I have no idea about the coverage on your device but I do know that Medicare does not pay for repair or replacement parts on my durable medical equipment ie rollator or wheelchair. I could buy (and did) a new rollator for less than replacing the worn wheels. Yeh I had to buy it, well my brother did, as Medicare would not pay for the model I needed in spite of a letter from my pain doc.......a physiatrist. They have a one size fits all approach relative to mobility devices. Best wishes.