The average US hospital charges approximately 4–5x the Medicare rate on their chargemaster list price. Private equity-owned hospitals average 7–12x. Urban academic medical centers average 5–8x. Rural hospitals average 3–5x.
What "markup" means
The markup ratio is calculated as: Hospital charge ÷ Medicare rate. A 4x markup means a procedure that Medicare pays $1,000 for is listed on the hospital's chargemaster at $4,000.
The chargemaster price is not necessarily what you pay — insured patients pay their plan's negotiated rate, which is typically lower. But uninsured patients are often billed the full chargemaster rate unless they negotiate or apply for financial assistance.
Average markups by procedure type
| Procedure category | Typical markup |
|---|---|
| Spinal surgery | 8–15x Medicare |
| Joint replacement (knee, hip) | 6–12x Medicare |
| Cardiac procedures | 5–10x Medicare |
| ER visits | 4–8x Medicare |
| General surgery (appendix, hernia) | 5–9x Medicare |
| CT/MRI imaging | 3–6x Medicare |
| Lab tests | 2–5x Medicare |
| Mammogram/preventive screening | 2–4x Medicare |
Why markups vary so much
Hospital location (urban vs. rural, high cost-of-living states), ownership type (private equity vs. nonprofit), market concentration (local monopoly vs. competitive market), and payer mix all affect list prices. Hospitals with more uninsured patients may actually charge less because they have fewer insured patients cross-subsidizing care.
Using markup to negotiate
The Medicare rate is your anchor. Most hospitals will settle at 1.5–3x Medicare for uninsured or self-pay patients when presented with a formal dispute letter citing the CMS benchmark. The key is making the ask in writing with specific CPT codes and rates.
- Get the itemized bill and identify each CPT code.
- Look up the Medicare rate for each code on BillKarma.
- Calculate the markup ratio for each line item.
- Dispute any charge over 3x Medicare in writing.
- Request the hospital's financial assistance policy if you're unable to pay.