Medicare Advantage and Part D Rules Are Changing Again for 2027

If you are on Medicare, you may be getting used to hearing the same sentence every year:

“Medicare is changing again.”

For 2027, that sentence is particularly important.

The Centers for Medicare & Medicaid Services (CMS) has finalized a new round of rules affecting Medicare Advantage and Medicare Part D. Some changes deal with what beneficiaries pay for prescription drugs. Others affect how Medicare Advantage plans are paid, how plans earn Star Ratings, how supplemental benefits are administered, and how certain benefits must be explained.

None of this means Medicare Advantage is suddenly good or bad, or that everyone should change plans.

It means something much simpler:

The Medicare plan that worked for you in 2026 should not automatically be assumed to be the right plan for you in 2027.

That is why reviewing your coverage each year matters.

The 2027 Part D Out-of-Pocket Limit Will Be $2,400

One of the biggest numbers Medicare beneficiaries should know for 2027 is $2,400.

For 2026, the annual out-of-pocket threshold for covered Part D prescription drugs is $2,100. For 2027, CMS has increased that threshold to $2,400.

This is the amount of qualifying out-of-pocket spending that can bring a beneficiary into the catastrophic phase of Part D.

Once you reach the threshold, you generally pay no additional cost sharing for covered Part D drugs for the remainder of the calendar year.

That is still a major improvement compared with the old Part D system, when beneficiaries taking extremely expensive medications could continue paying substantial coinsurance.

But there is an important word in that sentence:

Covered.

The $2,400 protection does not mean every prescription you take is automatically covered.

Every Part D plan can still have its own:

• Formulary
• Drug tiers
• Preferred pharmacies
• Prior authorization requirements
• Step-therapy requirements
• Quantity limits

A drug that isn’t covered by your plan may create a very different financial problem.

We explain this distinction in more detail in our guide, What the Latest Medicare Drug Changes Mean for Beneficiaries.

The Maximum Standard Part D Deductible Rises to $700

Here is another number worth circling.

The standard Part D deductible increases from $615 in 2026 to $700 in 2027.

That does not mean every Medicare drug plan will have a $700 deductible.

Some plans may charge less. Some may exempt certain drug tiers from the deductible. Plan designs vary considerably.

But $700 becomes the defined standard deductible amount for 2027.

And this is why comparing Part D plans solely by monthly premium can be a mistake.

Imagine seeing two plans:

Plan A costs less per month.

Plan B costs more per month.

It would be easy to conclude that Plan A is cheaper.

Not necessarily.

If Plan A has a higher deductible, places one of your medications on a more expensive tier, or does not give you preferred pricing at your pharmacy, the supposedly cheaper plan could cost you more over the entire year.

With Part D, premium is only one part of the cost equation.

For a deeper look at formularies, tiers, deductibles and pharmacy networks, see What Is Covered Under Medicare Part D Drug Plans?.

The Part D Coverage Gap Is Not Coming Back

Some longtime Medicare beneficiaries still remember the infamous Part D “donut hole.”

The old coverage-gap system has been eliminated.

CMS’s 2027 final rule formally codifies several of the major Part D changes created by the Inflation Reduction Act, including the elimination of the coverage gap, the lower annual out-of-pocket structure and zero beneficiary cost sharing once the catastrophic phase is reached.

In other words, we are not going back to the old Part D structure.

But don’t confuse a simpler benefit structure with a simple decision.

Plans can still differ dramatically.

Your prescriptions still matter.

Your pharmacy still matters.

And the formulary still matters.

A Part D Premium Program Ends for 2027

There is another 2027 development that has received much less attention.

CMS announced in July 2026 that the Part D Premium Stabilization Demonstration will end for 2027.

The voluntary demonstration had been introduced for standalone prescription drug plans beginning in 2025 following the major redesign of Part D.

CMS says Part D insurers now have enough experience with the redesigned benefit to develop their bids without continuing the demonstration.

What does that mean for you?

It does not mean everyone’s Part D premium will increase.

It does mean beneficiaries should pay particularly close attention to their actual 2027 premium rather than assuming their 2026 price will continue.

CMS has announced a 2027 Part D base beneficiary premium of $41.33, but this is a technical benchmark used in calculating Part D premiums—not a promise that your individual drug plan will cost $41.33 per month. Actual premiums vary by plan.

Your plan’s actual premium is the number that matters.

Medicare Advantage Payments Are Changing Too

Medicare Advantage plans receive payments from the federal government to provide Medicare-covered services to their members.

For 2027, CMS says its finalized payment policies are projected to produce a net average increase of 2.48%, or more than $13 billion, in Medicare Advantage payments.

When CMS includes its estimate of changes in beneficiary risk scores related to population characteristics and coding practices, the projected payment change is 4.98%.

That does not mean your Medicare Advantage benefits will increase by 2.48%.

And it certainly doesn’t mean your copayments will fall by 2.48%.

Those are payments to Medicare Advantage organizations.

Insurance companies still decide how to structure individual plans within Medicare’s rules.

That can include changes in:

• Premiums
• Medical copayments
• Hospital costs
• Maximum out-of-pocket limits
• Dental benefits
• Vision benefits
• Hearing benefits
• Over-the-counter allowances
• Prescription coverage
• Provider networks
• Service areas

This distinction is extremely important.

A news headline saying Medicare Advantage payments are increasing does not tell you what will happen to your particular Medicare Advantage plan.

Your Medicare Advantage Plan Is Local

Medicare Advantage isn’t one giant national insurance plan.

