What is a surprise medical bill?
A surprise medical bill is a charge you didn't reasonably expect — usually because the provider was out-of-network when you had no practical way of knowing, or because the final bill came in far higher than the price you were quoted. Historically, surprise bills hit patients hardest after emergency room visits, air ambulance transports, and procedures where an out-of-network anesthesiologist or pathologist got involved during an otherwise in-network surgery.
In January 2022, the federal No Surprises Act took effect and changed the rules. It created two strong protections for patients:
- Balance-billing ban for insured patients — out-of-network providers in emergency situations and at in-network facilities can no longer bill you for more than your in-network cost-sharing. Disputes between the insurer and the provider are routed through the federal Independent Dispute Resolution (IDR) system — patients are kept out of it.
- Good Faith Estimates for self-pay patients — if you are uninsured or choose not to use your insurance for a scheduled service, the provider must give you a written Good Faith Estimate (GFE) of the expected cost before the service. If the final bill comes in $400 or more above the GFE for any single provider, you can dispute the difference through the federal Patient-Provider Dispute Resolution (PPDR) process.
The volume of disputes has grown sharply. The federal IDR portal received 1.2 million disputes in H1 2025 alone — doubled year over year (Georgetown CHIR, 2025). That's both sides (patients and providers/insurers) flooding the system because the process actually works. Yet most eligible patients still don't know they have this right.
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Check my bill vs estimate — freeYour rights under the No Surprises Act
The No Surprises Act (Public Law 116-260, Division BB, Title I) is a federal statute. It applies nationwide, preempts weaker state laws, and is enforced by HHS, the Department of Labor, and the Department of the Treasury jointly.
Right to a Good Faith Estimate
If you are uninsured or self-pay, providers must give you a written GFE at least 3 business days before a scheduled service (or within 1 business day if the service is scheduled fewer than 3 business days out). The GFE must include expected charges, diagnostic codes, and the provider's billing information. Ask for it in writing. If the provider refuses, file a complaint with CMS directly through the No Surprises Help Desk.
Right to dispute bills $400+ over the GFE
Under 45 CFR §149.620, if any single provider's final bill exceeds their Good Faith Estimate by $400 or more, you can file a Patient-Provider Dispute Resolution (PPDR) claim. You have 120 calendar days from the date you received the bill. The $25 administrative fee is refunded if you win. A federally certified Selected Dispute Resolution (SDR) entity reviews both sides and issues a binding determination.
Right to emergency-care protection (insured)
If you used insurance and the bill is for emergency care or for services at an in-network facility where an out-of-network provider was involved, you are protected from balance billing. You owe only your in-network cost-sharing. If a provider sends you a balance bill anyway, it is unlawful — report it to CMS and your state insurance department.
Right to a transparent disclosure notice
Providers and facilities must post a one-page disclosure summarizing No Surprises Act protections in their waiting rooms, on their websites, and at check-in. If you never received this notice before a disputed service, mention that fact in your PPDR filing — it strengthens your claim.
Step-by-step: filing a PPDR dispute
Compare your final bill to your Good Faith Estimate
Pull out the GFE you received before the procedure and line it up against the final bill. Calculate the difference. PPDR eligibility requires the difference to be $400 or more for any single provider. If multiple providers billed you (hospital + anesthesiologist + radiologist, for example), each is evaluated separately — and each $400+ overage is its own dispute.
Confirm you were self-pay or uninsured for the service
PPDR under the No Surprises Act applies when the patient was self-pay or uninsured for the specific service. If insurance processed the claim, the correct dispute pathway is IDR — which happens between the insurer and provider, not you. If you were on a cash-pay plan or opted not to use insurance, PPDR is the right channel.
Gather your documents
You will need: (a) the signed Good Faith Estimate, (b) the final itemized bill, (c) proof of delivery (the date you received the bill — envelope postmark, portal timestamp, or email header), (d) any communications with the provider about the overage, (e) the $25 administrative fee payment information. Keep copies of everything.
