What Is Durable Medical Equipment (DME)?
Durable Medical Equipment, Defined
Durable medical equipment (DME) is medical equipment prescribed by a doctor for repeated use in the home — items like wheelchairs, walkers, hospital beds, and oxygen concentrators. It's distinct from disposable supplies or single-use equipment, which is why insurers and Medicare apply a specific test before agreeing to cover it.
The Five-Part Test Medicare Uses to Decide What Counts as DME
Medicare's published criteria require equipment to be durable, medically necessary, primarily useful only to someone who is sick or injured, appropriate for home use, and expected to last at least three years. All five conditions have to be met — four out of five isn't enough for an item to qualify.
- Durable — built to withstand repeated use, not disposable
- Medical purpose — serves a specific medical reason
- Not generally useful without illness or injury
- Appropriate for use in the home
- Expected to last at least three years
That three-year lifespan requirement trips people up most often. A piece of equipment can meet every other criterion and still get denied if it's not built to last that long — one reason cheaper, non-medical-grade equipment sometimes doesn't qualify even when a similar-looking item does.
Common Examples of DME
Oxygen concentrators are the most commonly used DME device in the U.S., alongside wheelchairs, walkers, hospital beds, CPAP machines, and nebulizers. Categories tend to cluster around mobility, respiratory support, and home hospital care.
- Mobility & ambulation — wheelchairs, walkers, rollators, canes, crutches
- Hospital & home care — hospital beds, patient lifts, pressure-relief mattresses
- Respiratory equipment — oxygen concentrators, nebulizers
- CPAP & sleep therapy — CPAP machines and supplies
DME vs. Medical Supplies: What's the Difference
Medical supplies are consumable — bandages, syringes, test strips — while DME is reusable by definition. Some items blur the line: a shower chair looks like DME, but most insurers, including Medicare, don't actually classify it that way.
FAQ
Does DME always require a prescription?+
Yes — Medicare and most insurers require a written order from a doctor confirming medical necessity before DME is covered.
Is DME always covered by insurance?+
No. Coverage depends on your specific plan, whether the item meets your insurer's definition of DME, and whether documentation requirements are met.
What's the most common type of DME?+
Oxygen concentrators are the most widely used DME device in the U.S., followed closely by mobility equipment like wheelchairs and walkers.