it's open enrollment at Medicare (Oct 15 - Dec 7). I was just told by my state volunteer organization that decisions about what to cover on Medicare Advantage plans (at least as far as drugs/Part D go, not sure about tests and procedures) are made by the carriers; there is no central Medicare authority which tells what is and isn't covered. So if you are getting "not covered for CFS" denials (I have heard complaints about this), consider changing plans. There are carriers that do cover, for example, famciclovir for CFS. (I'm saying CFS because that's what the provider has to code and bill it under.) Some of the Medicare Advantage plans are relatively low cost. They reduce the patient share of costs. Some even remove the "doughnut hole", but those have a higher monthly rate. You can use the tools at medicare.gov or look at your state insurance commissioner's page for a volunteer organization which will provide you with information.