocket costs ranging from $0 for screening to $1,500+ if polyps are removed.

## What it is

A colonoscopy is a 30 to 60 minute exam where a gastroenterologist uses a flexible scope with a camera to look at the inside of your large intestine (colon and rectum). You are sedated for the procedure and usually go home the same day. It is the gold standard for colon cancer screening because the doctor can both find and remove precancerous polyps in one session.

**What the appointment involves:**
- 1 to 2 days of prep at home (liquid diet, laxative solution to empty the colon)
- 30 to 60 minute procedure under IV sedation (propofol or moderate sedation)
- 1 to 2 hours of recovery before discharge
- A driver to take you home (you cannot drive after sedation)
- Results the same day for the visual exam; biopsy/pathology results in 5 to 10 days

Within the colonoscopy family, there are seven common billing codes. The simplest is a diagnostic exam with no tissue work. More common are colonoscopies where the doctor takes a biopsy or removes polyps using a wire snare, electrical cautery, or ablation. Endoscopic mucosal resection (EMR) is used for larger or flatter polyps that cannot be snared in one pass. Medicare payment differences between variants reflect RVU assignments and coding structure, not clinical complexity or procedure size.

Most patients feel normal within 24 hours, aside from some bloating or cramping. You can return to work the next day.

## When it is done

Colonoscopy is the most thoroughly studied screening test for colon cancer, and it also serves as a diagnostic tool when symptoms appear. The US Preventive Services Task Force recommends screening start at age 45 for average-risk adults and continue every 10 years until age 75.

**Your doctor may recommend a colonoscopy when:**
1. You turn 45 and are due for baseline screening (every 10 years if normal)
2. You have a first-degree relative with colon cancer or advanced polyps
3. You have rectal bleeding, blood in stool, or unexplained iron-deficiency anemia
4. You have chronic diarrhea, constipation, or a change in bowel habits
5. A prior colonoscopy found polyps (surveillance follow-ups are every 3 to 5 years)
6. You have inflammatory bowel disease (Crohn's or ulcerative colitis) needing monitoring

Alternatives exist but have tradeoffs. Stool-based tests like Cologuard or FIT are cheaper and need no prep, but they miss some cancers and require a follow-up colonoscopy if positive. CT colonography (virtual colonoscopy) avoids sedation but cannot remove polyps, so any finding means a second procedure. Flexible sigmoidoscopy sees only the lower third of the colon.

## What you pay

Colonoscopy cost depends on three things: your insurance, whether it is coded as screening or diagnostic, and whether the procedure happens at a hospital or an ambulatory surgery center (ASC). Medicare pays the physician roughly $187 on average across all seven colonoscopy codes, but the facility bill (the room, nurses, equipment, recovery) is separate and typically runs $600 to $1,800 on top.

**If you are on Medicare:**
- Screening colonoscopy (code G0105 or G0121): $0 deductible and $0 coinsurance every 10 years (or every 2 years for high risk)
- Diagnostic colonoscopy: 20% coinsurance after the Part B deductible ($257 in 2025)
- If a polyp is removed during a screening: coinsurance still applies, but it drops to 15% in 2025 under a phased rule
- Medicare Supplement (Medigap) plans typically cover the coinsurance portion

**If you have commercial insurance:**
- Preventive screening (age 45+) is covered 100% under the ACA with no deductible, no copay
- Diagnostic colonoscopy (symptoms, follow-up, family history) is subject to deductible and coinsurance
- Typical patient responsibility on a diagnostic: $300 to $1,500 depending on plan
- If polyps are removed during a screening, federal rules now require plans to still treat it as preventive for in-network providers (this was not true before 2022)

**If you are uninsured or paying cash:**
- ASC cash-pay price: $1,200 to $2,500 bundled (physician + facility + anesthesia)
- Hospital cash-pay price: $2,500 to $5,000 bundled, sometimes higher
- Hospital chargemaster (the sticker price on the bill): $3,000 to $8,000; always negotiate this down
- Many ASCs and GI groups offer bundled self-pay packages; ask for the cash price before booking
- Community health centers and some hospital charity programs cover screening for low-income patients

## Anatomy of the bill

A colonoscopy bill usually has 3 to 5 separate charges, which arrive from different entities over 4 to 6 weeks. Knowing what each line is helps you catch errors and out-of-network surprises.

