A federal law, the No Surprises Act, protects you from some of the worst US medical bills.
Surprise bills (with insurance)
Most health plans are covered. You should only pay your normal in-network share for:
Emergency care, even at an out-of-network hospital.
Care from an out-of-network doctor at an in-network hospital or surgery center, for example an anesthesiologist you did not choose.
A bill that charges you more for these is called balance billing, and it is usually not allowed. Ground ambulances are not covered by this federal rule, though some states protect you. This differs by state.
Price estimates (no insurance, or paying yourself)
If you do not have insurance, or choose not to use it, you have the right to a good faith estimate: a written price before care.
Ask for it when you book: "I'm paying myself. Please give me a good faith estimate."
If you book at least 3 business days ahead, the provider usually must give it to you.
If the final bill is at least $400 more than the estimate, you can dispute it.
The federal No Surprises Help Desk is 1-800-985-3059. It has help in many languages. You can also file a complaint online at cms.gov/nosurprises.
Medical debt and your credit report
Your credit report affects renting, loans and phone plans (see the money guides).
A 2025 federal rule to remove all medical debt from credit reports was canceled by a court in July 2025, so it does not apply.
The three big credit bureaus have their own policy: paid medical debt is removed, medical debt under $500 is not shown, and new medical debt is not reported for one year, which gives you time to fix it with your insurer.
Some states have their own stronger rules. This differs by state.
If a collector contacts you
Do not pay at once. Ask for a validation notice that shows who you owe and how much.
Check it against your EOB and bills.
If you do not owe it, dispute it in writing with the collector and with the credit bureaus.
You can still apply for the hospital's financial assistance in many cases.
Paying a surprise bill without asking if the No Surprises Act applies.
Not asking for an estimate before planned care.
Ignoring a collector's letter. Answer in writing and keep copies.