Medicare Prescription Drug plans cover essentially all of the prescription drugs in the most commonly prescribed categories. These six areas with nearly all drugs accounted for include anticancer, anticonvulsant, antidepressant, antipsychotic, antiretroviral, and immunosuppressant drugs.
Prescription drug programs are allowed to make changes to the drugs they cover during the year. If any of the changes they make affects a drug you are currently taking, they will give you at least 30 days of advance notice before the change goes into effect or provide you with a month’s supply of prescription at the previous rate.
If you are prescribed a drug that is not covered by your plan and cannot be adequately substituted by a drug that is covered by your plan, you and your prescriber can request an exception. The same can be done if you are prescribed a drug at a quantity higher than the limit covered by your prescription drug program.