Senate blocks effort to end CMS's AI prior authorization pilot program

A Senate Republican bloc has defeated a bid to repeal CMS's Medicare prior authorization pilot that tests AI-driven review tools. The pilot, which began in 2025, applies to certain hospital outpatient department services and has drawn sharp criticism from provider groups over increased denials and lack of transparency. The failed repeal means the demonstration will continue as scheduled, potentially paving the way for broader adoption of algorithmic prior auth systems in Medicare. This signals that AI-driven utilization management tools will remain a core feature of payer workflows. Monitor CMS-2025-XXXX for any updates to the demonstration's scope or published denial-rate data.