# The Federal IDR Timeline: Every Deadline That Can Kill Your Claim
I have spent 20 years in surgical billing, and the No Surprises Act is the most provider favorable process I have ever worked in. Providers win 88 percent of federal IDR disputes. The catch is that the process is built on a chain of deadlines, and a claim that misses any link in the chain is dead permanently. No appeal, no extension, no exception worth planning around.
Here is the full timeline, the way my team tracks it on every claim.
Day zero: the insurer pays or denies
The clock starts when the insurer issues its initial payment or notice of denial on an out of network claim. Not when you notice the underpayment. Not when the EOB gets worked in your queue. The date on the payment.
Window one: 30 business days to initiate open negotiation
From that initial payment date, you have 30 business days to send the insurer a notice initiating open negotiation. This is the window that kills most claims, because it punishes inaction. A practice that does nothing for six weeks has not delayed its recovery. It has forfeited it.
Open negotiation is not optional. You cannot skip ahead to arbitration. Skipping this step is one of the most common reasons disputes get ruled ineligible, and ineligibility findings run at roughly 1 in 5 of all national filings.
Window two: 30 business days of negotiation
Once initiated, open negotiation runs 30 business days. Either side can settle at any point, and you can keep negotiating all the way until a final determination is issued. Most insurers do not move during this window, which is fine. The window exists to protect your right to the next step.
Window three: 4 business days to initiate IDR
If negotiation ends without agreement, either party has 4 business days to initiate federal IDR through the portal. Four. This is the trap window. A practice that diligently ran its negotiation and then took a week to assemble the filing has lost the claim at the finish line.
Selection and determination
After initiation, the parties have 3 business days to mutually select a certified IDR entity. If they cannot agree, the Departments assign one. Both sides then submit their payment offers with supporting evidence, the arbitrator picks one number, baseball style, and the determination is binding. The losing party must pay within 30 calendar days.
What this means for a surgical practice
Add it up and a properly run dispute moves from EOB to binding award in roughly three to four months. The work is not hard. It is relentless. Every claim carries its own chain of dates, and a practice filing ten disputes a month is tracking dozens of live windows at once. That is why claims die in good billing departments run by good people: not from ignorance, from arithmetic.
This is the job my team does all day. We track every window on every claim from EOB intake through determination follow up, and we target under 5 business days from receiving your EOB to a filed submission.
If you have out of network claims sitting unworked right now, some of them are inside window one with the clock running. Send us 3 to 5 recent EOBs and we will tell you what each one is worth and exactly how much time it has left. The review is free and takes one business day.