Prior Authorization For Original Medicare
Starting January 1, 2026, those on Original Medicare who reside in New Jersey, Ohio, Oklahoma, Texas, Arizona, or Washington, will be required to get a prior authorization for Original Medicare before you receive some covered services. This will cause a major shift in how some beneficiaries use their Medicare benefits.
Medicare is launching a pilot program called the WISeR Model; short for Wasteful and Inappropriate Services Reduction and with it comes something traditionally associated with Medicare Advantage plans: prior authorization.
What Is Prior Authorization
Think of prior authorization as an ok from Medicare. Before your doctor can move forward with certain procedures such as; back surgery, an epidural, or a knee replacement, they have to get Medicare’s approval first. If Medicare doesn’t approve the service, the beneficiary will be on the hook for the entire cost.
This step is designed to prevent beneficiaries undergoing unnecessary or risky treatments, but it also means more paperwork, potential delays, and a new layer of bureaucracy for Original Medicare beneficiaries.
Why Is Medicare Doing This
According to CMS, the WISeR model has three main goals:
- Cutting down on fraud and wasteful spending
- Protecting patients from unnecessary or potentially harmful care
- Using technology and expert review teams to promote high-quality, cost-effective treatment
Medicare emphasizes that the goal is not to deny care, but to ensure the care being provided is truly necessary.
Which Services Will Require Prior Authorization
The WISeR pilot affects 17 outpatient services Medicare has identified as potentially overused or subject to misuse. These include:
- Back and neck surgeries
- Knee and joint surgeries
- Epidural injections and other pain treatments
- Skin grafts
- Nerve stimulators
What You Need to Know if You Have a Medigap Plan
Even if you have a Medicare Supplement plan (Medigap) like Plan G or Plan N, this change still affects you:
Watch a quick video on High Deductible Plan G
- Medicare Must Approve First: Medigap only helps pay your portion after Medicare approves the service. If Medicare denies it, Medigap won’t cover anything.
- Longer Wait Times: Prior authorization can delay access to care while your provider waits for Medicare’s decision.
- Less Flexibility: Traditional Medicare has long been valued for its ease of access to services—this new layer limits that freedom for certain procedures.
- No Formal Appeals: Under the WISeR pilot, there’s no standard appeal process. If denied, your doctor can submit more info, but there’s no official right to appeal like there is in broader Medicare.
How Does This Compare to Medicare Advantage
If this sounds familiar, it’s because Medicare Advantage plans have used prior authorization for years. However, there are key differences:
- Traditional Medicare is administered by the federal government, while Medicare Advantage is offered by private insurers.
- The WISeR model only requires PA for 17 specific outpatient services, while Medicare Advantage may require approval for hundreds of services and medications.
What’s Next
Right now, this is a pilot program affecting just six states. But if it’s successful, Medicare could expand it nationwide or add more services to the list.
Even if you don’t live in one of the six pilot states, it’s wise to stay informed—these changes could affect you in the future.
What Medicare Beneficiaries Should Do
- Talk to Your Doctor
Ask if any upcoming procedures might require prior authorization. - Plan Ahead
Build in extra time for possible delays when scheduling certain treatments. - Stay Informed
Keep up with updates from CMS and talk to your Medicare agent, especially if you plan to travel or move to another state.
The WISeR model represents a big change for Traditional Medicare, especially for those who’ve enjoyed its simplicity and flexibility. While the goal is to protect patients and reduce waste, many worry it could delay care or add confusion.
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For now, being proactive is your best defense. Know which services are affected, communicate clearly with your doctor, and keep up with Medicare updates. This pilot could be the first step in a broader transformation of how Original Medicare works.
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