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Sydra - NSA IDR Software

THE CLOCK IS ALREADY RUNNING

You have 4 business days to file.Not 4 weeks.

A payer's out of network payment is an opening offer, not the amount owed. Federal IDR is how you contest it, and it runs on two clocks that never move.

The open negotiation period runs 30 business days. Once it closes, you have exactly 4 business days to initiate. Miss that window and the claim is closed for that cycle. Permanently. No extension, no appeal path.

This is the part of the process that should never depend on anyone's judgment, because the deadline does not depend on anyone's judgment either.

See what one denied claim is worth

Built on Claude via Amazon Bedrock · Built to support HIPAA safeguards · BAA on request · ModMed and Stedi integrations · SOC 2 aligned, report under NDA · Security details

Clinician in scrubs working through claim paperwork under a desk lamp after hours

The two windows

The two windows that matter.

Federal IDR lives on two clocks. First, a 30 business day open negotiation period must run. Second, once that period closes, you have exactly 4 business days to initiate IDR for the claim.

Miss either window and the claim is closed for that cycle. These are federal rules, not soft targets, and they do not extend for volume, staffing, or holidays inside a business day count.

See CMS No Surprises Act guidance for the federal rules behind both clocks.

Window 1

30 business days

Open negotiation

Required attempt to settle with the plan before IDR can begin. The period cannot be skipped.

Window 2

4 business days

IDR initiation

Once open negotiation closes, this is the only window left to file. Miss it and that cycle is over.

Miss either window and the claim is closed for that cycle.

Why the deadline is the part to get right first.

Everything else in federal IDR is recoverable. A weak market rate justification can be strengthened next time. A missed deadline cannot be anything next time. The claim is simply gone, and it is gone for administrative reasons rather than because the plan was right about the money.

That is why deadline tracking is the first thing Sydra does with a claim, before anything is drafted against it.

What changed in 2026 that makes this more urgent.

The CMS final rule of May 28, 2026, effective June 11, 2026, cut the administrative fee from $115 to $15 per party, per dispute. The clocks did not change. What changed is how many of your claims are now worth filing, which means more claims moving through the same two windows, and more opportunities to miss one.

If you think you might already be close to the window.

Bring the claim to a free 15-minute call. Sydra runs an eligibility check that includes whether the filing window is still open before any packet is built.

If the window is open, you see what a submission looks like on a real claim from your specialty. If it has already closed, you know that before spending time on documentation that cannot be filed this cycle.

Not sure if your window is still open?

See what one denied claim is worth

Built on Claude via Amazon Bedrock · Built to support HIPAA safeguards · BAA on request · ModMed and Stedi integrations · SOC 2 aligned, report under NDA · Security details

Questions about the filing deadline

How long do I have to initiate IDR after open negotiation ends?
You have 4 business days to initiate federal IDR after the open negotiation period closes. That count is business days, not calendar days, and it does not extend once it starts.
Is the 30 day open negotiation window business days or calendar days?
Business days. The open negotiation period runs 30 business days, and the initiation window that follows is also 4 business days.
What happens if I miss the 4 business day window?
The claim is closed for that cycle. There is no appeal path for a missed initiation deadline. The underpayment cannot be disputed through federal IDR for that same cycle once the window closes.
Can Sydra tell me if a claim is still inside the filing window?
Yes. Sydra runs an eligibility check before building a packet, including whether the initiation window is still open for that claim.
Does the 2026 filing fee change affect the deadline?
No. The fee cut changed the economics of which claims are worth filing. The clocks themselves are unchanged: 30 business days for open negotiation, then 4 business days to initiate.
Sourced references
  1. 1. CMS Federal IDR Q1/Q2 2025 Public Use FileReleased January 21, 2026cms.gov/nosurprises/policies-and-resources/reports
  2. 2. CMS Federal IDR Q4 2025 Public Use FileQuarter 4, 2025. Source for the per CPT area average initial payment and median figures in the Practice A table on the homepage. Geography and median denominator are pending confirmation from ops; see the TODO above PRACTICE_A in src/lib/content/homepage.ts.cms.gov/nosurprises/policies-and-resources/reports
  3. 3. Sydra client records, presented with client permissionProvenance for the Sydra performance figures in SYDRA_PERFORMANCE (src/lib/idr/proof-points.ts): 92% across 113 decided cases, 82.9% across 76 decided cases under the client's prior contingency firm, and the CPT 19318 award of $50,742.00 against a $2,500 QPA. Decided cases only; excludes withdrawn, ineligible, and pending disputes. Not federal data and not a category benchmark.
  4. 4. Georgetown University CHIR · Health Affairs webinarMarch 2026. 3.4 million disputes through June 2025; 88% win rate; median award ~4.5x in network rate
  5. 5. Zelis: NSA IDR Eligibility ChallengesMarch 2026. 44% of 2024 IDR cases challenged as ineligible by non initiating party
  6. 6. ACEP analysis of CMS data~10% of eligible claims estimated to reach IDR arbitration
  7. 7. Brookings Institution NSA Arbitration DatabookApril 2026brookings.edu/articles/no-surprises-act-arbitration-databook
  8. 8. ACR: Providers Prevail in Vast Majority of IDR ClaimsJanuary 2026. 88% of disputes found in provider's favor; 87% of awards exceeded QPA
  9. 9. No Surprises Act: Public Law 116-260, Division BB, Title I
  10. 10. Federal IDR regulations: 45 CFR Part 149ecfr.gov/current/title-45/subtitle-A/subchapter-F/part-149
  11. 11. CMS No Surprises Act overviewcms.gov/nosurprises
  12. 12. HHS HIPAA for professionalshhs.gov/hipaa/for-professionals
  13. 13. CMS Final Rule: No Surprises Act IDR overhaul (HHS, DOL, Treasury, OPM)Administrative fee reduced from $115 to $15. Batching of multiple claims now permitted to lower costs and speed resolution. New IDR Gateway centralized platform rolling out in phases.cms.gov/newsroom/press-releases/federal-rule-takes-aim-saving-taxpayer-dollars-health-care-bureaucracy-reducing-dispute-fees
Clinician and a practice advisor reviewing claim figures on a tablet in a hospital lobby

Book a demo

We'd welcome a short call to see whether this is worth pursuing. Bring one denied out of network claim and you will see what federal IDR would do with it before the call ends.

Set up a demoSee what one denied claim is worth

Or email sales@sydrahealth.com with a question.