IDR eligibility, deadlines, and fees.

Which claims are eligible for IDR.

Federal IDR covers out of network claims protected by the No Surprises Act. In broad terms, that means emergency services, out of network care delivered at an in network facility, and air ambulance services, where the patient is enrolled in a group or individual plan subject to the Act.

A claim is eligible when the No Surprises Act applies, the open negotiation period has run, and no state arbitration law governs the dispute instead. If a state process applies, that pathway controls, and the federal process does not.

The most common reasons a claim is ruled ineligible.

Eligibility challenges are routine. In 2024, the non initiating party challenged eligibility in 44 percent of disputes, according to analysis of CMS data. A claim that looks eligible to a billing team can still be knocked out on a technicality.

Resolving eligibility before you draft a submission saves the time you would otherwise spend on a claim that never reaches a determination.

• →The claim falls under Medicare, Medicaid, or another program the No Surprises Act does not cover.
• →A state arbitration or mediation law governs the dispute instead of the federal process.
• →The open negotiation step was skipped or the notice was sent outside the 30 business day window.
• →The dispute was initiated after the four business day window following open negotiation.
• →The service does not fall within the protected categories under the Act.

The deadline sequence, in business days.

Federal IDR runs on business day deadlines, and missing one can end a dispute regardless of its merits. The sequence below reflects the timing set under the federal regulations.

• →Open negotiation notice: sent within 30 business days of the initial payment or denial.
• →Open negotiation period: 30 business days from the date the notice is sent.
• →Initiate IDR: within four business days after the open negotiation period ends.
• →Select the IDRE: the parties have three business days to agree, or CMS assigns one.
• →Submit offers and evidence: within 10 business days of IDRE selection.
• →Determination: the IDRE generally issues its decision within 30 business days of selection.
• →Payment: the plan generally pays within 30 calendar days of the determination.

What happens if you miss an IDR deadline.

A missed deadline usually forfeits the step, and the dispute can be dismissed. There is no general grace period built into the federal process, which is why high volume practices benefit from a tracked workflow rather than a spreadsheet and memory.

If you missed the window to initiate on a specific claim, the revenue on that claim is generally lost to the process. The practical fix is forward looking: catch eligible claims at the explanation of benefits stage and start the clock deliberately.

What IDR costs: the fee structure.

Two fees, and they are commonly confused. The **administrative fee** is paid by both parties and is non refundable: $15 per party, per dispute, cut from $115 by the CMS final rule of May 28, 2026, effective June 11, 2026. The **certified IDRE fee** is separate, falls within a CMS approved range, and is effectively borne by the losing party. Confirm both before filing, because CMS updates fee guidance.

Batching and the one claim per service question.

As of the May 28, 2026 CMS final rule, federal rules allow batching of certain similar items and services into one dispute, which can lower the per claim administrative cost. It is tempting to batch aggressively to save on fees.

The tradeoff is at the determination. A batched submission produces one offer for the whole batch, so codes can win or lose together. Filing one claim per service keeps each offer tied to comparable prior determinations for that exact code.

Sydra defaults to one claim per code for this reason, and batching is available when your team chooses it for a specific submission. If a case involves several codes, each becomes its own submission by default, and each takes under five minutes to prepare.