Understanding CMS WISeR
What the Wasteful and Inappropriate Service Reduction Model means for wound care and specialty clinics — and how to stay ready.
A quiet change with a loud impact on revenue
For the first time, a CMS model uses AI-assisted review to decide — before you're paid — whether specific Medicare services were appropriate. For clinics that bill the affected procedures, it changes day-to-day operations starting in 2026.
It's live now
The model began January 1, 2026 and runs through 2031.
It gates payment
Affected claims must clear review before they're paid.
It's about documentation
Approval hinges on what your records can prove.
States, six years, and a growing list of services now under AI-assisted prior authorization. Understanding it early is the difference between adapting and scrambling.
What WISeR Is
WISeR, in plain language
A CMS Innovation Center demonstration model that uses enhanced technology — including AI and machine learning — alongside licensed human clinical review to confirm that selected Medicare Part B services are appropriate before payment is made.
In short: a pre-payment check on a short list of services, designed to catch care that isn't supported by the coverage rules.
Why CMS built WISeR
Target low-value care
CMS points to services with well-documented rates of overuse or limited clinical benefit, and wants to reduce spending that doesn't help patients.
Combine AI with clinicians
The model pairs machine-assisted screening with licensed clinical reviewers, so speed and scale come with human judgment.
Test before scaling
As an Innovation Center model, it's a time-boxed experiment in six states — a way to measure impact before any national policy decision.
WISeR at a glance
Timeline
January 1, 2026 through December 31, 2031 — a six-year model.
Geography
Six states: New Jersey, Ohio, Oklahoma, Texas, Arizona, and Washington.
Applies to
Original (traditional) Medicare, Part B — not Medicare Advantage.
Sites of care
Office, hospital outpatient, ambulatory surgery, and home settings.
Who reviews
Six CMS-selected technology companies, with licensed clinicians.
The mechanism
Prior authorization or pre-payment review on selected services.
Where it runs, and for how long
The six states
Model begins
First exemption notifications
Performance years
Model ends
What WISeR does NOT do
It does not change what Medicare covers
Coverage criteria — the NCDs and LCDs — stay exactly the same. WISeR checks whether a claim meets them, it doesn't rewrite them.
It does not change payment rates
Fee schedules are untouched. The model affects whether and how quickly you're paid, not the amount.
It does not apply to Medicare Advantage
Only Original Medicare fee-for-service is in scope. MA plans run their own separate prior-authorization programs.
It does not remove clinician judgment
Every non-affirmation must be made by a licensed clinician — AI cannot issue a denial on its own.
How WISeR Works
Two pathways — and no true opt-out
For each affected service, a provider chooses one of two routes. Both lead to the same review; they differ in timing.
Submit prior authorization
You send documentation before the service or claim. A decision comes back in days, and an affirmation gives you confidence you'll be paid.
Best for: predictable cash flow.
Skip prior authorization
You proceed without pre-approval — but the claim is then automatically routed to pre-payment medical review, with the same scrutiny after the fact.
Result: the review happens either way.
How a prior-authorization request flows
Assemble
Gather the claim's codes and the clinical documentation supporting medical necessity.
Screen
The participant's technology screens the request against coverage criteria.
Review
If it isn't a clear affirmation, a licensed clinician reviews it.
Decide
You receive a provisional affirmation or a non-affirmation with reasons.
The clinical documentation you assemble in step one determines the outcome in step four. Everything downstream depends on it.
How fast you get an answer
The default turnaround for a routine prior-authorization decision.
When a delay could seriously jeopardize the patient's health.
Affirmed vs. non-affirmed
The service meets coverage criteria.
You have strong assurance the associated claim will be paid. "Provisional" because standard claim edits still apply at billing.
Criteria weren't met — or weren't shown.
Issued only by a licensed clinician, with specific reasons. Often a documentation gap rather than a true coverage problem — which means it's fixable.
What to do after a non-affirmation
Resubmit with more evidence
Address the stated gaps and send an updated request with the documentation that was missing.
Request a peer-to-peer
Discuss the case directly with the reviewing clinician to clarify the clinical picture.
Use standard appeal rights
If you disagree with the determination, the usual Medicare appeal pathways remain available.
Decline to furnish
In some cases the clinically appropriate choice is not to proceed with the service.
Most non-affirmations are resolved by resubmission — which is why getting the documentation right the first time saves the most time.
Who and What Is Affected
What's under review
WISeR applies to a defined list of services chosen for documented overuse or limited benefit. CMS can add to this list over the life of the model.
Skin & tissue substitutes
Cellular and tissue-based products (CTPs) for chronic wounds — high-cost and closely reviewed.
Electrical nerve stimulator implants
Implanted devices held to strict, publicly posted coverage criteria.
