A hospital bills a median of $293,234 for open-heart surgery. Medicare pays the hospital about $56,870 for it. That is not a rounding difference or a special case — it is the normal relationship between what a hospital charges and what actually changes hands. Across eight major surgeries and roughly 17,600 individual hospitals in Medicare's own payment records, the billed “sticker” runs five to nine times the amount Medicare pays the facility. The sticker is the one number almost nobody actually pays.
We pulled this straight from the CMS Medicare Provider Utilization and Payment data that powers the hospital-price tables on our procedure pages — the same federal dataset, aggregated across every reporting hospital. Here is the gap, procedure by procedure, and—more usefully—what the small print means for the number you end up owing.
The gap, procedure by procedure
Each row below is the median across all US hospitals that reported the procedure to Medicare. “Billed” is the hospital's covered charge — the chargemaster figure. “Medicare pays” is the Medicare program's payment to the facility. (More on why that word matters below.)
| Procedure | Setting | Median billed | Medicare pays (facility) | Gap |
|---|---|---|---|---|
| Open-heart surgery | Inpatient | $293,234 | $56,870 | 5.2× |
| Heart bypass (CABG) | Inpatient | $218,493 | $36,959 | 5.9× |
| Pacemaker implant | Inpatient | $100,361 | $18,310 | 5.5× |
| Gallbladder removal | Inpatient | $79,228 | $11,864 | 6.7× |
| Knee replacement | Inpatient | $75,777 | $12,754 | 5.9× |
| Hernia repair | Outpatient | $39,100 | $4,380 | 8.9× |
| Hip replacement | Outpatient | $37,174 | $4,963 | 7.5× |
| Cataract surgery | Outpatient | $13,397 | $1,729 | 7.8× |
Read the last column, not the middle ones. The exact dollar figures shift with how sick the average patient is and whether the operation is done as an admission or same-day — so don't read “hip looks cheaper than knee” as a real price. Hip and knee replacement actually share the same inpatient Medicare code, so their inpatient numbers are identical ($75,777 billed, $12,754 paid); hip simply shows up more often as an outpatient case, which pulls its blended figure down. The number that holds steady across every row is the multiple: the charge is always several times the payment.
That consistency is the real finding. You might assume the sticker gets more “honest” on a huge operation — that a $293,000 open-heart charge is closer to a real cost than a $13,000 cataract charge. It isn't. Even the most expensive surgery on the list is billed more than five times what Medicare pays for it.
Why the sticker is so much bigger than the check
The two numbers come from two completely different worlds. The billed charge comes from the hospital's chargemaster — a master price list the hospital sets itself, with little external constraint. Medicare's payment, by contrast, is set by the government in advance and has almost nothing to do with that list.
For an inpatient admission, Medicare pays through the Inpatient Prospective Payment System: every case is grouped into a diagnosis-related group (DRG), and each DRG has a national base payment adjusted for local wages. Outpatient procedures run through a parallel system of Ambulatory Payment Classifications (APCs). In both, the price is fixed by formula before the patient ever arrives, so a hospital can list any chargemaster number it likes and Medicare still pays the same administratively-set rate. CMS, Acute Inpatient PPS & outlier payments (42 CFR § 412.84)
There is one wrinkle worth knowing, because it explains why the sticker keeps climbing. For extraordinarily expensive cases, Medicare adds an “outlier payment,” and it estimates the case's cost by applying the hospital's own cost-to-charge ratio to its billed charges. Higher chargemaster numbers can nudge more cases over the outlier threshold — so hospitals have a built-in reason to keep inflating a list price that, for ordinary cases, no payer uses.
What the “Medicare pays” number is — and isn't
Two honest caveats before anyone takes the right-hand column into a billing office.
It's the facility fee only. These figures are what the hospital collects for the operating room, the room-and-board, the supplies. The surgeon and the anesthesiologist bill separately, under Medicare's Physician Fee Schedule. So the Medicare-paid column is the hospital's slice, not the all-in cost of your care — a real bill stacks a professional fee on top. (This is the same reason our procedure pages treat facility charges and total cost as different things.)
It's the program's payment, not the whole check the hospital receives. A Medicare patient still owes cost-sharing: the Part A inpatient deductible is $1,736 per benefit period in 2026, and Part B outpatient care carries a 20% coinsurance. CMS, 2026 Medicare Parts A & B premiums and deductibles Add that to the program payment and the hospital receives somewhat more than the column shows — but still a small fraction of the billed charge.
