Medicare Part B covers Tysabri as in infusion; however, then you must pay the 20% copay and this can be very costly. The Medicare code for Natlizumab/Tysabri is Q4079.
If you have a supplemental plan that covers major medical, it will be covered 100%.
If you have a supplemental plan that covers major medical, it will be covered 100%.
Also, Medicare Part D covers Tysabri 100%.