Your original Medicare billing rules changed on January 1, 2026. If your practice is in Arizona, New Jersey, Ohio, Oklahoma, Texas, or Washington, this affects you now. The CMS WISeR pilot requires prior authorization for 17 outpatient procedure categories. Claims without PA are being denied.
This is not Medicare Advantage. This is original Medicare. Many practices have not caught up yet.
What WISeR Requires
CMS launched the WISeR pilot under the Consolidated Appropriations Act. It adds prior authorization to original Medicare fee-for-service claims. It covers 17 procedure categories across 6 states. It went live January 1, 2026.
If a patient has original Medicare and you bill a covered code without Prior Auth(PA), the claim is denied. There is no grace period. Retroactive authorization is not guaranteed.
The 17 Procedure Categories
Cross-check these against your active CPT and HCPCS codes now:
- Facet joint interventions
- Implanted spinal neurostimulators
- Lumbar epidural injections
- Vertebral augmentation
- Knee arthroplasty
- Hip arthroplasty
- Shoulder arthroplasty
- Arthroscopic knee surgery
- Cardiac catheterization
- Colonoscopy and endoscopy
- Rhinoplasty and septoplasty
- Blepharoplasty
- Panniculectomy and abdominoplasty
- Botulinum toxin injections
- Implanted peripheral neurostimulators
- Cervical fusion
- Standalone rhinoplasty
Each category maps to specific codes in the CMS WISeR code list. Pull that list. Compare it to your procedure mix. Do this before your next billing cycle.
Where Claims Break
Most Prior-Auth workflows were built for Medicare Advantage. Original Medicare did not need PA for outpatient surgery – until now. If your team still routes original Medicare claims straight to billing, you are skipping the PA check entirely.
Here is what that looks like in practice. A patient with original Medicare is scheduled. Staff skip PA because they assume original Medicare does not need it. The procedure happens. The claim is filed. The denial comes back weeks later.
At that point, you cannot go back and get authorization before the procedure. Your billing and RCM operations team is now working on a denial that should never have happened. If this is repeating across your ortho or spine schedule, the cash flow impact adds up fast.
What to Fix Right Now
The things you can fix right now:
Check your last 90 days of original Medicare claims. Find any in the 17 WISeR categories. See if PA was obtained. Identify what is still within your timely filing window.
Add a PA check to your scheduling workflow. The trigger must happen when the appointment is booked, not when the claim is built.
Brief your front desk and billing teams together. Both need to know which codes require PA for original Medicare patients. One team knowing and the other not is enough for the gap to persist.
Link PA documentation to the claim record. If authorization is stored in a separate file, it may not be attached at submission. That causes denial even when PA exists. Good revenue cycle management stops this scheduling. Catching it at denial rework costs you time and payment.
Why Scale Makes This Worse
One missed PA is a billing problem. Ten missed PAs per week is a cash flow problem. The gap grows with volume.
If your revenue cycle management software does not apply PA logic to original Medicare claims, your team fills that gap manually. That means someone has to know every WISeR code, check it on every original Medicare case, and flag it before billing. At scale, that process breaks down.
Practices running high ortho, spine, or pain volume in the 6 WISeR states face this most. The more procedures you perform, the more cases fall through a manual check system. The fix has to live in the workflow, not in staff memory.
How CERTIFY Pay Handles This
CERTIFY Pay flags PA requirements before a claim is submitted. When a WISeR procedure code is matched to an original Medicare patient in one of the 6 states, the system surfaces the PA requirement at the Prior-Auth stage. Your billing team does not need a CMS WISeR code list manual check. The system checks every original Medicare case before filing.
PA documentation is attached to the claim record at submission. This closes the gap where authorization exists but is not linked at filing. Your patient payment workflows stay clean – denials do not enter the queue.
You can also align your patient intake processes so Pre Auth is triggered at scheduling, not caught downstream. As a healthcare payment solution, CERTIFY Pay embeds the WISeR compliance logic into the workflow so your team acts on it automatically.
This is what revenue cycle management software should do at this level. The rule change lives in the system. Your staff applies it without having to track CMS updates by hand.
Act Before the Next Denial
WISeR is active. The 6 states and 17 categories are set. If your practice is in scope and has not updated your PA workflow, denials are likely building in your queue right now.
Start with the audit. Then check whether your revenue cycle management software applies original Medicare PA logic at the claim level, or whether your team is catching it manually. That answer tells you how much risk you are carrying.
Audit your PA workflows for WISeR-covered codes. Talk to our team about how CERTIFY Pay flags PA requirements before claiming submission.
