Federal IDR · Case Study
Anatomy of a Dispute: The Default Disaster
In 2025, providers and facilities filed more than 2.2 million federal IDR disputes. Of the 5.7 million dispute line items in the public data, 1,313,995 were decided by default. That is 22.9 percent. Nearly one in four.
Nearly one in four line items was not decided on the clinical facts, the contract language, or the strength of the evidence. It was decided because one side did not participate and the arbitrator ruled by default.
1,313,995 of 5,728,139 dispute line items in the 2025 CMS Federal IDR Public Use Files carried a default decision. (Author analysis of CMS PUF 2025 Q1-Q4.)
What a default looks like
The IDR process runs on deadlines. Eligibility windows. Offer submissions. Evidence packets. Each step has a clock, and the clock does not negotiate. A representative default follows the same shape every time.
A dispute is filed. Notices go out. One side, usually buried under hundreds of parallel filings, misses a deadline or submits an incomplete packet. The IDR entity does not weigh the merits. It enters a default decision. Revenue that was winnable on the facts is lost to the calendar.
Nobody involved is incompetent. The volume is simply inhuman. When a single organization files tens of thousands of disputes a year, each with its own deadlines, document requirements, and arbitrator, manual tracking breaks. It does not break dramatically. It breaks quietly, one missed deadline at a time, until nearly a quarter of all line items are decided by absence.
What the winners do differently
The organizations that win consistently treat the dispute process as an operations problem before it is a legal problem. Every deadline is tracked. Every evidence packet is assembled the same way, every time. Every submission is verified complete before it goes out. This is not brilliance. It is systematization, and roughly 90 percent of it is automatable: deadline calendars, document checklists, completeness verification, submission tracking.
The consultancies dominating this space understood that early. They present as advisors and experts, which they are. But underneath the consultancy is a machine that never misses a deadline.
The takeaway
You cannot win a dispute you do not show up for. Before arguing about the QPA or the clinical evidence, fix the process that gets you into the room. A sealed, source-traced evidence record for every dispute, assembled the same way every time, with a human reviewer signing off before submission. That is the floor. Nearly a quarter of the market is losing below it.
Sources
- Paragon Health Institute analysis of CMS Federal IDR public use files: Fixing the No Surprises Act
- Georgetown Center on Health Insurance Reforms, via Fierce Healthcare: costs tied to the No Surprises Act IDR process
- Health Affairs Forefront, early look at 2025 IDR data: No Surprises Act IDR process
- Becker's Payer Issues, H1 2025 determinations: providers won 88%
- Becker's Payer Issues, dispute volume growth: volume grows, costs pass $22B
- Radiology Business, specialty determination shares: radiology fires back
- CMS Federal IDR reports and public use files: independent dispute resolution reports
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Get Your Free Scorecard1,313,995 of 5.7 million federal IDR line items in 2025 were decided by default. Nearly one in four disputes was lost to the calendar, not the merits.
This post is educational, not legal advice. Run IDR strategy past your own counsel before you rely on it.
