The Patient-Provider Dispute Resolution Process

When an uninsured or self-pay patient receives a final bill that is substantially higher than the good-faith estimate they were given, the No Surprises Act provides a federal mechanism to challenge it. The Patient-Provider Dispute Resolution (PPDR) process is a structured negotiation and arbitration system that can result in a binding determination setting a fair payment amount. This page explains how it works, how to use it, and what to expect.

For the full picture of the No Surprises Act’s protections, including good-faith estimate requirements, visit the No Surprises Act guide.

The $400 threshold: when PPDR applies

The right to initiate PPDR is triggered when your final bill exceeds the good-faith estimate by more than $400. This is a threshold applied to the total bill versus the total estimate, not to any single line item.

A few clarifying points on how the threshold works:

• If your estimate was $1,200 and your bill is $1,650, the $450 difference crosses the threshold.
• If your estimate was $1,200 and your bill is $1,580, the $380 difference does not cross the threshold even though it is a meaningful overcharge.
• If the bill includes charges for services that were not on the estimate because they were medically necessary and unforeseeable — a complication, for example — those additional charges are compared as part of the overall total.

When the overage is below $400, your options are to negotiate directly with the provider’s billing department, request an itemized bill and dispute specific line items, or accept the bill. PPDR is not available below the threshold.

How to initiate a dispute: step by step

1. Receive the itemized bill from the provider. Compare it line by line to your good-faith estimate. Identify every service on the bill that was not on the estimate and every service whose price is higher than estimated.
2. Contact the provider first. Before initiating PPDR, ask the billing department to explain any discrepancy. Some overages are billing errors — a duplicate charge, an incorrect code, or a service that was not delivered — that can be corrected without a formal dispute.
3. Gather your documentation. You will need your good-faith estimate, the final itemized bill, your contact information, and documentation of any prior communication with the provider about the overcharge.
4. Initiate PPDR through the CMS portal. The Patient-Provider Dispute Resolution process is administered through a CMS-designated PPDR entity, accessed via cms.gov/nosurprises. Pay the $25 initiation fee.
5. Enter the 30-business-day open negotiation period. During this window, you and the provider communicate through the PPDR entity and may settle on an agreed amount. If you reach agreement, the case closes.
6. Proceed to IDR if negotiation fails. If no agreement is reached in 30 business days, either party can request that the dispute advance to a certified IDR entity for a binding determination.
7. Receive the determination. The IDR entity issues a binding decision. If the determination is lower than the billed amount, the provider refunds your $25 initiation fee.

What happens during open negotiation

The 30-business-day open negotiation period is the first phase of PPDR. It is not adversarial — the goal is to allow both parties to exchange information and potentially settle without an arbitrator.

During this period, the provider may offer a reduced amount, explain additional services that were medically necessary, or ask for documentation from your side. You can accept a settlement offer or counter it. All communication occurs through the PPDR entity, creating a documented record.

If you settle during open negotiation, the agreed amount is what you owe. There is no IDR determination, and the process ends with a written agreement.

If you do not settle within 30 business days, either party can move the dispute to the IDR phase. The $25 initiation fee remains with the PPDR entity.

How the IDR entity decides

A certified IDR entity — a neutral organization approved by the federal government — reviews:

• The good-faith estimate you were provided
• The final bill and supporting documentation from the provider
• Any explanation for why the bill differed from the estimate
• Any information you provide about the care received and whether it matched the estimate

The arbitrator selects a payment amount that reflects a fair and reasonable charge for the services. Unlike the insurer-provider IDR process (which involves a “baseball arbitration” pick-one model between two submitted offers), the PPDR process gives the arbitrator more flexibility to set a payment amount within a reasonable range.

The IDR entity’s decision is binding on both parties. If the determination is lower than what the provider billed, the provider must adjust the bill to that amount and reimburse your $25 initiation fee.

Documents and terms you’ll see

During the PPDR process, you will encounter these terms on CMS forms, provider correspondence, and dispute notices:

• Good-faith estimate — the written pre-service itemized estimate the provider was required to give you; it is the baseline against which your final bill is compared
• Patient-Provider Dispute Resolution (PPDR) — the federal process for uninsured and self-pay patients to contest bills that exceed the estimate by more than $400; initiated through a CMS-designated entity
• Independent dispute resolution — the third-party neutral arbitration phase that applies if open negotiation does not result in agreement; the IDR entity issues a binding payment determination
• Self-pay — the category of payment that makes you eligible for PPDR; you must have been billed as an uninsured or self-pay patient at the time of service

Timelines and deadlines to watch

Step	Deadline
Initiate PPDR	Within 120 days of receiving the final bill
Open negotiation period	30 business days from initiation
Request IDR after failed negotiation	Within a set window after negotiation closes (specified in CMS guidance)
IDR entity determination	Typically within 30 business days of IDR selection

Missing the 120-day window to initiate PPDR forfeits your right to use the federal process for that bill. If you believe you are approaching the deadline and have not yet resolved the dispute with the provider, initiate PPDR to preserve your rights even if you continue negotiating separately.

Protections while the dispute is pending

While a PPDR dispute is open:

• The provider cannot send the disputed amount to a third-party debt collector.
• The disputed amount cannot be reported to credit bureaus.
• The provider cannot charge interest on the disputed portion.
• You owe only the undisputed amount — typically the good-faith estimate amount — while the case proceeds.

These protections give you the ability to dispute without fear that the bill will damage your credit or escalate to collections during the process. If a provider violates these rules while a PPDR case is active, document it and report the violation to CMS.