Insurers Have Denied Authorized Medical Claims

Medical practices report that prior authorizations are no longer guaranteeing payment for patient services.

Updated on Sept. 30, 2026 in Healthcare

Isometric editorial illustration showing a single manila folder on a plain surface, representing institutional medical billing processes. — Medical providers across the U.S. report that insurers are frequently denying payments for patient services despite valid prior authorization on file. AI Illustration. Upload story photo >

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Do you trust that insurer prior authorization systems are working fairly for patients and providers?

Medical practices across the U.S. report that insurers are denying claims even after prior authorization has been granted. Some medical services have remained unpaid for a year or more despite having valid authorizations on file.

Why it matters

Insurers utilize prior authorization to manage service utilization for Medicare Advantage plans, but current practices have led to widespread payment disputes. Consequently, medical groups are lobbying for federal regulation to address claim denials and downcoding.

The Improving Seniors' Timely Access to Care Act currently has 290 House cosponsors, while CMS is testing a prior authorization model for 17 services. Proposed regulations seek to implement a 90-day limit for insurer downcoding windows.

The players

Medical Group Management Association

This professional organization represents medical practice leaders and advocates for regulatory changes in healthcare administration.

Centers for Medicare and Medicaid Services

This federal agency administers the Medicare program and is currently testing new prior authorization models across multiple states.

The details

Medical providers submit clinical information through electronic health record templates, but insurers frequently rely on third-party portals and fax systems to process requests. This disconnect often leaves practices with significant payment delays that persist long after the initial authorization step.

December 2025: A medical practice attendee relocated from Texas to Colorado.
January 1, 2026: CMS launched a new prior authorization testing model.
June 2026: The Improving Seniors' Timely Access to Care Act reached 290 cosponsors.

Market Landscape

The current environment reflects a structural tension between provider reimbursement and insurer utilization management, exemplified by the legislative trajectory of the Improving Seniors' Timely Access to Care Act. Industry stakeholders are increasingly turning to federal oversight to standardize billing practices.

These administrative failures can lead to significant billing confusion and delayed treatment approvals for patients. Patients may face unexpected costs if their medical providers cannot secure timely payments or accurate coding from insurance companies.

The takeaway

Patients should proactively communicate with their providers about the status of prior authorizations before undergoing scheduled procedures. Staying informed about pending federal reforms can help clarify the evolving rights and protections for those enrolled in Medicare Advantage plans.

What happens next

The Medical Group Management Association plans to introduce legislation prohibiting downcoding in the next Congress and will release further feedback in an upcoming Washington Connection issue.