Your Annual Notice of Change arrives in September. Plans are required to have it in your hands before September 30, so if you are waiting for it in October you have already lost time. That is the first thing most people get wrong about this document, and it costs them a week of the Annual Enrollment Period before they even start looking.
The second thing most people get wrong is assuming they should be receiving one. Half the people who call me looking for their ANOC do not actually have one coming. Read on and you will know within two minutes whether you are one of them.
Who Gets an Annual Notice of Change?
Medicare Advantage plans, MAPD plans (Medicare Advantage with drug coverage), and standalone Part D prescription drug plans must send you an Annual Notice of Change. If you are enrolled in any of those, one is on its way in September.
If you have Original Medicare paired with a Medigap policy, you will not receive an Annual Notice of Change, and that is not an oversight. Medigap plans are standardized by federal law. A Plan G is a Plan G everywhere. The benefits do not shift from year to year, so there is nothing to notify you about. The only thing that can change on a Medigap policy is the premium, and carriers handle that separately.
This distinction matters because I regularly hear from people who have had a Medigap plan for years and are convinced their notice got lost in the mail. It did not get lost. It was never sent.
What Does the ANOC Actually Tell You?
The Annual Notice of Change is a side-by-side comparison of what your plan looks like this year versus what it will look like on January 1. Four things are worth your attention.
Your monthly premium. Check whether it is going up, down, or staying the same. Even a small shift changes the annual math on whether your plan remains the right fit.
Cost-sharing on services you actually use. If you see a specialist regularly, find that section. If you had a hospital stay in the past year, look at the inpatient cost-sharing. Generic cost-of-living details about services you have never used are noise. The sections that affect your life are signal.
Your drug formulary. Plans can add, remove, or move drugs between tiers from one year to the next. If a medication you take every day gets moved to a higher tier, your out-of-pocket cost for that drug can change significantly even if the plan’s overall premium stays flat. Check every maintenance medication by name.
Your provider network. Networks are not locked in forever. A hospital or specialist group that was in-network this year may not be next year. If continuity of care with a specific doctor matters to you, confirm they are listed for the coming year.
The Honest Outcome Most People Do Not Hear
After talking with a lot of people about their ANOC, the pattern is almost always the same. Most people who read it carefully find that nothing important changed. The premium moved a few dollars, their doctors are still in network, and the drugs they take are still on the same tier. I tell those people to keep the plan. That is genuinely the most common result.
Nobody says that out loud because it is not a dramatic conclusion. But it is an honest one, and it is the one you deserve to hear before you spend October second-guessing a plan that is working fine.
The cases that do warrant action are real. A formulary change that affects a specialty medication. A hospital leaving the network. A cost-sharing structure that no longer fits how you use care. Those are legitimate reasons to compare other options during the Annual Enrollment Period, which runs October 15 through December 7. The ANOC gives you the information you need to make that call before the window opens.
What Is the Difference Between an ANOC and a Termination Notice?
This is the distinction that matters most, and it is one I have to walk people through every fall.
An Annual Notice of Change means your plan is continuing next year. The costs or coverage are shifting, but the plan itself is still available to you. You are not required to do anything. You can stay enrolled and let January 1 arrive with the updated terms in place.
A termination notice is a different document entirely. It means your plan is leaving your area or exiting the Medicare market altogether. You are not being changed. You are being displaced, and that displacement triggers a Special Enrollment Period and, in most cases, a guaranteed-issue right to purchase a Medigap policy with no health questions asked.
Those rights have a deadline. If your plan is terminating, you have a window to act, and missing it can leave you with fewer options and the possibility of medical underwriting if you want to switch to Medigap later. An ANOC creates none of those rights because your plan is not ending. The two documents look similar in the mail and carry completely different consequences.
If you are not certain which one you received, the cover page will say. A termination notice will use language like “your plan will no longer be available” or “your contract is not being renewed.” An ANOC will say something like “important changes to your plan for next year.” Read the first paragraph before you do anything else.
Why Most People Never Open It
The clients who wish they had acted sooner are not the ones who bought a plan they never used. They are the ones who set the ANOC on a stack of mail and assumed someone would call to walk them through it.
Nobody calls. That is the real problem. The plan mails the document because federal rules require it. What the rules do not require is anyone sitting down with you to explain what the comparison actually means for your specific situation. That is the gap this whole process leaves open, and it is the gap I try to fill.
If you want a second set of eyes on your ANOC before the Annual Enrollment Period opens, that is exactly the kind of conversation worth having. You can also use the Medicare Clarity Score to get a fast read on whether your current coverage has hidden risks worth taking seriously before October 15.
What to Do Before October 15
Step one is confirming you have the right document. Is it an ANOC or a termination notice? The answer changes everything.
Step two is reading the three sections that actually affect your life: your drugs, your doctors, and your cost-sharing on the services you use most. Skip the rest on the first pass.
Step three is deciding whether what changed is material. Small premium increases on a plan with strong drug coverage and an in-network care team may be worth accepting. A formulary change that moves your most expensive medication to the highest tier is a reason to shop.
The Annual Enrollment Period runs October 15 through December 7. Any change you make takes effect January 1. You have time to be deliberate, but only if you start before October.
If you have questions about your coverage beyond what the ANOC can answer, the Medicare FAQs page covers many of the situations that come up most often. And if you are newer to Medicare and want a broader orientation to how the pieces fit together, getting started with Medicare walks through the foundational decisions in plain language.
For those on Medicare Advantage specifically, understanding how Medicare Advantage plan structures work will help you read your ANOC with more confidence. And if you are curious whether a Medicare Supplement might fit your situation better, that is a comparison worth making while you still have the enrollment window in front of you.
We do not offer every plan available in your area. Any information we provide is limited to those plans we do offer in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options. Not affiliated with or endorsed by the federal government or the federal Medicare program.