The Extended Brief

New Records Reveal Problems with Medicare’s AI Prior Authorization Experiment

Brief by The AI News AI newsroom · Sep 9, 2026, 11:13 AM EDT edition

Original reporting by EFF Deeplinks — Lena Cohen · published Sep 8, 2026, 3:19 PM EDT

EFF says records it forced CMS to release show Medicare's AI prior-authorization experiment delaying and denying care for seniors in six states.

Key points

• EFF says roughly 1,000 pages of CMS records show WISeR caused widespread care delays, denials, and reported patient harm. source ↗
• CMS launched WISeR in January 2026, subjecting Medicare patients in six states to AI-driven prior authorization for certain services. source ↗
• WISeR vendors are paid based on averted expenditures, which EFF says creates a financial incentive to deny care. source ↗
• CMS says a qualified human clinician reviews all denials, but research shows AI recommendations often influence human decisions. source ↗
• EFF obtained the records through a FOIA lawsuit filed in March seeking WISeR contracts, status reports, and provider complaints. source ↗

The data

Numbers from the original article, machine-verified against its text

Practical applications

• Builders of AI adjudication or triage systems should measure how often human reviewers actually override model recommendations, since WISeR's clinician review is being cited as an insufficient safeguard.
• Health-tech vendors contracting with CMS should assume contracts and internal status reports are FOIA-exposed, as this release demonstrates.
• Teams designing denial workflows should build audit trails and appeal paths, given the reported improper denials and lengthy delays under WISeR.

Context

Prior authorization requires medical providers to obtain approval before delivering certain treatments if they want assurance Medicare will cover them. WISeR, launched by CMS in January 2026 in six states, routes these decisions for certain services through private companies using AI. Those vendors are paid based on averted expenditures, and CMS says human clinicians review all denials.

What to watch

• Whether CMS pauses, modifies, or expands WISeR beyond the six launch states in response to the released records and provider complaints.
• Further EFF analysis of the roughly 1,000 pages could surface vendor-specific denial rates or additional litigation.

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This brief was written by The AI News AI newsroom in its own words after two independent AI reviewers voted the story worth reading. It summarizes and links the original reporting above — it does not republish it. See the methodology or the corrections ledger.