CMS Price Transparency Data

Colonoscopy (diagnostic)

Facility: Mercy Hospital St Louis

Billing Code: 45378 (CPT)

The BaseRate · fair price high confidence

A fair price for this

$693

about 0.7× the $950 Medicare rate · typically $583–$1,539

modeled estimate · not a bill or quote

What this hospital charges insurers

$1,241

Well above the fair price

about $548 over the fair price · 1.3× Medicare

Medicare pays $950 Fair price $693 This hospital $1,241 Cash price $1,276 Hospital's list price $1,964

How we calculate the fair BaseRate →

How this hospital compares to other MO hospitals

Highest price of the 9 MO hospitals we have prices for — worth calling around.

Cheapest $158 Priciest $1,241

Black dot = this hospital, among the 9 MO hospitals with a price for this procedure. Full list below.

A fair price for a Colonoscopy (diagnostic) is about $693 (about 0.7× the $950 Medicare rate). Mercy Hospital St Louis charges insurers about $1,241, or about $1,276 in cash — well above the fair price. Located in Saint Louis, MO.

This price is above the fair BaseRate — you may be able to pay less

Ask the hospital for the cash / self-pay price, check whether you qualify for financial assistance, or negotiate the bill down toward the fair price of about $693. Many patients pay well below the first number they’re quoted — the checklists below walk you through it.

What each insurance company pays

Which insurers have negotiated a price with this hospital for this procedure — and which haven’t.

5 of 6 major insurers have a published price at this hospital

✓ UnitedHealthcare✓ Blue Cross Blue Shield✓ Aetna✓ Cigna✓ Humana Kaiser Permanente

Crossed out = this hospital hasn’t published a negotiated price for that insurer for this procedure. It doesn’t necessarily mean they aren’t accepted — ask your insurer.

Insurance company	Price range	vs. Medicare
UnitedHealthcaremajor	$777 - $847	82%
Blue Cross Blue Shieldmajor	$171 - $2,125	18%
Aetnamajor	$82 - $855	9%
Cignamajor	$568 - $1,129	60%
Humanamajor	$847	89%
Ambetter (Centene)	$341 - $401	36%
HealthLink	$543 - $1,711	57%
Medica	$329 - $1,004	35%
+ 39 smaller / regional plans	$171 - $1,711

Government programs also on file: Medicare, Medicaid, Military & VA.

Excludes 6 rental-network / third-party entries (e.g. Multiplan, PHCS) — these are pricing networks, not insurers.

Self-Pay How to get the cash price

Tell the billing desk you want to be billed as self-pay — not through insurance — before your visit.
Ask for the cash / prompt-pay discount in writing, with the exact price (about 1,276), before you agree to anything.
Get it in writing that they won’t also bill your insurance, so the cash price is what you owe.
Check the CPT code on your bill matches exactly: 45378.

Insurance Before you use insurance

Call your insurance company to confirm Mercy Hospital St Louis is in-network.
Ask your insurer whether prior approval is required for CPT code 45378.
Confirm the doctor or provider is in-network too — not just the hospital building.
Check your Explanation of Benefits against the hospital’s final itemized bill.

Estimate your out-of-pocket cost

A rough estimate of what you’d pay with insurance (deductible + coinsurance) versus paying the cash price yourself.

How you’d pay

Deductible left to meet ($)

Your coinsurance (%)

Enter your details and press estimate to compare.

Other Procedures at Mercy Hospital St Louis

Compare: Colonoscopy (diagnostic) at other MO hospitals

Insurance negotiated median for the same procedure, sorted lowest first.