Hi Bill. Good Question. Medicare does cover the costs of a cochlear implant, assuming a person is qualified medically to receive one. There are variables among the Medicare programs that may determine whether or not a co-pay is involved. I was still working when I had my implant. My insurer covered all but $1500 of the surgery and external equipment. On Medicare, I've had to pay about that amount to upgrade processors. (Worth it!) I know other people on Medicare who have been covered 100%. When I have consulted with my Medicare representative when changing Advantage Plans, I got the 'deer in the headlights look' as they don't know what a CI is. You have to go deeper. My CI is from Cochlear Corporation. They will help you figure this out once you qualify for the surgery. I believe the other CI manufacturers will do the same. While I cannot give you the complete answer you are looking for, if you qualify for a cochlear implant, Medicare will cover most of the expenses, but you may have to go the extra mile and fight for it. Medicare will also cover most of the costs of processor upgrades every five years. I hope others will share their experiences on this as they seem to vary.