Federal IDR · Guide
The 30 business day open negotiation period explainedA guide for surgical billing teams.
Open negotiation is a required 30 business day period to settle a payment dispute directly with the plan before IDR. It starts when either party sends the open negotiation notice. Most disputes do not settle here, but the period cannot be skipped, and its closing date starts the four business day clock to initiate IDR.
The step you cannot skip.
Open negotiation is the step everyone wants to skip and no one can. Before a claim reaches arbitration, the No Surprises Act requires a 30 business day window to settle directly with the plan.
Why it rarely settles.
In practice, open negotiation rarely produces a fair settlement. Plans know the period is required and often hold their number. The value of the step is not the settlement, it is the gate. You cannot file IDR until open negotiation has run.
The dates that decide the window.
What matters operationally is the dates. The period starts when the open negotiation notice goes out, and it closes 30 business days later. That closing date is the one that starts the four business day window to initiate IDR. Get the closing date wrong and you either file early and get bounced or file late and lose the claim.
Tracking it without guessing.
Sydra logs the notice date, keeps the exchanges in one place, and counts the business days so the closing date and the IDR window are never a guess.
Common questions.
Do most claims settle in open negotiation?
No. Plans rarely move to a fair number during open negotiation, which is exactly why the IDR option matters. Treat the period as a required gate, not a real chance to settle.
What should I document?
The notice date, every exchange, and the closing date. The closing date is what starts the four business day IDR window, so it must be exact.
This page is general information about the No Surprises Act dispute process, not legal advice. Eligibility depends on the specific plan, claim, and current federal and state rules. Confirm details for your claim before filing.
Sourced references
- 1. CMS Federal IDR Q1/Q2 2025 Public Use FileReleased January 21, 2026cms.gov/nosurprises/policies-and-resources/reports
- 2. Georgetown University CHIR · Health Affairs webinarMarch 2026 — 3.4 million disputes through June 2025; 88% win rate; median award ~4.5x in network rate
- 3. Zelis — NSA IDR Eligibility ChallengesMarch 2026 — 44% of 2024 IDR cases challenged as ineligible by non initiating party
- 4. ACEP analysis of CMS data~10% of eligible claims estimated to reach IDR arbitration
- 5. Brookings Institution NSA Arbitration DatabookApril 2026brookings.edu/articles/no-surprises-act-arbitration-databook
- 6. ACR — Providers Prevail in Vast Majority of IDR ClaimsJanuary 2026 — 88% of disputes found in provider's favor; 87% of awards exceeded QPA
- 7. No Surprises Act: Public Law 116-260, Division BB, Title I
- 8. Federal IDR regulations: 45 CFR Part 149ecfr.gov/current/title-45/subtitle-A/subchapter-F/part-149
- 9. CMS No Surprises Act overviewcms.gov/nosurprises
- 10. HHS HIPAA for professionalshhs.gov/hipaa/for-professionals
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