Resource
Federal IDR Open Negotiation
Understand the required negotiation period that generally precedes a Federal IDR initiation.
The baseline
The federal process uses a 30-business-day open-negotiation period. Under the current operating process, parties should follow the CMS notices and forms in effect for their negotiation start date.
Build a reliable record
Retain the remittance or denial, negotiation notice, proof of transmission, payer contact information, offer history, and calculation of the end date.
Watch phased 2026 changes
The 2026 operations final rule changes notice and response mechanics, but many provisions apply only after supporting Gateway functionality and announced transition dates.