The word on the order decides the bill
The same procedure, performed identically, is billed one of two ways.
Screening. You have no symptoms and this is routine cancer screening at the recommended interval. Under an insurance plan this is preventive care and is supposed to cost you nothing.
Diagnostic. You have symptoms, a history, or a finding being followed up. This is regular care, and your deductible and coinsurance apply.
Nobody explains this at booking, and the coding is decided by the ordering office. Before the procedure, ask in these exact words:
“Is this being ordered and coded as a screening colonoscopy or a diagnostic one?”
If the answer is screening, ask them to confirm it in writing or in the portal, because that is what you will point to if a bill arrives anyway.
One procedure, four possible bills
| Who bills | For what | Where it goes wrong |
|---|---|---|
| The facility | The room, equipment, staff. A hospital outpatient department adds a facility fee; an ambulatory surgery center bills differently | The single biggest price difference |
| The gastroenterologist | The professional fee | Usually in network if you chose them |
| Anesthesia | Sedation, billed by a separate group | The most common out-of-network surprise |
| Pathology | Reading anything removed, billed by a lab | Arrives weeks later, from a name you do not recognise |
Ask the scheduling office one question that covers all four:
“Are the facility, the physician, the anesthesia group and the pathology lab all in network with my plan?”
Medicare works differently
Medicare covers screening colonoscopies, and if the provider accepts assignment you pay nothing for the screening test itself.
The wrinkle is what happens when something is found. For procedures resulting from a colorectal cancer screening, Medicare coinsurance is being gradually reduced until it is fully waived for dates of service on or after January 1, 2030. So a Medicare patient who has a polyp removed during a screening today may still owe a reduced coinsurance, and that share shrinks each year.
Since January 1, 2023, Medicare also treats a follow-on screening colonoscopy after a covered positive stool-based test as part of a complete screening.
If you have no insurance
The preventive rules above are insurance rules, so they do nothing on their own for an uninsured patient. Two things do.
New York’s hospital financial assistance law, if the procedure is performed and billed by a hospital: nothing out of pocket at or below 200% of the federal poverty level, capped at 10% of the Medicaid rate to 300% and 20% to 400%. Apply before the procedure if you can. The procedure.
A written good faith estimate, which you are entitled to before scheduled self-pay care, and which should name all four billers rather than just the facility. How that works.
And before either: check whether you are eligible for coverage you have not applied for. Medicaid and the Essential Plan accept applications in any month. The ten-minute check.
Getting a number in advance
Ask for the CPT code, and ask whether it is the screening code or the diagnostic one.
Call the facility: “What is the cash price for CPT [code], and does that include anesthesia and pathology, or are those billed separately?”
Check the hospital’s published price file for the same code. How to read one.
Questions people ask
Is a screening colonoscopy free?
Under an insurance plan it is preventive care and is supposed to cost you nothing. A diagnostic colonoscopy, ordered because of symptoms or a finding, is regular care with your normal cost sharing.
They removed a polyp. Do I now owe money?
Not on a plan-covered screening. Federal guidance says plans may not impose cost sharing for polyp removal during a screening colonoscopy. If you were charged, ask the plan to reprocess.
My stool test was positive and now I need a colonoscopy. Is that covered?
Yes, with no cost sharing. A colonoscopy after a positive non-invasive stool test completes the screening rather than starting a new episode.
Why did I get four different bills?
Facility, gastroenterologist, anesthesia and pathology bill separately. Anesthesia is the most common out-of-network surprise, so ask about it specifically before the date.
How is Medicare different?
Medicare covers the screening at no cost when the provider accepts assignment, but coinsurance on procedures arising from the screening is still being phased out and disappears fully for dates of service on or after January 1, 2030.
What if I have no insurance at all?
Ask for a written good faith estimate covering all four billers, and if a hospital is doing the billing, apply for financial assistance under New York’s law before the procedure.
Sources
- CMS — ACA implementation FAQs, Set 12 (polyp removal during screening) (checked 2026-09-09)
- CMS — FAQs about Affordable Care Act implementation, Part 51 (checked 2026-09-09)
- Medicare.gov — colonoscopies (screening) (checked 2026-09-09)
More in What It Costs: How Every Medical Bill in New York Is Assembled
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- What Urgent Care Costs Without Insurance, and the Sign That Changes It — Two storefronts on the same block bill completely differently: one is an urgent care center, the other is a hospital emergency department annex. How to tell before you walk in.
- What a Therapy Session Costs in New York — In New York, therapy at a state-licensed facility cannot cost you more than your plan's primary care copay. Session billing, sliding scales and superbills.
This page explains how the system works. It is not medical advice. More.