Knee arthroscopy for osteoarthritis
An elective procedure with well-documented variation in appropriateness.
Skin & tissue substitutes, up close
For wound and podiatry clinics, CTPs are where WISeR bites hardest — high dollar value, rapid billing growth, and detailed coverage criteria that documentation must satisfy line by line.
Get these right and CTP claims sail through. Miss one and the claim stalls.
What reviewers expect to see
- A qualifying wound diagnosis and ulcer type
- A documented trial of standard/conservative care
- Serial wound measurements showing non-healing
- Correct product, HCPCS code, and units applied
- A clear statement of medical necessity — for this patient
Sites of service — and who feels it most
Settings in scope
Podiatry & limb preservation
CTPs, debridement, and DFU care sit squarely on the list.
Wound care centers & HOPDs
High CTP volume means high review exposure.
Home health & visiting nurses
Wound services delivered in the home are in scope too.
The six CMS-selected participants
Announced November 6, 2025, these six technology companies conduct the reviews — one assigned per state, each working with licensed clinicians.
Texas
Oklahoma
Arizona
Assigned state
Assigned state
Assigned state
You'll work with whichever participant covers your state. WoundScribe formats submissions for all six — more on that shortly.
What Earns an Affirmation
WISeR is a documentation test
The coverage rules haven't moved. What's changed is when you must prove you meet them — and generic notes no longer clear the bar.
Pay, then maybe audit
Claims were generally paid, with review happening later — if at all. Documentation was a back-stop you hoped you'd never need.
Prove, then get paid
Medical necessity must be demonstrated up front, before payment. Documentation moves from back-stop to front-line — it is the product you submit.
The two pillars of an affirmation
Pillar 1 — The right codes
Accurate, defensible CPT and HCPCS codes that match the service delivered — with the correct product and units for CTPs. Coding errors alone can sink an otherwise valid claim.
Pillar 2 — Patient-specific rationale
Clinical documentation that maps to the governing NCD or LCD and is unique to this patient — the diagnosis, the prior treatments, the measurements, the response to care. This is where most claims are won or lost.
Why templated notes get rejected
Reviewers explicitly flag copy-paste, one-size-fits-all documentation. If a note could describe any patient, it doesn't prove medical necessity for this one.
"Chronic non-healing wound. Conservative care failed. Skin substitute medically necessary."
Could describe anyone. Proves nothing.
"DFU, R plantar, 3.2×2.1 cm, present 9 wks. 4 wks offloading + weekly debridement; <30% closure. Vascular adequate (ABI 0.9)."
Specific, measurable, tied to criteria.
The Gold Card
Gold-carding: the goal to aim for
Prior authorization — waived.
Hit ~90% affirmation
Reach roughly a 90% provisional-affirmation rate across your reviewed requests.
Build a track record
Exemption requires a minimum volume — at least 10 prior-authorization requests.
Reviewed quarterly
Exemption notifications begin June 2026 and are issued on a rolling, quarterly basis.
Preparing Your Clinic
Six steps to get ready
Identify your exposure
List the WISeR services you bill and the volume for each — that's your risk surface.
Map each to its criteria
Pull the governing NCD/LCD for every affected service and know what it requires.
Standardize documentation
Turn those criteria into a consistent, patient-specific capture standard for every clinician.
Build PA into scheduling
Make prior authorization a routine intake step, not a scramble at billing.
Train the whole team
Clinicians, coders, and front-desk staff should all understand the new flow.
Track your affirmation rate
Measure it, watch the trend, and drive toward the 90% gold-card threshold.
How WoundScribe supports WISeR readiness
Much of that checklist is exactly what documentation AI is built to carry — turning WISeR readiness from a manual project into an automatic byproduct of good charting.
Cross-checks at the point of care
As procedures and codes are suggested, they're validated against WISeR criteria and the governing NCD/LCD — before submission.
Builds patient-specific rationale
Structured, image-anchored capture produces the measurements and specifics reviewers require — never templated.
Formats for all six participants
Submissions are packaged for whichever CMS-selected reviewer covers your state.
Tracks you toward the Gold Card
Your affirmation rate is measured and trended, so the 90% exemption threshold stays in view.
Five things to remember
- WISeR is a pre-payment review of select services in six states, 2026–2031.
- It doesn't change coverage — it changes when you must prove it.
- Affirmation depends on the right codes plus patient-specific rationale.
- Templated documentation is the most common reason good care is denied.
- A ~90% affirmation rate earns a Gold Card exemption — aim for it.
Get a WISeR readiness assessment for your clinic
See where your documentation stands today — and how WoundScribe carries the checklist for you, from point-of-care capture to Gold Card tracking.
Book a demo