Lymphedema Pump Medicare Coverage: Prior Authorization and Costs

Medicare Part B covers a lymphedema pump as durable medical equipment when your physician documents that a trial of conservative therapy has failed and the clinical requirements in National Coverage Determination 280.6 are met.¹ As of April 2026, most pump types also require prior authorization before the supplier can deliver the device.² You pay the Part B deductible and 20% coinsurance on each monthly rental.

Medicare calls these devices pneumatic compression devices. They apply intermittent pressure through inflatable sleeves to push accumulated fluid back into circulation, and they qualify as durable medical equipment because they withstand repeated use, serve a medical purpose, and are appropriate for home use.³

The Conservative Therapy Trial You Have to Complete First

Before Medicare will cover any pump, your physician must direct a trial of conservative therapy, and that trial has to fail. This is the single requirement that most denied claims turn on, usually because of thin documentation rather than true ineligibility.

The trial has three components, and all three must appear in your records: an appropriate compression bandage system or compression garment, regular exercise, and elevation of the affected limb.¹ If one component is missing from the record, a reviewer can call the trial inadequate.

Minimum length depends on your diagnosis:

Lymphedema: at least four weeks of conservative therapy with no significant improvement, or significant symptoms remaining after the trial.
Chronic venous insufficiency with venous stasis ulcers: at least six months of conservative therapy, during which the ulcers must have failed to heal.¹

“No significant improvement” has to be measurable. Objective data, like limb circumference recorded before and after the trial, is what reviewers look for. A general note that the patient reports no change will not carry the file.

What Your Physician Has to Document

Coverage also requires an in-person evaluation. The face-to-face encounter must occur within six months before the written order date, and it can be conducted by a physician, nurse practitioner, physician assistant, or clinical nurse specialist; telehealth counts when it follows CMS telehealth guidelines.⁴ If a non-physician practitioner conducts the visit, a physician must co-sign the relevant part of the medical record.⁵

The written order has to be completed before the device is delivered. It must identify you by name or Medicare Beneficiary Identifier, describe the specific pump ordered, name the treating practitioner, set out the treatment plan (pressure settings, frequency, and duration of sessions), and carry the practitioner’s signature and date.⁴

A Certificate of Medical Necessity (form CMS-846) must accompany the claim as well. This is a separate form specific to pneumatic compression devices.⁶

Behind the order and CMN, your medical records themselves need to establish four things:¹

A confirmed lymphedema or CVI diagnosis with details about the expected course.
Symptoms and objective findings, with measurable data like limb circumference, tissue changes, or wound measurements.
A detailed account of the failed conservative therapy trial: what was done, for how long, and why it did not work.
Clinical response to an initial device trial with the pump itself, including before-and-after measurements, whether you tolerated the treatment, and whether you or a caregiver can operate the device at home.

That last point catches people off guard. Medicare wants evidence not just that conservative therapy failed, but that the pump actually helps you before it commits to long-term coverage.

Prior Authorization Starting April 2026

CMS expanded its prior authorization program nationwide in April 2026 to include pneumatic compression devices billed under codes E0651 and E0652.² Your DME supplier has to submit documentation and receive Medicare’s approval before delivering the pump. Delivery without that approval will usually result in a denied claim.

The medical criteria have not changed. The conservative therapy trial, the physician documentation, and the CMN all still apply. What has changed is timing: review happens up front rather than after delivery. You wait longer to get the device, but you have more certainty the claim will pay. Incomplete submissions are the fastest way to add weeks of delay, so push your supplier to send a complete package the first time.

Which Pump Medicare Will Approve

Medicare recognizes three types of pneumatic compression device, each with its own billing code:

E0650, a non-segmental home model with a single compression chamber.
E0651, a segmental home model without calibrated gradient pressure (multiple chambers that compress in sequence, no individual chamber controls).
E0652, a segmental home model with calibrated gradient pressure, where pressure in each chamber can be set independently.

The E0652 is covered only when your condition genuinely requires it. The standard is narrow: you must have characteristics that prevent satisfactory treatment using a simpler device with a segmented sleeve, or using a segmented device without individual chamber control.¹ An E0652 ordered without documentation of why the simpler devices will not work tends to come back denied.

What You Will Pay

Under Part B, you first pay the annual deductible, which is $283 in 2026.⁷ After the deductible, you pay 20% of the Medicare-approved amount.³

Pneumatic compression devices fall under Medicare’s capped rental rules. Medicare pays a monthly rental fee for up to 13 consecutive months rather than buying the pump outright at the start. Your 20% coinsurance applies to each monthly payment. After the 13th rental month, the supplier must transfer ownership of the device to you at no additional cost.⁸

A Medigap policy alongside Original Medicare can bring your share down. Plans A through G, M, and N all pay 100% of Part B coinsurance; Plan K pays 50% and Plan L pays 75%. With a Medigap plan that covers the coinsurance and your Part B deductible already met, your out-of-pocket on the pump can be zero.

You buy through a DME supplier enrolled in Medicare, not from Medicare directly. Confirm the supplier is enrolled and accepts assignment, which commits them to charging only the Medicare-approved amount plus your share.³ The supplier submits the claim, with supporting medical records, the physician’s order, and the CMN, to the DME Medicare Administrative Contractor.⁹

If you’re in a Medicare Advantage plan rather than Original Medicare, your plan must cover what Original Medicare covers but can impose its own prior authorization and in-network supplier rules; call the plan before you order.

If Medicare Denies the Claim

Read the denial letter first. It names the specific reason, and the common ones are fixable: incomplete conservative therapy documentation, missing objective measurements, or no explanation of why a simpler device will not work. Fixing the underlying problem before you appeal is faster than fighting the denial as issued.

Original Medicare uses a five-level appeals process. You have 120 days from the date you receive the denial notice to request a Level 1 redetermination from the Medicare Administrative Contractor that processed the claim.¹⁰ If that upholds the denial, you have 180 days to request Level 2 reconsideration by a Qualified Independent Contractor, and further levels run through an Administrative Law Judge hearing, Medicare Appeals Council review, and federal district court.¹¹

Most overturned DME denials are resolved at Level 1 or 2, usually because the beneficiary or physician supplies documentation that was missing from the original claim. If your denial was about missing records rather than a true eligibility problem, gathering that documentation and submitting it with a redetermination request is the most efficient path.

1
Centers for Medicare & Medicaid Services. National Coverage Determination 280.6 – Pneumatic Compression Devices
2
Noridian Healthcare Solutions. Pneumatic Compression Devices (PCD) to Prior Authorization Coming Soon
3
Medicare.gov. Durable Medical Equipment Coverage
4
Centers for Medicare & Medicaid Services. DMEPOS Order and Face-to-Face Encounter Requirements
5
Centers for Medicare & Medicaid Services. Detailed Written Orders and Face-to-Face Encounters
6
Centers for Medicare & Medicaid Services. CMS-846 – Pneumatic Compression Devices
7
Centers for Medicare & Medicaid Services. 2026 Medicare Parts A and B Premiums and Deductibles
8
eCFR. 42 CFR 414.229 – Capped Rental Items
9
Centers for Medicare & Medicaid Services. Durable Medical Equipment, Prosthetic Devices, Prosthetics, Orthotics, and Supplies
10
Centers for Medicare & Medicaid Services. First Level of Appeal: Redetermination by a Medicare Contractor
11
Centers for Medicare & Medicaid Services. Medicare Parts A and B Appeals Process