File Form CMS-10780 within 120 days
Log in to the federal NSA Independent Dispute Resolution portal at nsa-idr.cms.gov. Complete Form CMS-10780 with patient information, provider information, the GFE amount, the billed amount, and upload your supporting documents. Submission must be within 120 calendar days of receiving the bill. Late filings are dismissed with no appeal.
Respond to the SDR within their deadlines
A certified Selected Dispute Resolution entity is assigned within 3 business days. They will contact both you and the provider for additional information and position statements. Typical response windows are 10 business days. Missing an SDR deadline usually results in the dispute being resolved against you — so open every email and respond on time.
Receive the binding determination
The SDR issues a written determination within 30 business days of the last information exchange. The determination is binding on both parties and not appealable through the federal system (narrow exceptions exist for arbitration fraud or bias). If you win, you owe only the GFE amount (or less). The $25 fee is refunded. If the provider wins, the bill stands but you still have a right to negotiate or pursue state-law remedies.
What to include in your PPDR submission
The SDR reviews a limited record. What you submit is what gets considered — there is no in-person hearing. A strong submission includes:
- A one-page position statement stating the GFE amount, the billed amount, the overage, and why the excess charges are not supported by the estimate.
- The signed Good Faith Estimate (or, if you never received one, a written statement noting that fact — the provider’s failure to provide a GFE is itself a violation).
- The itemized final bill with CPT and HCPCS codes visible.
- Any pre-service paperwork you signed (consent forms, financial responsibility forms) — these sometimes contradict the GFE.
- A copy of the disclosure notice the provider was required to post. If they failed to, note it.
- Evidence of typical charges for the same service (Medicare reference rates, local fair-price databases) to support that the overage is not justified by standard market pricing.
- A clear, dated timeline of communications with the provider’s billing office.
Common mistakes to avoid
Missing the 120-day window
The clock starts the day you receive the bill — not the day you received the service. Late filings are dismissed and cannot be revived. If you are close to day 120, file a placeholder submission and supplement later.
Filing PPDR when IDR is the right channel
If your insurance processed the claim, the dispute is between insurer and provider through IDR — not you. Filing PPDR in an IDR-eligible case will be rejected. Check your EOB: if there is one, IDR applies; if you were self-pay, PPDR applies.
Paying before filing
You can file a PPDR even after partial payment, but collection activity pauses once the SDR is notified. Holding off on payment until the determination preserves leverage. Never miss a payment on a bill you’ve already agreed to — those can be sent to collections separately.
Submitting without the GFE
Without the Good Faith Estimate, the SDR has no benchmark to compare the bill against. If you never received a GFE, your position statement should say so clearly — the provider’s failure is itself a violation and the SDR can rule on that basis.
What to do if the SDR rules against you
An SDR determination is binding under federal law, but it is not the end of your options:
- Negotiate directly with the provider. Many providers offer charity care under §501(r) if you qualify based on income. Ask about hardship discounts, interest-free payment plans, or a one-time pay-in-full discount (often 20–40% off).
- File a state-level complaint. Many states have their own surprise-billing laws that overlap with the federal NSA. Your state insurance department or attorney general consumer protection office may take the case.
- Contact the No Surprises Help Desk. 1-800-985-3059 for complaints about providers that failed to give a GFE, failed to post disclosures, or violated the balance-billing ban. CMS can impose civil monetary penalties.
- Consult an attorney if the dollar amount is large. State-law unfair billing or deceptive-practices claims can sometimes succeed where federal PPDR did not.
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Start my dispute — free to analyzeInformational only — not legal advice. Individual outcomes depend on the specific facts of each case.
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This guide is informational and does not constitute legal, medical, or financial advice. Federal rules change; consult the current CMS guidance and, where appropriate, a licensed professional for your specific situation. Lysco is not a law firm and does not represent you in regulatory proceedings.