Understanding the Illinois Birthday Rule for Medicare Supplement

The Illinois Birthday Rule is a crucial concept to grasp when it comes to Medicare Supplement insurance in Illinois. This rule affects when you can enroll in a Medicare Supplement plan, and it's based on your age.

In Illinois, the Birthday Rule states that you can enroll in a Medicare Supplement plan during the month of your birthday and the three months before or after it. This means you have a six-month window to enroll in a plan.

During this window, you can choose from a variety of Medicare Supplement plans, including Plan A, Plan B, and others.

A different take: Medicare Supplement Plans in Illinois

The Medicare Supplement rules can be complex, but understanding them can help you make informed decisions about your coverage. Illinois has a Birthday Rule that allows current Medicare Supplement policyholders between ages 65-75 to change their plan without medical underwriting.

This rule applies to individuals who have an existing Medicare Supplement policy, not to those who are new to Medicare Supplement. Illinois is one of 12 states that have adopted a Medicare Birthday rule, as of May 2025.

Consider reading: Bcbs Medicare Advantage Illinois

The Birthday Rule provides a 45-day enrollment window that starts on the policyholder's birthday. During this time, they can change to an equal or lesser benefit plan with the same carrier. For example, if a beneficiary has Medigap Plan F with Mutual of Omaha Medicare Supplement and their birthday was January 1, they would be eligible to enroll in Plan G with Mutual of Omaha.

The new plan must have the same or lesser benefit level as the current plan. If the policyholder wants to change to a plan with a higher benefit level, they will need to apply during their Medicare Supplement Open Enrollment Period or qualify for a Special Enrollment Period.

Here are the 12 states that have adopted a Medicare Birthday rule, as of May 2025:

If you live in one of these states and are currently enrolled in a Medicare Supplement Insurance plan, you can take advantage of the Birthday Rule to change your plan without medical underwriting. Contact a licensed insurance agent to review your options and switch plans if you're eligible.

The Illinois Birthday Rule allows Medicare Supplement policyholders between ages 65-75 to change their plan without medical underwriting. This rule is effective as of January 1, 2022.

Policyholders have a 45-day enrollment window that starts on their birthday and they can change to an equal or lesser benefit plan. The new plan would also have to be with the same carrier.

If you're eligible, you can change to a different plan with the same carrier, such as switching from Plan F to Plan G with the same company. Your birthday rule window would last until 45 days after your birthday.

You can see the 12 states with a Medicare birthday rule, including Illinois, in the list below:

If you're wondering which states have a Medicare birthday rule, the answer is 12. These states include California, Idaho, Illinois, Indiana, Kentucky, Louisiana, Maryland, Nevada, Oklahoma, Oregon, Utah, and Virginia.

Some of these states, like Illinois, have already implemented the Medicare birthday rule, while others may add it in 2025 based on pending legislation.

The 12 states with a Medicare birthday rule are listed below:

This list may not be exhaustive, as some states may have introduced legislation to add a Medicare birthday rule in 2025.

The Illinois Birthday Rule allows Medicare Supplement policyholders between 65-75 to change their plan without medical underwriting.

This rule applies to individual policyholders who have an existing Medicare Supplement policy.

The enrollment window starts on the beneficiary's birthday and lasts 45 days.

Policyholders can change to an equal or lesser benefit plan with the same carrier during this time.

For example, if a beneficiary has Medigap Plan F with Company X and their birthday is August 1, they can enroll in Plan G with Company X from August 1 to September 14.

Outside of this window, an application would require underwriting health questions unless a Guarantee Issue situation is present.

The 12 states with a Medicare birthday rule include:

The birthday rule window lasts until February 14, for example, if a beneficiary's birthday is January 1.

Expand your knowledge: Medicare Supplement Birthday Rule States

If you're 65 to 75 years old and have a Medicare Supplement (Medigap) policy in Illinois, you're eligible to enroll in any plan of your choice from your current carrier. The new plan's benefit level must not exceed that of your current plan.

This special open enrollment window lasts for 45 days, starting on your date of birth. It's a great opportunity to review your coverage and make changes without facing denial due to pre-existing health conditions.

In Illinois, this special enrollment window is provided by the state's birthday rule, which allows Medigap beneficiaries to switch to a different plan without medical underwriting. This rule is available to current Medigap plan members who are looking to switch to a different plan.

Curious to learn more? Check out: Aflac Medigap

Medigap is a type of supplemental insurance that helps fill the gaps in Medicare coverage.

Medigap plans are standardized, meaning they offer the same benefits across different insurance companies. There are 10 standardized Medigap plans, labeled A through N.

Medigap plans can be purchased by anyone with Medicare Part A and Part B. You can buy a Medigap policy from any insurance company that is licensed to sell one in your state.

You can enroll in a Medigap plan during your Medigar Advantage Disenrollment Period, which is from January 1 to February 14 of each year. If you're already enrolled in a Medigap plan, you can switch to a different Medigap policy.

Here's an interesting read: Medigap Quotes

If you're between 65 and 75 years old and have a Medicare Supplement (Medigap) policy in Illinois, you have a special chance to enroll in any plan from your current carrier without facing underwriting.

This open enrollment window lasts for 45 days and starts on your date of birth, allowing you to review and change your coverage if needed.

You can change your Medigap plan each year, but the new policy must be of equal or lesser benefit and from the same carrier as your current policy.

This 45-day window is a great opportunity to make changes to your coverage without worrying about being denied due to pre-existing health conditions.

Curious to learn more? Check out: Switch from Advantage to Medigap

The Rule Function is a crucial aspect of understanding Illinois' birthday rule for Medicare supplement plans.

In Illinois, the birthday rule applies to Medicare supplement plans, which can be purchased by people 65 and older.

Medicare supplement plans are standardized, meaning they have the same benefits regardless of the insurance company selling them.

Broaden your view: Blue Cross Blue Shield Medicare Supplement Plan F Illinois

These plans are designed to help fill the gaps in Medicare coverage, such as deductibles and copays.

The birthday rule states that you can enroll in a Medicare supplement plan at any time, as long as you're 65 or older and have Medicare Part A and Part B.

This rule applies to all 50 states, but the availability of plans may vary.