The September envelope: what a Medicare plan's Annual Notice of Change is telling you

Sometime in September, people enrolled in a Medicare Advantage or Medicare drug plan get a thick envelope from their insurance company. It is easy to file unopened. Inside is the Annual Notice of Change — the document that describes what the plan will look like on January 1.

What the notice is

Medicare describes the Plan Annual Notice of Change plainly: your plan sends it each fall, and it covers any changes in coverage, costs, and more that take effect in January. The timing is not up to the plan. Federal rules require plans to send it for enrollee receipt no later than September 30 each year — the requirement sits in the Medicare Advantage communication rules at 42 CFR §422.2267 and in the parallel Part D rules at §423.2267.

A second document usually travels with it. The Evidence of Coverage is the long one: the full description of what the plan covers, what you pay, and the rules that apply. The notice is the summary of what moved; the Evidence of Coverage is the contract-length version.

What actually changes year to year

Plans are approved one year at a time, so nearly every moving part is allowed to move. In practice the notice is worth reading for four things.

• What you pay monthly and up front. The premium, any deductible, and the plan's annual limit on what you pay out of pocket.
• What you pay per service. Copays and coinsurance for office visits, hospital stays, imaging, and the rest — these move independently of the premium, so a plan can look unchanged at the top and different in the middle.
• The drug list. Which drugs are covered, which tier each one sits on, and whether a drug picked up a requirement like prior authorization or step therapy.
• The network and the extras. Which doctors, hospitals, and pharmacies are in network next year, and what happens to any supplemental benefits the plan includes.

How to read it without reading all of it

The notice is built as a comparison: this year in one column, next year in the next. The efficient pass is to start from your own list rather than from page one. Take the medications you actually take and find each one in the drug list section. Take the doctors and the pharmacy you actually use and check them against the network. Then look at the two or three cost lines that describe how you actually use care.

If nothing on your list moved, that is a real answer and the review is done. If something did, you now know it in September rather than at a pharmacy counter in January.

What the notice is not

It is not a bill, and it is not a request for a decision. It is information delivered ahead of the window in which decisions get made: the Medicare Open Enrollment Period runs October 15 to December 7, and changes made in it take effect January 1, as long as the plan receives the request by December 7 (Medicare's enrollment period table lays out each window and when coverage starts). September is for reading. October through early December is for acting, if there is anything to act on.

If it doesn't arrive

Medicare's guidance is direct: if you don't get this document, contact your plan. Many plans also post it in the member account on their website, and the same information is what an agent or a State Health Insurance Assistance Program counselor would be working from.

If your notice arrives and you would rather have someone read it with you — particularly the drug list section, which is where most surprises live — a licensed agent can go through it with you for free, with no pressure and no obligation to change anything.