If you have met the "catastrophic coverage" phase, you will have no further responsibility towards drugs covered in your plan's formulary. However, if you are on medications not covered by your Part D prescription drug plan, you will still be responsible to pay those costs.
Based on the 2025 changes, once an individual hits the out-of-pocket max they pay nothing for the rest of the calendar year. The out-of-pocket max is $2000 for 2025. Once you hit $2000 you enter the "catastrophic phase" and pay nothing more than $2000 for covered medications.
Once you hit the out-of-pocket maximum you no longer pay anything for your covered prescriptions. The OOPMax is now $2000. The interesting thing is that it could be less than that as some of the discounts between the insurance company and the pharmaceutical company are counted into that $2000.
Just to be clear your prescriptions still have to be listed in the formulary (the list of drugs covered) by the Part D plan. It isn't that your doctor can write a prescription for whatever and it be covered at 100%.
All in all this new OOPMax is a very good thing for consumers.
Once any of us on Medicare with a Part D prescription drug plan (PDP) pay out of our pocket $2,000 in any calendar year you are done and all medications thereafter this limit are covered at 100%. This limit includes the $590 calendar year deductible when you have to pay it.
Every Part D Prescription Drug Plan, whether its a stand alone plan, or attached to a Medicare Advantage Plan has a list of Formulary Drugs....the prescription drugs they're willing to cover on your plan. You enter the Catastrophic Coverage phase once you've reached the $2000 limit, a formula between what YOU'VE paid on prescriptions and the cost of those prescriptions from the drug company. All your FORMULARY drugs are covered at no charge for the rest of the calendar year.
In the catastrophic coverage phase of Medicare Part D, you pay $0 for covered prescription drugs for the rest of the year after you've reached the out-of-pocket maximum. This maximum is $2,000 in 2025. Once you've reached this limit, the plan covers 100% of the cost of your covered drugs.
Here's a more detailed breakdown:
Out-of-Pocket Maximum:
You reach this point after accumulating $2,000 in out-of-pocket costs for covered drugs.
No Additional Costs:
After hitting the maximum, you don't pay any copays, coinsurance, or deductibles for covered drugs for the rest of the calendar year.
Coverage Simplification:
This phase eliminates the coverage gap (also known as the "donut hole"), which used to exist before 2025.
Ongoing Premium:
You still need to pay your monthly Part D premium, but you won't have any further out-of-pocket costs for covered drugs.
In 2025, once your out-of-pocket prescription drug costs reach $2,000, you enter the catastrophic coverage phase of Medicare Part D. At this point, you won't have to pay anything for covered Part D drugs for the rest of the year
For year 2025 Part D has had a great change. In previous years when you entered into the Catastrophic Stage of your Drug Plan, you would have a copay that was determined by if it was a generic or name brand drug. You would pay the higher of the defined copay or 5% of the cost of the drug. For 2025 you no longer have a copay in the catastrophic stage, meaning that you will have a maximum of $2,000 drug cost for the year. Some may pay less than that depending on how CMS calculates and credits the copays that you paid.