What Is an Annual Notice of Change for Health Coverage?

Updated July 9, 2026 5 min read

Every fall, a fairly plain-looking envelope or email lands in most policyholders’ inboxes, easy to mistake for routine paperwork and set aside until later. That document is often doing more work than it looks like, quietly describing exactly what’s about to change about a plan before the new terms take effect.

The short answer

An annual notice of change is a document a health plan sends before the next plan year begins, summarizing what will be different — things like premium, deductible, covered providers, or drug coverage. It exists so that policyholders can review upcoming changes and make an informed choice during open enrollment, rather than being surprised once the new plan year is already underway.

What’s typically inside

These notices generally walk through a plan’s key terms side by side with the coming year’s version, covering areas like the premium amount, deductible and out-of-pocket maximum, copay and coinsurance structure, and any changes to the network of covered providers or the list of covered prescription drugs. Some notices also flag changes to specific benefits or services that are being added, reduced, or removed entirely. Reading through this comparison is usually the fastest way to understand why a premium changed heading into the new year, since the notice often breaks the increase into its component pieces rather than presenting a single unexplained number.

Why silence usually means automatic renewal

One of the more important features of this notice is what happens if a policyholder does nothing at all. In most cases, taking no action during open enrollment means the plan simply renews automatically, carrying the policyholder into whatever new terms the notice described, whether or not those terms are actually still a good fit. This default-to-renewal structure is convenient in the sense that coverage doesn’t lapse, but it also means a policyholder who skips reading the notice can end up with a materially different plan than the one they thought they still had.

How this differs from a mid-year change

An annual notice is a scheduled, expected part of the plan year cycle, distinct from an unplanned mid-year change that an employer or insurer might make outside the normal renewal timeline. Because the annual notice arrives on a predictable schedule, it’s generally the more thorough and detailed of the two, giving more lead time to compare options before anything actually changes.

What to do with the notice

The takeaway

An annual notice of change is essentially a plan’s way of saying “here’s what’s different, decide accordingly” before a new year of coverage locks in. Treating it as a routine step in an annual financial checkup, rather than mail to skim past, is the more useful habit for making sure the coverage that renews is still the coverage that fits.