Not Covered

Medicare Denied Medical Equipment (DME) Claim

Name: Medicare Denied Medical Equipment (DME) Claim
Creator: Barley Billing Team
Published: 2026-03-26

Written by Barley Billing Team, Medicare Billing Experts | Last reviewed March 26, 2026

Does your notice say something like this?

"The information provided does not support the need for this equipment"

"This equipment is not covered by Medicare"

"The supplier is not approved to bill Medicare for this item"

If so, you're in the right place. Here's what it means and what to do.

What This Means

Medicare denied payment for durable medical equipment (DME) that was ordered for you. DME includes items like wheelchairs, hospital beds, walkers, CPAP machines, oxygen equipment, and diabetic supplies.

Medicare has strict documentation and supplier requirements for DME. A denial usually means one of these requirements wasn’t met — not necessarily that you don’t need the equipment.

Why This Happens

Missing certificate of medical necessity (CMN). For certain equipment categories, your doctor must complete a CMN form documenting your medical need. If this form wasn’t submitted with the claim, it will be denied.
No face-to-face encounter on file. For items like CPAP machines and power wheelchairs, your doctor must have seen you in person within 6 months before ordering the equipment. If this visit isn’t documented, the claim will be denied.
The supplier isn’t enrolled in Medicare. Medicare only pays suppliers that are enrolled in the Medicare program and meet accreditation requirements. CMS requires annual accreditation for DMEPOS suppliers.
Competitive bidding rules weren’t followed. In certain geographic areas, Medicare requires that specific DME items come from suppliers who won contracts through the competitive bidding program. If your supplier isn’t a contract supplier for your area, Medicare may deny the claim.
The equipment wasn’t deemed medically necessary. Medicare may have determined that the documentation didn’t support the need for the specific equipment ordered, or that a less costly alternative would meet your needs.
Prior authorization wasn’t obtained. Some DME items require prior authorization before delivery. If your supplier didn’t get advance approval, the claim may be denied.

Should You Appeal?

Appeal outlook: Mixed

DME denials are often caused by documentation gaps that can be fixed. KFF (2024) found that over 80% of appealed Medicare Advantage denials were overturned.

Your appeal is more likely to succeed if:

Your doctor can provide the missing CMN or face-to-face encounter documentation
The equipment is clearly medically necessary for your condition and your doctor can explain why
The denial was based on a coding or paperwork error

Your appeal is less likely to succeed if:

The equipment is not a covered DME item under Medicare
You got the equipment from a supplier that isn’t enrolled in Medicare
A less costly alternative would meet your medical needs

What To Do Next

Read your denial notice carefully. It will explain the specific reason the claim was denied. This tells you exactly what needs to be addressed.
Contact your doctor’s office. If the denial is due to missing documentation (CMN or face-to-face encounter), ask your doctor to provide the required paperwork. Many DME denials are resolved simply by submitting this documentation.
Contact the DME supplier. Ask if they are enrolled in Medicare and, if applicable, whether they are a competitive bidding contract supplier for your area. If they aren’t, ask them to help you find a qualifying supplier.
File an appeal if documentation can support your claim. Include your denial notice, a letter from your doctor explaining medical necessity, the CMN (if required), and relevant medical records. For Original Medicare, send the appeal to the DME Medicare Administrative Contractor listed on your MSN.
Check whether an ABN was provided. If you were not given an Advance Beneficiary Notice (ABN) before receiving the equipment, the supplier may be liable for the cost — not you. Contact 1-800-MEDICARE (1-800-633-4227) if you believe you were improperly billed.

Sources

Want us to review your denial for free? Send us your notice and we'll tell you if it's worth appealing →

Appeal Deadlines — Check Your Notice for Exact Dates

Original Medicare

120 days from the date on your MSN

Medicare Advantage

At least 60 days (check your denial notice for exact deadline)

Not sure which you have? Check the top of your denial notice. If it names a private insurance company (like Humana, UnitedHealthcare, or Aetna), you have Medicare Advantage. If it says "Centers for Medicare & Medicaid Services," you have Original Medicare.

Frequently Asked Questions

What is a certificate of medical necessity?

A certificate of medical necessity (CMN) is a form your doctor fills out to confirm that you need specific medical equipment and to explain why. Medicare requires a CMN for certain types of DME, including hospital beds, oxygen equipment, and power wheelchairs. Without it, the claim will be denied.

What is the face-to-face encounter requirement?

For certain types of DME (like CPAP machines and power mobility devices), your doctor must have seen you in person within 6 months before writing the order. A nurse practitioner, physician assistant, or clinical nurse specialist can also conduct this encounter. If this visit isn't documented, the claim will be denied.

Does the supplier matter?

Yes. Medicare only pays for DME from suppliers enrolled in Medicare. Some items must also come from a supplier that participates in Medicare's competitive bidding program for your area. If you got equipment from a non-enrolled or non-participating supplier, Medicare may not cover it.

What if I already received the equipment?

You can still appeal. If the denial was due to missing documentation (like a CMN or face-to-face encounter record), your doctor can provide the missing paperwork to support your appeal. If you were not given an Advance Beneficiary Notice (ABN) before receiving the equipment, the supplier may not be able to bill you for the denied amount.

Want Us to Check Your Denial?

Send us your denial notice and we'll review it for free. We'll tell you if it's worth appealing and exactly how to do it.

This information is for educational purposes only and is not legal or medical advice. Always verify with your doctor's office and insurance company.