If you're enrolled in a Medicare plan, you likely receive a document each fall called the ANOC.
It stands for Annual Notice of Change.
It's more important than it looks.
What the ANOC Includes
The ANOC outlines changes taking effect January 1, such as:
- Premium adjustments
- Copay or coinsurance updates
- Formulary changes
- Drug tier changes
- Provider network updates
- Benefit modifications
- Maximum out-of-pocket changes
It applies to your existing plan - it's a summary of what's different from the current year.
When You Receive It
Plans are required to send the ANOC by September 30 each year.
This timing is intentional - it gives you the opportunity to evaluate changes before the Annual Enrollment Period opens on October 15.
Why It's Overlooked
The document can be long.
It may feel technical.
So many people file it away without reviewing it carefully.
Then January arrives.
And something feels different.
What You Should Look For
Focus on:
- Prescription coverage changes - have your drugs moved to a different tier?
- Specialist or hospital cost-sharing updates - are your copays the same?
- Maximum out-of-pocket changes - has your annual cap shifted?
- Network participation - are your doctors still listed?
- Premium changes - what will your monthly cost be next year?
Small adjustments can create meaningful financial differences.
How to Read Your ANOC Efficiently
You don't need to read every page. Focus on:
- Section on plan costs - premiums, deductibles, copays
- Section on drug coverage changes - formulary and tier updates
- Section on provider network changes - any changes to your network
- Section on benefit changes - dental, vision, hearing, and supplemental benefits
Your plan's website may also have a summary of changes that's easier to navigate.
When to Review It
The ANOC arrives before the Annual Enrollment Period.
That timing is intentional.
It gives you the opportunity to evaluate whether your current plan still fits - before the October 15 AEP window opens.
What to Do After Reviewing
If your plan's changes look acceptable:
- Confirm your doctors and prescriptions are still well-covered
- No action required - your coverage automatically renews
If changes create concerns:
- Compare alternative plans during AEP (October 15 – December 7)
- New coverage takes effect January 1
Final Thought
The ANOC isn't marketing material.
It's your plan's structural update.
If you'd like help reviewing your ANOC and confirming whether your plan still aligns, we can walk through it together.
Clarity before January prevents surprises in January.
Related Topics
- Why Annual Medicare Reviews Matter
- Why Did My Medicare Plan Change This Year?
- What Is the Annual Enrollment Period (AEP)?
- Why Is My Prescription More Expensive This Year?
- What Should I Bring to a Medicare Review?
Benefits vary by plan, county, and eligibility. Always verify with the plan's Summary of Benefits before enrolling.