Continuous Passive Motion (CPM) machines
Medicare Part B (Medical Insurance) covers knee CPM machines
Coverage details
If you meet certain conditions, Medicare covers knee CPM machines as durable medical equipment (DME). For example, if you have knee replacement surgery, Medicare covers CPM devices for up to 21 days of use in your home.
Medicare covers different kinds of DME in different ways. Depending on the type of equipment:
- You may need to rent the equipment.
- You may need to buy the equipment.
- You may be able to choose whether to rent or buy the equipment.
- Some items become your property after you’ve made a certain number of rental payments.
Who's eligible
Part B covers medically necessary DME if your provider prescribes it for use in your home.
Provider requirements
Make sure your doctors and DME suppliers are enrolled in Medicare. It’s also important to ask a supplier if they participate in Medicare or will accept assignment of your claims before you get DME.
Costs
After you meet the Part B deductible , you pay 20% of the Medicare-approved amount (if your supplier accepts assignment).
If suppliers are participating in Medicare, they must accept assignment (which means they can charge you only the coinsurance and Part B deductible for the Medicare approved amount). A non-participating provider doesn't have to accept assignment of your claims, but may choose to do so in your case. If DME suppliers aren't participating suppliers or won't accept assignment of your claims, you may be charged more. For rented DME, make sure the supplier is willing to accept assignment of your claims for all rental months. If the claim isn't assigned, you must pay for the full cost upfront. If this happens, Medicare will pay you later for the amount it covers after your claims have been processed.