The solution
Surprise medical bills came from a market failure: patients could receive unavoidable out-of-network care at an in-network facility or in an emergency, then face a charge they never had a real chance to shop around.
The No Surprises Act, enacted on December 27, 2020 and effective for plan years beginning January 1, 2022, capped the patient's role in many of those bills. Cost sharing is generally limited as if the care had been in network.
The price fight did not disappear; it moved. After an initial payment or denial, the insurer and provider enter open negotiation. If that fails, either side can start federal Independent Dispute Resolution.
The clever mechanism is final-offer arbitration. The provider and insurer submit proposed payment amounts, and the certified IDR entity picks one. CMS reports that from April 15, 2022 through July 31, 2026, 7,048,593 disputes were initiated and 5,144,736 closed by payment determination.
What it achieved
Move the dispute behind the bill
Why it worked
Final-offer arbitration pressures both sides to submit defensible numbers instead of anchoring wildly.
The patient is removed from the leverage point before the professional parties negotiate.
A qualifying payment amount gives arbitrators a market-rate reference without setting every price administratively.
Public IDR reports expose volume, backlog and closure reasons, making the new market visible.
What can be applied
When two sophisticated parties can bargain but the customer cannot, protect the customer first and make the sellers arbitrate the residual price.
Aftermath
The IDR system attracted far more volume than expected and triggered litigation over how much weight arbitrators should give the qualifying payment amount. CMS continued publishing public use files and bi-monthly reports as the process scaled.
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