Medicare Part D: Your Prescription Drug Coverage

The prescription drug coverage that helps cover the cost of costly medications without leaning on your pockets.

What is Medicare Part D?

Medicare Part D is a federal prescription drug program managed by private insurance companies. Medicare beneficiaries can either enroll in a standalone Part D plan to enhance their Original Medicare benefits or choose a Medicare Advantage (Part C) plan that includes prescription drug coverage.

Prescription drug coverage is exclusively available through Part D plans or Medicare Advantage Prescription Drug plans (MAPD). Original Medicare (Parts A and B) does not cover medications typically obtained at your local pharmacy. Part D plans require a separate monthly premium and come with their own deductibles, copayments, and coinsurance costs.

Upon enrolling in a Part D plan, you’ll receive a distinct Part D insurance card, which you’ll need to present when refilling your prescriptions.

How does it work?

Medicare Part D plans can be complex due to their multiple coverage phases, each with different costs for your prescriptions. Whether you have a standalone Part D plan or one integrated into your Medicare Advantage plan, your prescription drug coverage works similarly. Here’s a breakdown of the four phases of Medicare Part D coverage:
Each year, the Centers for Medicare and Medicaid Services (CMS) sets a standard deductible for Part D plans, though insurance companies can choose to set a lower amount. You will stay in this phase until your deductible is met. Fortunately, many plans waive the deductible for drugs in the lower tiers of their formulary. A formulary is a list of covered medications, divided into tiers where lower tiers usually mean lower costs. If your prescription falls into the first tier, you may not need to pay the deductible.
After meeting your deductible, you enter the initial coverage phase. During this time, you’ll pay a copay for each prescription based on its tier. The tiers are typically categorized as:
You stay in this phase until you and your plan together spend a certain amount on prescriptions. For 2024, this threshold is set at $5,030.
Once you exceed the initial coverage limit, you enter the donut hole or coverage gap. During this phase, you’ll pay a higher percentage of your prescription costs. In 2024, once you and your plan have spent $5,030 on drugs (including the deductible), you’ll pay no more than 25% of the cost for prescription drugs until your out-of-pocket expenses reach $8,000.
Starting January 1, 2024, once your out-of-pocket spending reaches $8,000 (including certain payments made on your behalf by others or Medicare’s Extra Help program), you’ll automatically receive catastrophic coverage. This phase means you won’t have to pay a copayment or coinsurance for covered Part D drugs for the remainder of the calendar year.
Understanding these phases helps you better plan for your prescription drug costs and make the most of your Medicare Part D coverage.

Why do you need Part D?

Medicare consists of four parts: A, B, C, and D. Parts A and B, known as Original Medicare, cover inpatient and outpatient medical costs, including some intravenous medications. However, they do not cover the prescriptions you typically get at your pharmacy.

Medicare Part C, or Medicare Advantage, includes various plans, some of which cover prescription drugs. These are called Medicare Advantage Prescription Drug plans (MAPD). If your Medicare Advantage plan includes prescription drug coverage, you do not need a separate Part D plan.

For those without an MAPD plan, a standalone Part D plan is essential for covering prescriptions obtained at the pharmacy. The only exception might be if you have prescription benefits through VA Healthcare or TRICARE for Life.

Even if you aren’t currently taking any prescriptions, enrolling in a Part D plan as soon as you are eligible is crucial. This is important for two reasons:

  1. Avoiding the Part D Penalty: If you delay enrollment, you may face a late enrollment penalty, which we’ll discuss next.
  2. Enrollment Windows: You can’t enroll in a Part D plan at any time. If you miss your initial eligibility period, you’ll have to wait until the Annual Election Period (AEP) to enroll, and your coverage won’t start until the following year.

 

Enrolling in a Part D plan ensures you have the coverage you need for prescription medications and avoids penalties and gaps in coverage.

Understanding the penalty

One of the most commonly encountered penalties in Medicare is the Part D penalty. Many people mistakenly believe that if they aren’t currently taking any medications, they don’t need to enroll in a prescription drug plan. This misconception can lead to costly penalties down the road.

If you go without prescription drug coverage for more than 63 consecutive days, you start accumulating a Part D penalty. Each month without coverage adds to the penalty, and once you enroll in a Part D plan, you’ll have to pay this penalty every month. Unfortunately, the penalty lasts as long as you have a Part D plan, which could be for the rest of your life.

The Centers for Medicare and Medicaid Services (CMS) calculate the Part D penalty. The penalty amount is determined by multiplying the number of uncovered months by 1% of the national base beneficiary premium. For 2023, the national base beneficiary premium is $32.74.

In addition to the penalty, you will also be responsible for the plan’s monthly premium, deductibles, and copayments or coinsurance. It’s important to note that the national base beneficiary premium typically increases each year, which means your penalty will also increase over time. You will pay this penalty every month for the rest of your life.

To avoid this financial burden, it’s crucial to enroll in a Part D plan as soon as you are eligible, even if you aren’t taking any medications currently. This proactive step can save you from long-term penalties and ensure you have coverage when you need it.

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Part D Drug Coverage

Medicare Part D plans, including standalone prescription drug plans and Medicare Advantage Prescription Drug plans, cover a wide range of medications. These plans are required to include all necessary vaccines for illness prevention. Beyond this, each plan has its own drug formulary, which lists the specific prescriptions it covers. For instance, one plan might cover a certain type of insulin while another might not.

Drugs Covered:

Drugs Not Covered:

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Founder, J Johnston Insurance
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