Medicare Part D

Why a drug covered today in Lancaster can need extra steps in 2027

LANCASTER, Texas — The envelope that lands in Lancaster mailboxes every September is easy to toss. Don't. That Annual Notice of Change, or ANOC, is the single document that tells you whether the Part D drug plan you have today will still work the way you need it to on January 1, 2027.

Medicare Part DLancaster, TX

Drug lists, called formularies, are not fixed. The same medication you picked up last month can land on a different tier next year, pick up a prior authorization requirement, or come with a quantity limit it didn't have before. None of that means anything is wrong with your plan — it means Part D plans are allowed to change their rules each year, and the ANOC is how you find out.

What is the Annual Notice of Change and when does it arrive in Lancaster?

The ANOC is a plain-language document your Part D or Medicare Advantage drug plan must mail (or send electronically, if you opted in) by September 30 each year. It compares what your plan looks like this year with what it will look like starting January 1. Lancaster is in Dallas County, and every Part D enrollee in the county gets one from their current plan.

Read it side-by-side with the Evidence of Coverage, which spells out the full rules. If you only have time for one document, read the ANOC — it flags what is actually different.

What does it mean when a drug moves to a different tier?

Formularies group drugs into tiers, usually five. Lower tiers are generally generics; higher tiers are brand-name or specialty drugs. Your share of the cost generally rises with the tier.

A "tier change" means the plan has moved a specific drug from one tier to another for the new plan year. The drug is still covered, but what you pay at the pharmacy counter can change. The ANOC lists these moves. If a medication you take every month shows up on that list, that's your cue to run the numbers for 2027 using Medicare's Plan Finder at medicare.gov.

What are prior authorization, step therapy and quantity limits?

These three tools are called utilization management. They don't remove a drug from the formulary — they add a hurdle before the plan will pay.

• Prior authorization means your prescriber has to get the plan's approval before the pharmacy can fill it.
• Step therapy means you have to try one or more lower-cost drugs first and show they didn't work before the plan covers the one your doctor originally wrote.
• Quantity limits cap how much of the drug the plan will cover in a given time period (for example, 30 tablets per 30 days).

A drug that had none of these restrictions this year can pick one up next year. The ANOC will say so. If that happens, your prescriber's office can usually start the paperwork, and you can request an exception if the restriction doesn't fit your situation.

What happens if my drug changes on January 1?

For most people new to a plan — or already in a plan whose formulary changed — Medicare requires a transition fill. In general, that is a one-time, 30-day supply of the drug within the first 90 days of the plan year, giving you time to work with your prescriber on an exception, an appeal or a switch to a covered alternative.

Transition fills are a safety net, not a solution. Use that window to act, not to wait.

What Part D rules apply in 2026, and what should I watch for in 2027?

A few program-level numbers are set for 2026 and are useful anchors as you read your ANOC:

• Part D out-of-pocket spending is capped at $2,100 in 2026.
• The Part D deductible can be no higher than $615 in 2026.
• The old coverage gap ("donut hole") is gone as of 2025 — Part D now has three phases: deductible, initial coverage and catastrophic.
• The optional Medicare Prescription Payment Plan lets you spread your drug costs across the calendar year in monthly bills rather than paying large amounts at the pharmacy.
• IRMAA surcharges on Part D premiums begin above $109,000 in income for a single filer in 2026.

Your ANOC will show the 2027 versions of your plan's deductible, tier cost-sharing and premium. Compare them to the 2026 numbers printed right next to them.

When can Lancaster residents actually make a change?

The Annual Enrollment Period runs October 15 through December 7, 2026. Changes you make during that window take effect January 1, 2027. If you're in a Medicare Advantage plan, you also get a second window — Medicare Advantage Open Enrollment, January 1 through March 31 — to switch to a different Advantage plan or back to Original Medicare with a stand-alone Part D plan.

Outside those windows, you generally need a Special Enrollment Period to change drug coverage.

How do I read the ANOC without getting lost?

Three practical passes work well:

1. Flip to the summary of changes first. It lists premium, deductible and tier changes in one place. 2. Search the formulary section for every drug you take by name. Note any tier change, new PA, new step therapy or new quantity limit. 3. Check the pharmacy network. Preferred pharmacies can change, and that affects what you pay even when the drug and tier haven't moved.

Then go to medicare.gov, log in with your Medicare number, and run Plan Finder with your current drug list. It will price each 2027 plan in Dallas County against the medications you actually take.