I Am Seeing A Neurologist For My Chronic Migraine Problem

I am seeing a neurologist for my chronic migraine problem that I have had on and off for most of my adult life. . (I am now 73 )
I have always been given Fioricet and it works very well for me...a half pill will take away a mild migraine and a full pill or two for a more severe headache.
Anyway, I was just notified yesterday that Fioricet will no longer be covered by Medicare. Is there another migraine medication that would work much the same as the Fioricet?
( I also have a small bottle of Imitrex that my neurologist gave me to use for more severe headaches, but I have not had to take any of them...took them when my headaches first started around 30 years of age...but they were very severe migraines at that time.
Thank you for any help in this matter. I have an appointment with my neurologist in a few weeks, but thought I would ask the doctors online.for any suggestions.