What Medicare Part D covers?
Medicare Part D is also referred to as Prescription Drug Coverage. These plans are provided by private insurance companies as alternative to coverage managed by the Federal Government. The plans while offered by private insurance companies are contracted by the Federal Government and have guidelines the must follow.
Drug plans will break prescriptions into different tiers, typically they are broken down into 5 tiers.
Tier 1: Preferred Generics
Tier 2: Non-preferred Generics
Tier 3: Preferred Brand
Tier 4: Non-preferred Brand
Tier 5: Specialty
Some drug plans may have less tiers or more tiers, but all drug plans will cover certain categories of drugs including: anticancer drugs, antidepressants, antipsychotics, immunodepressions, HIV/AIDS drugs, seizure drugs, and Vaccines.
Every drug plan must have drugs in their formulary that fall into the categories, but do not have to provide coverage to all drugs available in that category. With coverage being provided, drugs may also have usage or quantity restrictions, along with prior authorization requirements and step therapy.
Who Qualifies for Medicare Part D
Anyone that has Medicare Part A and/or Part B qualifies to get a Medicare Part D, Prescription Drug Plan. You must keep either Part A or B active or both active to maintain a drug plan.
How Much does Medicare Part D cost
Prescription Drug Plan costs will vary depending on the plan you have, drugs you take and even the pharmacy you use. Many drug plans come with a monthly premium, in some areas this can be as low as $0 month in 2026.
Prescription Drug Plans can be broken down into a 3 phases of coverage:
Deductible Phase: The first phase is your annual deductible, in 2026 the highest this can be is $615.
Initial Coverage Phase: The second phase is called ‘initial coverage phase’ this is where you pay a copay or a coinsurance amount for your drugs, this phase is active until you and your plan have paid $2,100 towards drug costs.
Max out of Pocket: The final phase is your Max out of pocket, in 2026 it is $2,100. Once this has been reached, you pay $0 the rest of the year on medications.
Medicare Prescription Payment Plan: If you would like to pay a set monthly price for all of your medications, you can set up the M3P, this allows you to pay a set monthly price based on the max out of pocket remaining and the months remaining. Example: You start M3P in January, you would pay $175 month to your insurance company to pick up all your medications every month at no additional price, equaling $2,100 spread throughout all 12 months opposed to paying a larger lump sum at one time.
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