Plans can vary by county.

An insurance company might offer an attractive PPO in one county and not offer that plan at all 30 miles away.

An insurer can also change its service area from one year to another.

That is why Medicare plan comparisons should always begin with your ZIP code or county.

Our guide to What Medicare Plans Are Available in My Area? explains why location plays such an important role.

Star Ratings Are Changing

CMS is also revising the Medicare Advantage and Part D Star Ratings program.

Star Ratings are intended to help beneficiaries compare plan performance and are also used in determining certain Medicare payments to plans.

For 2027, CMS is eliminating 11 measures that it says are largely focused on administrative processes or areas where plans perform so similarly that the measures provide little useful distinction to beneficiaries.

CMS is attempting to focus the rating system more heavily on actual clinical care, outcomes and patient experience.

That sounds technical—and frankly, much of it is.

But here’s the practical point:

Do not choose a Medicare plan based solely on its Star Rating.

Ratings can be useful.

They are not a substitute for checking your doctors, hospitals, prescriptions and total financial exposure.

A five-star plan that doesn’t include your cardiologist isn’t necessarily your five-star plan.

Supplemental Benefits Are Getting More Oversight

Medicare Advantage plans have increasingly competed by offering supplemental benefits that Original Medicare generally doesn’t provide.

These can include things such as dental, vision, hearing, transportation, food-related benefits for qualifying members and over-the-counter allowances.

For certain Special Supplemental Benefits for the Chronically Ill, known as SSBCI, CMS is strengthening transparency requirements.

Plans will have to publicly post their plan-developed eligibility criteria for these benefits.

CMS is also clarifying rules surrounding debit cards used to administer supplemental benefits. Among other requirements, the cards must be electronically linked to plan-covered items and services so eligibility can be verified at the point of sale, and cards must be limited to the applicable plan year.

That’s a good reminder not to choose a Medicare Advantage plan simply because an advertisement promises a large allowance.

Ask:

What exactly can I use it for?

And:

Do I actually qualify for it?

Your Doctor Network Still Matters

No matter how many rules CMS changes, one of the most important Medicare Advantage questions remains very old-fashioned:

Will your doctors accept the plan?

Don’t ask only:

“Do you take Medicare?”

Instead, ask whether your physician accepts the exact Medicare Advantage plan you are considering for 2027.

Networks can change.

Hospital contracts can change.

Medical groups can change.

And a PPO does not automatically mean every doctor will accept the plan.

Our guide, Can I Use My Current Doctor With Medicare Advantage?, explains how to check this properly.

Watch Your Annual Notice of Change

If you already have Medicare Advantage or Part D coverage, one of your most important pieces of mail this fall will be your Annual Notice of Change, usually called the ANOC.

Don’t throw it into the Medicare mail pile.

And don’t assume:

“My plan worked fine this year, so I’ll just keep it.”

Look for changes involving:

• Monthly premiums
• Medical deductibles
• Drug deductibles
• Hospital copayments
• Specialist copayments
• Drug tiers
• Formularies
• Pharmacy networks
• Maximum out-of-pocket limits
• Supplemental benefits

Sometimes the plan name barely changes while the economics underneath it change considerably.

Medicare Is a Total-Cost Decision

This may be the most important lesson heading into 2027.

Premium is not the same thing as cost.

A $0-premium Medicare Advantage plan can still involve thousands of dollars in medical cost sharing during a bad health year.

A low-premium Part D plan can become expensive if your prescriptions fall on unfavorable tiers.

And a higher-premium plan isn’t automatically a bad deal if it substantially reduces the expenses that matter to you.

Think in terms of total potential annual cost.

That includes your premium plus the medical and prescription costs you could reasonably expect to pay.

You can read more about this in How Do I Know What My Out-of-Pocket Costs Will Be in Medicare?.

What Should You Do Before Choosing a 2027 Medicare Plan?

You don’t need to become a Medicare expert.

You need to know the right questions.

Before enrolling or automatically renewing coverage, check:

Are my doctors and hospitals in the network?

Are all my prescriptions on the formulary?

Which pharmacy gives me the best pricing?

What are my deductible and copayments?

What is my medical maximum out-of-pocket exposure?

What changed from 2026?

What will this plan probably cost me over an entire year—not just every month?

Those questions are far more useful than asking someone:

“What’s the best Medicare plan?”

There is no universally best Medicare plan.

There is only the plan that best fits your doctors, prescriptions, finances, location and tolerance for financial risk.

The Bottom Line

Medicare Advantage and Part D are changing again for 2027.

The Part D annual out-of-pocket threshold rises to $2,400. The standard deductible rises to $700. The Part D Premium Stabilization Demonstration ends. Medicare Advantage payment methodology and Star Ratings continue to change, and CMS is adding new transparency requirements around certain supplemental benefits.

But don’t let all those regulations distract you from the decision sitting at your kitchen table.

The real question isn’t:

“What did Medicare change?”

The real question is:

“What do those changes mean for me?”

Your 2026 plan may still be an excellent choice in 2027.

Or it may not.

Review it before you renew it.

At MedicareSelfEnroll.com, our philosophy is simple:

Education First. Enrollment Second.

We don’t sell you plans. We help you find the right choice.

You can also use the official Medicare website to compare Medicare coverage and plans and review CMS’s official 2027 Medicare Advantage and Part D Final Rule for additional information.

Medicare plan availability, premiums, benefits, formularies, provider networks and cost sharing vary by plan and geographic area. Always verify the specific 2027 plan details before enrolling.