The California Medigap Birthday Rule gives California residents a 60-day window each year, starting on their birthday, to switch to an equal or lesser-benefit Medigap plan from any carrier without answering a single health question. It exists because Medigap premiums tend to rise as you age, and without this protection you would normally have to pass medical underwriting to move to a cheaper plan. This guide walks through who qualifies and the exact steps to make the switch before your window closes. Not in CA? For how the Medigap Birthday Rule works in other states, see our Ultimate Medigap Birthday Rule Guide.
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What Is the California Medigap Birthday Rule?
Under California Senate Bill 407, the Birthday Rule lets anyone with an active California Medigap policy switch to a plan with the same or fewer benefits, offered by any insurance company, during the 60 days that begin on their birthday. You cannot be turned down or charged more for a pre-existing condition during this window.
Who Qualifies for the California Birthday Rule?
To use the California Birthday Rule, you need to meet three conditions:
- You live in California.
- You already have an active Medigap (Medicare Supplement) plan.
- You apply within 60 days of your birthday for a plan with equal or fewer benefits.
Remember that the Birthday Rule is for people who already hold a Medigap plan. It does not let a Medicare Advantage member switch to Medigap without underwriting. If you have MA, our California Medigap overview explains the separate paths for switching to Medsupp.
Note: A standard lettered plan and its “Innovative” or “Extra” version count as equal benefits, so a standard Plan G can move to an Innovative or Extra plan of the same letter without review.
How to Switch Medigap Plans During Your Birthday Rule Window
Here is the step-by-step process to switch California Medigap plans during your birthday window:
- Confirm your window. Your 60 days start on your birthday. Mark the deadline so an application doesn’t slip past it.
- Get current quotes. Pull fresh prices on your current lettered plan across carriers, plus any equal or lesser plan you’re considering. A Medigap quote takes a minute.
- Pick an equal or lesser plan. You can keep your plan letter and change companies, or move to a plan with fewer benefits (for example, Plan G to Plan N). You cannot move up to a richer plan under this rule.
- Apply inside the 60 days. Because you qualify, approval is guaranteed and no health questions apply. Our guide to switching Medigap plans covers what the application asks.
- Confirm before you cancel. Wait until your new plan is approved and has a start date before canceling the old one, so you’re never without coverage. Remember you must cancel your old plan after you are approved on a new one. No one, including Senior65, can can your previous plan for you.
💡 Tip: Even if you like your current carrier, check competitors during your window. The same lettered plan can cost less elsewhere, and the Birthday Rule is the one time you can move with guaranteed acceptance.
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What the California Birthday Rule Does Not Let You Do
The rule has clear limits. You can only move to a plan with equal or fewer benefits, so you can’t use it to upgrade to a more comprehensive plan. It applies only to existing Medigap members, not to people switching from Medicare Advantage. And it runs out 60 days after your birthday. Once that window closes, any plan change for the rest of the year goes through medical underwriting. If you want to switch Medigap plans and you are outside of the b-day rule switching window, check out our Medigap Underwriting Checker.
When Should You Use the California Birthday Rule?
The most common reason to act is a premium increase. If your plan’s price has climbed, the Birthday Rule lets you shop the identical plan from a lower-priced carrier and switch with no health review. It’s also worth using if your needs have changed and a lower-benefit plan now fits better. Our team at Senior65 reviews your options each year as your birthday approaches, and for the bigger picture you can read our Ultimate Medicare Switching Guide.
Ready to Switch? Here’s Your Next Step
If your birthday is near, get a quote now and compare your current plan against what other carriers charge. When you’re ready, our team at Senior65 will handle the paperwork and confirm your switch. Our help is always free, and because Medigap prices are set by law, no one can offer you the same plan for less. Call us at 800-930-7956 to switch in just a few minutes.