So what will you actually pay?
That depends entirely on how you're covered, and the answer is never simply “the billed amount” and never simply “the Medicare rate.”
If you have Medicare
You pay the cost-sharing above — the deductible and any coinsurance — not the chargemaster figure. For a straightforward inpatient surgery that often means the 2026 Part A deductible and little more on the facility side.
If you have commercial insurance
Your plan negotiates its own rate, and it lands between the two columns. Nationally, private insurers pay hospitals about 2.5 times Medicare rates for the same services — 254%, in the most recent RAND analysis — with wide variation by state and hospital market. RAND, Hospital Price Transparency Study (Round 5, 2024) So a knee replacement Medicare pays ~$12,750 for might be an allowed amount around $30,000 on a commercial plan — still far below the $75,000 sticker, and your out-of-pocket share is a slice of that allowed amount, not of the charge.
If you're uninsured or paying cash
You are the one person actually exposed to the chargemaster — and also the one with the most leverage to get off it. Three tools matter:
- The hospital's published cash price. Under the federal Hospital Price Transparency Rule, still in force in 2026 and tightened this year to require real historical dollar amounts, every hospital must post its discounted cash price and payer-negotiated rates in a machine-readable file. CMS, Hospital Price Transparency That cash price — not the sticker — is your real starting number.
- A Good Faith Estimate. If you're uninsured or self-pay, the No Surprises Act entitles you to a written cost estimate before scheduled care. It doesn't cap the price of an elective in-network operation, but it gives you a figure in writing to work from. CMS, No Surprises Act
- Financial assistance. Every nonprofit hospital must maintain a financial-assistance policy and cannot charge qualifying patients more than the amounts it generally bills insured patients. Income thresholds are set by each hospital and vary widely — commonly anywhere from 100% to 400%+ of the federal poverty level — so it's always worth asking. 26 CFR § 1.501(r)-4, Financial assistance policy
Don't walk in demanding the Medicare rate. Medicare's payment is often below a hospital's fully-loaded cost, which is part of why commercial rates run higher — ask for that and you'll get a polite no. Use the Medicare figure as a floor and a reality check: it tells you how much air is in the sticker, so a cash quote at, say, one-and-a-half times Medicare is a genuinely good deal, while anything near the chargemaster is a starting bid, not a bill.
Where this bites hardest
The gap matters most when you can least shop. For an emergency appendectomy you don't compare prices from a hospital bed — you review the invoice afterward, which is exactly when knowing the billed-versus-paid spread is worth the most. For a planned hysterectomy or a knee replacement, you have time to pull the hospital's cash price and a Good Faith Estimate first. And because two hospitals in the same city can bill wildly different chargemaster numbers for the identical operation, the billed figure on any one estimate tells you almost nothing until you anchor it against what the procedure is actually paid.
The takeaway is small and durable: when a surgery estimate lands, find the payment number underneath the charge. For these eight procedures the charge is 5 to 9 times the payment — and the payment, not the sticker, is where a real conversation about your bill begins.
Frequently asked questions
Does a higher billed charge mean a better or safer surgery?
No. The chargemaster is a self-set list price with no reliable link to quality or outcomes. Two hospitals can bill amounts that differ by tens of thousands of dollars for the same operation and be paid nearly the same by Medicare.
Can I ask a hospital to bill me the Medicare rate?
Generally no — Medicare rates are often below a hospital's stated cost, so hospitals won't extend them to self-pay patients. Aim instead for the published cash price or a negotiated rate somewhere above Medicare but far below the chargemaster.
Why is the “Medicare pays” figure so much lower than a real hospital bill I've seen?
Two reasons. It's the facility payment only — surgeon and anesthesia fees are billed separately — and it excludes your own cost-sharing (the Part A deductible or Part B coinsurance). The total the hospital collects is program payment plus your share, still well under the billed charge.
Do these numbers apply to cosmetic or dental surgery?
No. Cosmetic and most dental procedures aren't covered by Medicare, so there's no federal payment benchmark for them — their prices are set entirely by the market, which is why they're quoted as self-pay list prices rather than billed-versus-paid gaps.