- **Facility fee:** The largest line item. Covers the room, nurses, scope sterilization, and recovery. Hospital outpatient departments charge 20% to 35% more than ambulatory surgery centers for the same procedure.
- **Physician fee:** What the gastroenterologist bills for performing the scope. Medicare pays about $187 on average; commercial rates usually run 2x to 3x that.
- **Anesthesia:** Billed separately by the anesthesia group, often out of network even when the hospital is in network. Typical charge is $400 to $1,200 for propofol sedation, usually negotiated down to $150 to $400 by insurance.
- **Pathology:** If tissue was removed (polyp or biopsy), a pathologist examines it and bills separately. Each specimen runs $100 to $300 on commercial insurance. You will not know this charge is coming until after the procedure.
- **Coverage note (screening vs diagnostic):** The same procedure can appear on your bill as preventive ($0 OOP) or diagnostic ($300 to $1,500 OOP) depending on a single coding decision. If polyps were removed during a screening, ACA-compliant commercial plans must still treat it as preventive for in-network providers. Check your Explanation of Benefits carefully.

## Cost by state

State-level Medicare payments for colonoscopy are remarkably consistent. Across 50 states, the average physician payment ranges from about $138 in Mississippi to $203 in New York, a spread of under $65. This is because CMS adjusts payments by regional wage indexes but colonoscopy is a short procedure with limited overhead variation.

**Where providers cluster:** California (393K services, 3,251 providers), Texas (333K, 2,524 providers), and Florida (303K, 2,711 providers) lead in volume because of large Medicare populations. New York, Illinois, and New Jersey follow.

**Why state matters for your out-of-pocket:**
- Regional wage index: Higher-cost urban areas (NY, MA, CA, NJ) pay physicians more under Medicare
- Facility density: States with more ASCs have lower average facility fees (Texas, Florida, Arizona)
- Commercial rates: Employer-negotiated rates vary far more than Medicare; a Boston colonoscopy can bill 3x what the same procedure bills in rural Tennessee
- Screening laws: Most states now ban cost-sharing on screening colonoscopy, but follow-up rules vary

The state figures shown reflect surgeon/physician fees only on Medicare. Commercial and cash prices have much wider variation within any single state based on hospital vs. ASC setting.

## Office vs facility

Colonoscopy is almost always done in a facility setting, not a physician office. Medicare data shows 2.99 million services in facility settings (hospital outpatient departments and ambulatory surgery centers) versus only 138,000 in office-based settings. Office-based colonoscopy is uncommon because sedation requires monitoring equipment and recovery space.

The real choice for most patients is between a hospital outpatient department and an ambulatory surgery center (ASC). ASCs typically bill 20% to 35% less in facility fees for the same procedure.

- **When an ASC makes sense:** Routine screening or surveillance in a healthy adult; you want the lowest out-of-pocket cost; your doctor has privileges at both settings
- **When a hospital setting makes sense:** You have serious heart or lung disease requiring anesthesiologist-level monitoring; you have a high bleeding risk or take blood thinners; your case involves a large polyp that might need surgical backup

Call both settings your doctor uses and ask for a self-pay or good-faith estimate. The same physician performing the same procedure can generate very different bills depending on where the case is scheduled.

## Who performs the procedure

Gastroenterologists perform the vast majority of colonoscopies in the United States. Medicare data shows 12,362 gastroenterologists billing for the procedure, accounting for roughly 85% of services. They train for 3 additional years after internal medicine residency specifically on endoscopy, and most perform 20 to 40 colonoscopies per week.

