CMS Moves to Cut Medicare Advantage Prior Auth Delays

If you've ever waited days — or weeks — to find out whether your Medicare Advantage plan would approve a surgery, a specialist visit, or a stint in a rehabilitation facility, you already understand why prior authorization has become one of the most complained-about features of Medicare Advantage coverage. The Centers for Medicare & Medicaid Services is now pushing forward a significant effort to reform how these approvals work, with new requirements aimed at cutting unnecessary delays, increasing transparency, and holding plans accountable when they slow down medically necessary care.

Prior authorization is the process by which Medicare Advantage plans require your doctor to get permission before you receive certain services. Unlike Original Medicare — Parts A and B — which generally pays for any covered service your doctor orders, Medicare Advantage plans are run by private insurers who can require pre-approval for everything from MRI scans to post-surgical home health visits to inpatient rehabilitation stays. According to data from the HHS Office of Inspector General, Medicare Advantage plans denied about 2 million prior authorization requests in a single year, and a significant portion of those denials were later overturned on appeal — suggesting the initial denials were not always clinically justified.

The CMS streamlining effort builds on a rule that took effect in 2024 requiring Medicare Advantage plans to make prior authorization decisions within 72 hours for urgent requests and within seven calendar days for standard (non-urgent) requests. The new push goes further by targeting the clinical criteria plans use to make those decisions. CMS is pressing plans to ensure their internal coverage criteria are based on current evidence and align with what Original Medicare covers — meaning a plan generally cannot deny a service that Medicare itself would cover, simply because the plan's internal guidelines are more restrictive. This is a meaningful shift. In the past, some plans used proprietary clinical criteria that were more stringent than CMS guidelines, effectively creating a coverage gap that beneficiaries didn't discover until they needed care.

One of the most practically useful changes coming out of this effort is a new transparency requirement. Medicare Advantage plans are now required to report prior authorization data — including how often they approve or deny requests by service category — in a format that CMS can make publicly available. Starting with plan year 2026 data, beneficiaries and their families will have a clearer picture of which plans are more likely to approve care for things like skilled nursing facility stays, durable medical equipment, or outpatient procedures. This matters enormously during the Annual Enrollment Period, which runs October 15 through December 7 each year. When you're comparing plans on Medicare Plan Finder at medicare.gov, prior authorization frequency and denial rates will increasingly be part of the picture — not just premiums and star ratings.

For beneficiaries currently enrolled in a Medicare Advantage plan, the most important thing to understand is that you already have appeal rights when a prior authorization is denied — and those rights are stronger than many people realize. If your plan denies a prior authorization request, you can request a redetermination from the plan within 60 days. If the plan upholds the denial, you can escalate to a Qualified Independent Contractor, then to the Office of Medicare Hearings and Appeals, and ultimately to federal court if the dollar amount is high enough. For urgent situations, you can request an expedited appeal, and the plan must respond within 72 hours. CMS data consistently shows that beneficiaries who appeal denials win a significant share of those cases — which means the denial is not the final word.

The CMS effort also targets what's known as "gold carding" — a practice where plans exempt physicians with strong track records of appropriate ordering from having to seek prior authorization for certain services. Some states have already passed laws requiring insurers to implement gold carding programs, and CMS is encouraging Medicare Advantage plans to adopt similar approaches. If your doctor has a long history of ordering a particular type of imaging or procedure appropriately, they may eventually be able to skip the prior authorization step for those services entirely. This could significantly reduce the administrative back-and-forth that delays your care.

It's worth understanding how prior authorization burdens fall unevenly across plan types. Not all Medicare Advantage plans use prior authorization at the same rate or for the same services. HMO-style Medicare Advantage plans, which require you to use a network of providers and typically require referrals to see specialists, tend to have more extensive prior authorization requirements than PPO-style plans, which offer more flexibility. In 2025, the average Medicare Advantage enrollee is in a plan with a $0 monthly premium, but those low-premium plans often come with more utilization management — including prior authorization — built in. A plan with a modest monthly premium of $40 to $80 may have fewer prior authorization requirements, which could be worth the trade-off if you have complex health needs or take specialty medications.

If you're considering switching plans during the 2026 Annual Enrollment Period (October 15 – December 7, 2025) or during the Medicare Advantage Open Enrollment Period (January 1 – March 31 each year), it's worth calling any plan you're considering and asking directly: which services require prior authorization, and what is the plan's average turnaround time for standard approvals? You can also ask your doctor's office — they deal with these plans daily and often know which ones create the most friction. The Medicare Plan Finder tool at medicare.gov allows you to compare plans side by side on cost and coverage, and CMS's star ratings system (1 to 5 stars) includes measures related to how well plans manage care and handle appeals.

For beneficiaries who are frustrated with prior authorization delays right now, there are immediate steps worth taking. First, ask your doctor to submit a peer-to-peer review request — this allows your physician to speak directly with the plan's medical reviewer, and studies show this significantly increases approval rates. Second, make sure your doctor's office has submitted all supporting clinical documentation with the initial request; incomplete submissions are a leading cause of delays and denials. Third, if your condition is urgent, explicitly request expedited review in writing — plans are legally required to respond within 72 hours to expedited requests. And if you believe a denial is wrong, file that appeal. The process exists precisely because Congress and CMS recognized that plans sometimes get it wrong.