The federal Independent Dispute Resolution (IDR) process doesn't always work the way the statute and regulations suggest it should.
Submit four claims in a single batch, with the same CPT code, from the same provider, positioned the exact same way, and it's entirely possible for the certified IDR entity (IDRE) to rule two in your favor, two for the payor, with no rationale given for the tie.
We were surprised when we first encountered this, and we had questions. First of all, why? And who pays the IDRE fee? We never got a clear answer on the first one, but for the fee, we learned you split it with the payor.
That's the spirit behind this post. With input from across the Pivotal Health team, who live in the federal IDR process daily, we've compiled the not-so-obvious dos and don'ts we wish someone had handed us on day one. They're useful whether you've filed five disputes or five thousand.
The dos
Do verify eligibility and routing before you file
Before a claim goes anywhere near arbitration, you need to identify the health plan type, confirm patient coverage and service type, check that you're within every applicable timeline, and, this is the one that trips people up, determine whether the dispute belongs in the federal or a state process.
That last part isn't easy. A claim can appear clearly eligible for IDR, and you still can't tell which IDR. Payors often don't provide the information you need to make federal-versus-state calls. You're left looking at a commercial claim that's out-of-network, processed and paid at the Qualifying Payment Amount (QPA). It looks and smells eligible in every way, with no reliable signal about where to route it.
And sometimes a claim that appears eligible isn't eligible for either process. Through a third-party administrator (TPA), a health plan may end up paying an out-of-network provider through an existing contractual arrangement, at an in-network rate. That means the claim was technically in-network all along, and it’s not something you can usually see from the claim itself.
The 2026 IDR Operations Final Rule (“Final Rule”) should help. It includes new payor communications that will improve eligibility assessments, but those provisions will take time to implement. In the meantime, eligibility verification can't be taken lightly. It requires triangulating whatever data you have (e.g., claims data, historical payor behavior, third-party sources) to make intelligent eligibility and routing decisions, because historically, the payor usually won't help you make them.
Do front-load your documentation
IDREs lean heavily on additional information requests to verify claim eligibility, and that can add weeks to a dispute. It's in your best interest to anticipate what the IDRE is going to ask for and submit it proactively on the front end of the process. This might include Explanation of Benefits (EOB), health plan funding type, group number, and other supporting documentation.
Getting ahead of these requests matters now more than ever. The Final Rule adds a formal process for IDRE information requests that will give parties five business days to respond through the federal IDR portal. If a party fails to respond and the IDRE can't determine eligibility without the information, it can close the dispute.
Read that again: the other party's silence can put your dispute at risk. Some information requests are sent to both parties, and even a complete response on your end can't supply what only the payor has.
Do batch claims, but follow the rules
Batching can significantly improve the economics of IDR. When multiple eligible claims move through the process together, you can spread fees and administrative work across a larger recovery opportunity, making IDR more viable for lower-dollar claims that might not make sense to pursue individually.
But those economics depend on getting the batch right. Federal rules dictate which claims can be batched, including requirements around service type, provider, health plan, and timing. And payors have gotten more sophisticated about scrutinizing batches and challenging claims they believe don’t belong together. If a challenge succeeds, claims can be deemed ineligible, potentially changing the economics of the dispute.
The Final Rule raises the stakes further. Once its new batching provisions take effect, an improperly batched claim can sink the entire batch rather than ineligible claims simply being removed while the remaining eligible ones proceed.
So take advantage of batching wherever the rules allow it. Just don’t let the pursuit of efficiency come at the expense of compliance.
Do study payor behavior—and adapt to it
Payors behave differently throughout the IDR process, and treating them all the same can mean leaving meaningful dollars on the table.
For example, we've seen certain payors sit out open negotiation, then come in well above the QPA once arbitration begins. To the IDRE, it looks like the payor has closed most of the gap between the two offers, and if the determination goes the payor’s way, the process fees can wipe out much or all of the incremental gain.
Other payors operate like a black box. They don't meaningfully participate during open negotiation, rarely challenge eligibility, and give you nothing to act on. Disputes run their course, sometimes ending with no payment and no explanation.
Understanding these differences can change how you operate. With the first payor, the best move might be adjusting your offer strategy; with the black-box payor, it might mean picking up the phone to start a dialogue. To be clear, not every dispute needs a bespoke process. The goal is to standardize as much as possible to run IDR efficiently at scale, while preserving flexibility where it can influence outcomes.
The don'ts
Don't treat open negotiation as a box to check
Open negotiation is the first real chance to resolve a payment dispute, and the only one that's free. There are no fees, no loser-pays exposure, and no months of administrative process. If the payor is willing to engage during the 30-business-day negotiation period, you can land on a fair rate, get paid faster, and move on.
Start by running the numbers. Take the payor's offer and compare it against what you'd realistically ask for in IDR, after you account for fees and the administrative burden of carrying the claim all the way through. Sometimes an offer that looks light on its face is actually a good outcome once you net everything out.
In our experience, smaller health plans do engage and settle disputes during open negotiation with some regularity. The largest national payors mostly don't play ball. That's a high-level guide; you can get more granular using your organization's historical payor behavior and outcomes.
Don't rely on manual tracking for federal IDR
The federal IDR process is governed by a series of statutory deadlines. Miss just one, and you may lose the opportunity to recover reimbursement on that claim.
The tricky part is that not every deadline is a fixed date you can calculate once and put on a calendar. Cooling-off periods are a good example. A determination triggers a 90-calendar-day cooling-off period for the applicable combination of provider, health plan, and service (soon to be 30 days for batched submissions per the Final Rule). But if another determination involving the same combination comes through during the cooling-off period, the timeline can effectively extend, creating what’s known as a “stacked” cooling-off period.
Point being, at any meaningful volume, it’s a matter of when, not if, something slips through the cracks. That's a big part of why we built Pivotal: automated workflow management that tracks every dispute, date, and required action across the IDR process. But whether you use our platform or not, the lesson is the same: the federal IDR process requires a whole lot more than a spreadsheet and a calendar.
Don't assume today's IDR playbook will work tomorrow
The regulations define the federal IDR process, but they don't capture every operational nuance. Those have to be learned by monitoring outcomes, investigating anomalies, and continuously refining how you work. That's especially true as new provisions of the Final Rule take effect and introduce new edge cases.
So don't laminate this list. Everything above reflects lessons from today's federal process, and some of it will inevitably age (although we'll do our best to keep this up-to-date). No checklist can replace paying close attention to how IDR works in your environment, with your payors, and in your market. That's where the real learning happens.
Have an oddly specific question about the federal IDR process, or run into a one-off that's stumping you? We've probably seen something similar. Reach out anytime; we’re always happy to compare notes.