The rest of the market breaks down as:
- **General surgeons (2,272 providers, ~8% of services):** Often perform colonoscopies in smaller hospitals or rural areas where a gastroenterologist is not available
- **Colorectal surgeons (850 providers, ~4% of services):** Focus on complex cases, follow-up after colon surgery, and patients with rectal disease
- **Internal medicine and family practice physicians (1,111 combined):** A small group trained in endoscopy who perform colonoscopies in rural or underserved areas

Quality research shows the single best predictor of a high-quality colonoscopy is the physician's adenoma detection rate (ADR), not the specialty credential. Gastroenterologists as a group tend to hit higher ADR benchmarks, but individual skill varies. Ask your doctor what their ADR is. A rate above 25% in men and 15% in women is considered acceptable; higher is better.

## How to shop for the best price

Colonoscopy is one of the most shoppable procedures in healthcare because bundled packages are widely available. Use this checklist:

1. **Confirm screening vs. diagnostic coding before the procedure.** Ask your doctor's office in writing which CPT code they plan to bill. Screening (G0105/G0121) is $0 OOP under the ACA; diagnostic is not. This single question can save you $500 to $1,500.
2. **Request a Good Faith Estimate** (federal law under the No Surprises Act). Providers must give uninsured and self-pay patients a written estimate within 3 business days of request.
3. **Verify every billing party is in-network:** the gastroenterologist, the facility, the anesthesia group, and the pathologist. Anesthesia and pathology are the most common out-of-network surprises.
4. **Compare hospital vs. ASC.** Most gastroenterologists work at both. Call both settings, ask for the cash price or GFE, and pick the lower one if clinically appropriate.
5. **Ask about bundled self-pay rates.** Many ASCs advertise flat-rate colonoscopy packages ($1,500 to $2,500) that cover physician, facility, and anesthesia in one payment.
6. **If you have a high-deductible plan,** the bundled cash price is often cheaper than running it through insurance early in the year.

**Warning signs to watch for:** a facility fee over $3,500 at an ASC, anesthesia charges over $1,500, a pathology bill from a lab you were never told about, or a screening recoded as diagnostic without a written explanation. Any of these warrant a call to your insurer and the billing office.

## Surprise billing risks

Colonoscopy is a high-surprise-bill procedure because 3 to 5 entities each submit separate charges, and not all of them are checked for network status ahead of time.

**Most common surprise-billing sources for this procedure:**
- **Anesthesia:** The anesthesiologist or CRNA often works for a separate staffing group; they may be out of network even when the hospital is in network
- **Pathology:** Polyps or biopsies are sent to a lab you do not choose; that lab bills separately and may be out of network
- **Facility upcoding:** A procedure scheduled as screening gets recoded as diagnostic after polyps are removed, flipping your cost-share from $0 to hundreds of dollars
- **Assistant physician fees:** Occasionally a fellow or second physician bills for the case

**If you get a surprise bill, here is what to do:**
- File a No Surprises Act dispute if the out-of-network provider was at an in-network facility (federal protection since 2022)
- Call your insurer and ask them to reprocess the claim at the in-network rate
- Appeal in writing if a screening was recoded as diagnostic; ACA rules require in-network plans to cover screening-plus-polypectomy as preventive
- Request an itemized bill and check for duplicate charges or unbundled line items
- Negotiate pathology and anesthesia bills directly; self-pay settlements of 40% to 60% off the charge are common

## Total recovery cost

Recovery from a colonoscopy is fast. Most patients feel normal within 24 hours, with only mild bloating, gas, or cramping. You can eat normally the same evening and return to work and driving the next day.

