Supervised Exercise Therapy (SET) for Symptomatic Peripheral Artery Disease (PAD) | CMS Coverage Update

Summary: The Centers for Medicare & Medicaid Services modified its coverage policy for Supervised Exercise Therapy (SET) for symptomatic Peripheral Artery Disease (PAD), effective May 15, 2026. Here's what billing teams need to do before that date.

CMS SET coverage for PAD has been on billing teams' radar since the original National Coverage Determination opened the door to reimbursement for structured exercise programs. This 2026 modification updates the criteria, documentation expectations, and program structure requirements your practice must meet to get paid. The policy does not list specific CPT or HCPCS codes in the data provided — but the clinical and administrative requirements are the real story here, and ignoring them will generate claim denials fast.

Quick-Reference Table

CMS Supervised Exercise Therapy Coverage Criteria and Medical Necessity Requirements 2026

CMS SET coverage for PAD has always come with a tight list of conditions. The program exists because clinical evidence shows that structured, supervised exercise reduces claudication symptoms and improves walking distance — outcomes CMS decided warranted a dedicated coverage pathway. But "supervised" is doing a lot of work in that phrase, and the requirements around it are specific.

To meet medical necessity under this coverage policy, the patient must have a diagnosis of symptomatic peripheral artery disease. That means documented intermittent claudication — leg pain, cramping, or fatigue that occurs with activity and resolves with rest. Asymptomatic PAD does not qualify. Neither does critical limb ischemia as a standalone indication without the claudication presentation the policy targets.

The referring physician requirement is a recurring source of claim denials. CMS requires that a physician, physician assistant, or nurse practitioner refer the patient to SET and certify the patient's diagnosis and medical necessity. That referral and certification must be in the medical record before SET begins. If your practice is starting patients in the program and collecting the paperwork later, stop. That workflow will not survive a post-payment audit.

Prior authorization is not universally required under this national policy, but your Medicare Administrative Contractor may impose local requirements. Check with your MAC before May 15, 2026 — particularly if you operate in a region with a history of local coverage determinations around outpatient rehabilitation services. Assuming prior authorization isn't needed because you haven't been asked for it before is the kind of assumption that generates expensive denials.

The program structure requirements are where this policy gets precise. SET must be delivered in a physician's office or a hospital outpatient setting. The sessions must be supervised by qualified auxiliary personnel — which CMS defines specifically. The supervision must be direct: the supervising individual must be in the room, not simply available nearby. Each session is one hour. The program allows up to 36 sessions over 12 weeks, with a possible extension to 72 sessions based on documented medical necessity and physician authorization.

Reimbursement depends entirely on meeting these structural requirements. CMS does not pay for SET delivered in a gym, at home, or in any setting that doesn't meet the physician office or hospital outpatient definition. If your facility has been billing for a hybrid program with any home-based sessions counted toward the total, that's a compliance risk worth reviewing with your compliance officer before the effective date.

CMS SET for PAD Exclusions and Non-Covered Indications

CMS does not cover SET under this policy for patients who lack a symptomatic claudication diagnosis. That exclusion is firm.

Patients with critical limb ischemia who are not also experiencing intermittent claudication fall outside this coverage policy. Similarly, patients who have already undergone lower extremity revascularization may face coverage restrictions — the policy was designed for patients who are candidates for exercise therapy as a treatment, not as post-surgical rehabilitation. If your patient mix includes post-revascularization cases, verify coverage separately for each patient before starting a SET program.

SET delivered outside an approved care setting is not covered, regardless of clinical appropriateness. And SET supervised by personnel who don't meet CMS qualification standards is not covered. These are not gray areas. Document your supervising personnel's credentials and keep them current in your records.

Coverage Indications at a Glance

CMS Supervised Exercise Therapy Billing Guidelines and Action Items 2026

The May 15, 2026 effective date gives your billing team a defined deadline. Here's what to do before it arrives.

CPT, HCPCS, and ICD-10 Codes for Supervised Exercise Therapy Under This Policy

This policy modification does not include specific CPT, HCPCS, or ICD-10 codes in the data provided to PayerPolicy. Do not assume the codes haven't changed — the absence of code data here means you need to verify current coding directly.

For supervised exercise therapy billing under Medicare, the applicable codes have historically been published in conjunction with CMS program guidance. Your coding team should pull the current Medicare Claims Processing Manual guidance for SET and confirm which codes your MAC recognizes for this service category.

If you are uncertain which codes apply to your program after May 15, 2026, consult your billing consultant or coding compliance officer before submitting claims. Billing with outdated or incorrect codes under a modified coverage policy is a fast path to both denials and potential overpayment liability.