Federal IDR guides
Which claims can go in one IDR dispute?
Four tests decide whether claims can be batched into one federal IDR dispute. What batching saves, the traps, and what changes on November 1, 2026.
Verified September 11, 2026
Short answer
Claims can share one dispute when four things match. Same provider. Same payer. A similar condition. Dates of service inside one 30-business-day window. A batch costs one set of fees instead of one per claim. Each line is still decided on its own.
From November 1, 2026, batches are capped at 50 lines.
Why batch
One filing. One entity fee instead of one per claim. One clock for offers and one for the decision. For a group with hundreds of similar claims, batching is the difference between IDR paying for itself and not.
The IDR entity still decides every line separately. A batch of 40 claims gets 40 decisions.
The four tests
| Test | Passes when |
|---|---|
| Same provider | Same NPI or TIN |
| Same payer | Same insurer for fully insured plans. For self-funded plans, the same employer plan, not the same administrator. |
| Similar condition | The statutory test today. From November 1, 2026 it is one of three set categories: same patient visit, the same billing code across patients, or the same CPT section for anesthesia, radiology, pathology and lab |
| Same window | All dates of service within one 30-business-day period |
All four must pass. Any line that fails goes in a different batch or files alone.
Watch out
The trap that splits batches
The company that runs the plan is not the payer. Two employers that both use the same insurer to run their self-funded plans are two payers. Their claims cannot share a batch, even though the EOBs look the same.
Fully insured plans are the opposite. One insurer's individual and group plans can share a batch.
Watch out
Two other traps
The window runs on dates of service, not billing or EOB dates. The cooling-off exception on the deadlines page applies here too.
Different QPAs do not break a batch. The IDR entity looks at each one.
Batching is not bundling
A bundle is one billing code that covers many services, like a DRG for a hospital stay. It is decided as one item and pays the one-item fee. A batch is many items decided one by one and pays the batch fee.
What is changing
What changes on November 1, 2026
For any dispute whose open negotiation starts on or after November 1:
- Batches are capped at 50 lines.
- The wait before re-filing the same items drops from 90 calendar days to 30 business days.
- "Same patient visit" gets a tighter definition: same or consecutive dates of service, on the same claim form.
Anything with negotiation already under way before November 1 runs on the old rules.
If you get a batch wrong
Today, a bad batch can be filed again the right way. The final rule ends that, but on its own schedule, tied to the IDR registry rather than to November 1. Check the date before you rely on a second attempt. Either way, tag every line with its claim number so the entity can drop one line without sinking the rest.
Air ambulance
Air ambulance claims batch only with each other, and the batch covers one transport, including its base-rate and mileage codes.
Sources
45 CFR 149.510(c)(3); CMS Federal IDR Guidance for Disputing Parties, sections 6.1 and 6.2; CMS FAQs Part 63; CMS notice, "Changes to Batching Disputes," August 3, 2026; Federal IDR Operations Final Rule, May 2026.
Every number on this page comes from public CMS files or the federal rule. Our methodology explains how we count. Questions? sales@recoursehealth.com
Your data, not the national average
See how your group's IDR record compares.
A free report card built from the same CMS files, measured at the group level. Nothing needed from you.