Congress is weighing changes to how hospitals, insurers, and patients resolve surprise medical billing disputes—a core piece of the 2020 No Surprises Act. Federal regulators have already cut dispute-filing fees and opened up batching rules in response to catastrophic system overload, but lawmakers are now considering stronger enforcement measures to penalize insurers that ignore arbitration outcomes and to fundamentally limit the types of disputes eligible for resolution. The Independent Dispute Resolution (IDR) process—the mechanism patients and providers use when they disagree on what a procedure should cost—has generated 5.1 million disputes as of January 31, 2026, vastly exceeding the original federal estimate of just 22,000 annual disputes. That collapse is driving Congressional action on both sides, with enforcement-focused bills and industry roundtables now underway.
Table of Contents
- What the No Surprises Act Does
- The System Exploded Beyond Expectations
- Federal Regulators' Emergency Fixes (Effective June 2026)
- What Congress Is Now Considering
- What Happens Next, and What You Should Know
- Frequently Asked Questions
What the No Surprises Act Does
The No Surprises Act, passed in 2020, protects patients from "surprise" medical bills—charges that arrive when an out-of-network provider treats you at an in-network hospital, or when you use an in-network doctor who refers you to an out-of-network specialist without your knowledge. When insurers and providers disagree on what an out-of-network service is worth, they can request IDR: a private arbitrator reviews both sides' arguments and issues a binding payment decision.
The law was meant to keep disputes off patient bills entirely. But the process itself has become a flashpoint between insurers trying to control costs and healthcare providers claiming the disputes prevent them from being paid fairly.
The System Exploded Beyond Expectations
The original federal estimate assumed IDR would handle 22,000 disputes per year. Instead, 1.75 million disputes were filed in the first half of 2026 alone—a 50% year-over-year increase. The spike reflects both legitimate billing disagreements and frivolous claims filed for leverage.
The financial toll is substantial. Healthcare providers received nearly $15 billion in arbitration awards in 2025 alone—more than triple 2024 awards—and the overall IDR process has contributed to $22.4 billion in additional medical costs over four years. That cost burden typically flows back to patients through higher premiums. Quality control has also broken down: nearly 40% of disputes submitted in 2024 and the first half of 2025 were flagged as ineligible, yet many still advanced to full arbitration anyway.
Federal Regulators' Emergency Fixes (Effective June 2026)
Rather than wait for Congress, federal agencies moved independently. On May 28, 2026, regulators finalized major rule changes to the IDR process, reducing the per-party administrative fee from $115 to $15 and allowing disputes to batch up to 50 items and services per filing. The fee reduction became effective June 11, 2026.
The fee cut is designed to discourage frivolous filings. Batching allows insurers and providers to combine multiple related disputes into a single arbitration, cutting administrative overhead and speeding resolution. CMS is also launching the IDR Gateway, a centralized digital platform in phases beginning 2026, to allow disputes to be filed, tracked, and managed in one location. These changes reduce the cost and friction of disputes but do not prevent insurers from ignoring arbitrators' decisions or limit which disputes qualify for arbitration in the first place.
What Congress Is Now Considering
The regulatory fixes appear insufficient to industry groups and lawmakers. House Republicans on Ways and Means and Rep. Frank Pallone Jr. (D-NJ) are separately pursuing reforms targeting arbitration costs and firm conduct, while Senate Health, Education, Labor and Pensions Chair Bill Cassidy (R-LA) announced plans for a members roundtable to discuss legislative fixes. The most specific proposal is H.R.
4710, the bipartisan No Surprises Act Enforcement Act, introduced July 23, 2025, which would authorize federal regulators to penalize insurers and group health plans that fail to comply with payment timelines following IDR determinations. When an arbitrator says an insurer owes a provider money, the insurer must pay on time—or face penalties. Broader proposals under discussion include tightening eligibility rules to prevent ineligible disputes from reaching arbitration and potentially capping the growth of IDR awards by year or by provider.
What Happens Next, and What You Should Know
The regulatory changes are already in effect, so dispute-filing fees are now lower and batching is available. However, Congress is still weighing enforcement penalties and structural limits, and the timeline for new legislation is uncertain. If you receive a surprise bill and choose to file an IDR dispute, expect the process to move faster and cost less as a filer than it did before June 2026.
But the IDR outcome is binding only on the insurer and provider—it does not override a claim denial based on medical necessity or policy terms. If an insurer denies your claim as medically unnecessary, IDR will not override that decision; you would need to pursue a separate appeal process through your plan. The cost inflation driven by IDR is already reflected in higher premiums. Congressional action to tighten eligibility and enforce compliance would likely slow that trend, but it is not yet law.
Frequently Asked Questions
Does IDR protect me from paying surprise bills?
No. IDR only determines how much the insurer pays the provider. If the insurer's claim denial stands on other grounds (medical necessity, policy exclusions), IDR cannot override it. You would still owe the provider unless your insurer covers the claim.
When are the new fee and batching rules in effect?
The $15 fee and batching provisions became effective June 11, 2026. The IDR Gateway will launch in phases starting in 2026 but is not yet fully operational.
What happens if Congress passes H.R. 4710?
Regulators would gain explicit authority to penalize insurers and group health plans that ignore arbitration outcomes or miss payment deadlines. This would enforce the law's original intent—that arbitration decisions be final and timely.