**Add-on costs to budget for:**
- Prep kit: $15 to $80 for the laxative solution (MiraLAX-based is cheapest, SUPREP is pricier); some plans cover prep as preventive, others do not
- Transportation: You must have a driver because of sedation; rideshare or a family member
- Time off work: 1 day total for most patients (half day for prep the evening before, full day of procedure and rest)
- Pathology bills: $100 to $300 per specimen if polyps or biopsies were taken (arrives 2 to 4 weeks later)
- Follow-up visit: Rarely needed for routine cases; pathology results are usually communicated by phone or portal

**Realistic total episode cost:** A routine screening colonoscopy with ACA coverage usually costs $0 to $50 out of pocket (mainly the prep kit). A diagnostic colonoscopy with polyp removal on commercial insurance typically runs $400 to $2,000 out of pocket, depending on deductible. Cash-pay at an ASC including prep, procedure, anesthesia, and pathology generally totals $1,500 to $3,500. The sticker price on your Explanation of Benefits will look far higher ($3,000 to $8,000 billed) because commercial rates and chargemaster numbers are set well above what anyone actually pays.

## Variants of this procedure

- Flexible Sigmoidoscopy with Biopsy
- Diagnostic Colonoscopy
- Colonoscopy with Biopsy
- Polyp Removal with Cautery
- Colonoscopy with Polyp Removal (Snare)
- Polyp Ablation
- Endoscopic Mucosal Resection (EMR)

## Frequently asked questions

### How much does a colonoscopy cost with insurance?

If it is coded as a screening colonoscopy and you are 45 or older, most ACA-compliant commercial plans cover it 100% with $0 out of pocket. If it is coded as diagnostic (symptoms, family history, follow-up), you typically pay $300 to $1,500 depending on your deductible and coinsurance. The single biggest variable is the screening vs. diagnostic code, not the insurer.

### Does Medicare cover a colonoscopy?

Yes. Medicare covers screening colonoscopy every 10 years (every 2 years if you are high risk) with $0 coinsurance. Diagnostic colonoscopy is subject to 20% coinsurance after the Part B deductible ($257 in 2025). If a polyp is removed during a screening, the coinsurance drops to 15% in 2025 under a phased rule that reaches $0 by 2030.

### How long does recovery take?

Most patients feel fully normal within 24 hours. You can eat the same evening, return to work the next day, and resume exercise within 1 to 2 days. You cannot drive on the day of the procedure because of sedation, so plan for a driver.

### Is a colonoscopy outpatient or does it require a hospital stay?

It is strictly outpatient. The procedure takes 30 to 60 minutes, with 1 to 2 hours of recovery before discharge. Total time at the facility is usually 3 to 4 hours from check-in to going home. You do not stay overnight unless a rare complication occurs.

### What is the difference between a diagnostic colonoscopy and one with polyp removal?

A diagnostic colonoscopy (code 45378) is a visual exam only. A colonoscopy with polyp removal uses a wire snare (45385), cautery (45384), or EMR (45390) to take out precancerous growths. Polyp removal adds $50 to $300 to the physician fee and triggers a pathology bill. It does not change the screening-vs-diagnostic coding for insurance purposes under current ACA rules.

### How can I avoid a surprise bill?

Confirm in writing whether the procedure will be billed as screening or diagnostic. Verify the gastroenterologist, facility, anesthesia group, and pathology lab are all in your network. Request a Good Faith Estimate at least 3 days before the procedure. If a surprise bill still arrives, dispute it under the No Surprises Act.

### What is the cheapest way to get a colonoscopy?

For uninsured patients, the cheapest route is a bundled self-pay package at an ambulatory surgery center, typically $1,200 to $2,500 total. Community health centers and some hospital charity programs offer free or sliding-scale screening for low-income patients. If you have high-deductible insurance, compare the bundled cash price to your negotiated rate because the cash price is sometimes lower.

### Where does this cost data come from?

The Medicare figures on this page come from the CMS Medicare Physician and Other Supplier Public Use File, which reports what Medicare paid physicians for each procedure code across 3.1 million services and 16,427 providers. Commercial and cash-pay ranges are estimates based on typical market rates and are not a guarantee of what you will pay.

## Related

- [All procedure cost concepts](https://ourhealthnetwork.com/procedure-costs)
- [Find specialists who perform this procedure](https://ourhealthnetwork.com/find-doctors)
- [Insurance plans that cover this procedure](https://ourhealthnetwork.com/tools/insurance-matcher)