Medicare Part D

Part D Drug List Changes for 2027 — Garland, Texas

GARLAND, Texas — The envelope usually shows up in late September. It is thin, it looks like junk mail, and it has one of the driest names in all of Medicare: the Annual Notice of Change, or ANOC. For anyone in Garland who takes a regular prescription, it is also the single most important piece of paper that will arrive this fall. It tells you, in advance, how your Part D drug plan will treat your medicines starting January 1, 2027 — including whether a drug you take today will still be covered the same way, or whether it will move to a different tier or come with new rules attached.

Why a covered drug can change in 2027

Every Part D plan — whether it is a stand-alone drug plan or the drug portion of a Medicare Advantage plan — publishes a formulary. That is just the list of drugs the plan covers and the rules that go with each one. Formularies are not frozen. Plans update them each year, and Medicare allows those updates as long as the plan still covers the required categories of drugs and gives members notice.

So even if nothing about your health has changed, the plan around your prescription can change. A generic version may have come to market. A manufacturer contract may have shifted. Clinical guidelines may have moved. The medicine in the bottle is the same. The paperwork around it may not be.

Tiers, in plain English

Most drug plans sort covered medicines into "tiers." Lower tiers usually mean lower cost sharing; higher tiers usually mean more. A plan may have four, five, or six tiers, and the exact structure varies.

What matters for planning is this: a drug can move from one tier to another between plan years. A medicine that sat on a lower tier in 2026 may sit on a higher one in 2027, or the other way around. The ANOC will tell you if your specific drugs are moving. It will not always jump out — you may need to look at the drug list changes attached to the notice.

The three utilization management tools

Beyond tiers, plans use three tools to manage how drugs are used. Any of them can be added or removed at the start of a new plan year.

Prior authorization. Before the plan will pay, your doctor has to send in paperwork explaining why you need this drug. It is not a denial — it is a checkpoint.

Step therapy. The plan asks you to try a preferred drug first. If that one does not work or you cannot tolerate it, the plan will then cover the drug your doctor originally wanted.

Quantity limits. The plan will only cover a certain amount over a certain time — for example, a set number of pills per month. Anything above that needs an exception.

None of these mean the drug is off the formulary. They mean there is a new hoop between you and the pharmacy counter.

How to actually read your ANOC

When the notice arrives, do three things.

First, find the section that lists changes to the drug list. Look up each of your regular prescriptions by name. Note the tier for 2027 and check for a "PA," "ST," or "QL" flag — those stand for prior authorization, step therapy, and quantity limit.

Second, look at the plan's overall changes: the deductible for 2027 (Part D deductibles can be up to $700), the pharmacy network, and whether the plan still contracts with the pharmacy you use in Garland.

Third, compare. The Annual Enrollment Period runs October 15 through December 7, and that is your window to switch to a different Part D or Medicare Advantage plan for a January 1 start. Garland is in Dallas County, where 75 Medicare Advantage plans from 12 carriers are offered for 2027 — including 20 new plans, with 29 not returning and 9 renamed from the 2026 lineup. Texas Independence Health Plan is new to the county, while American Health Advantage of Texas is not offering plans in the county next year. The Plan Finder at medicare.gov lets you enter your drugs and pharmacy and see how each option would handle them.

What is new at the program level for 2027

Two figures are worth keeping in mind while you read.

The Part D out-of-pocket cap is $2,100 in 2026 and $2,400 in 2027. Once your covered drug spending reaches that amount in the year, you pay nothing for covered drugs the rest of the year. The old coverage gap — the "donut hole" — has been gone since 2025, so the benefit now has three phases instead of four.

You can also opt into the Medicare Prescription Payment Plan, which spreads what you owe for covered drugs across monthly bills from the plan instead of paying the full amount at the pharmacy. It does not lower your total, but it can make a big January refill easier to manage. Higher-income beneficiaries — generally single filers above $109,000 — also pay an income-related surcharge (IRMAA) on Part D premiums.

If you get caught by surprise in January

If you fill a prescription in early 2027 and learn at the counter that it now needs prior authorization or step therapy, you usually are not stuck. Part D plans are generally required to provide a temporary transition fill for members who are already taking a drug when a new rule kicks in. That fill buys time — typically about a month — to either get the prior authorization approved, try the preferred drug under step therapy, or ask the plan for a formal exception with your doctor's support.

If an exception is denied, you have appeal rights, and the notice you receive will explain the steps.