Medigap Birthday Rule: 2026 States and How It Works

As healthcare costs remain an important consideration in retirement, reviewing Medicare coverage can be a valuable part of a comprehensive financial plan. One provision that may create an opportunity for certain retirees is the Medigap birthday rule, which allows eligible individuals in participating states to review and potentially change their Medicare Supplement insurance coverage each year. 

Understanding how this rule works may help retirees find ways to manage healthcare expenses while maintaining appropriate coverage. 

What Is the Medigap Birthday Rule? 

Medigap, also known as Medicare Supplement insurance, helps cover certain out-of-pocket costs that Medicare does not pay, such as copayments, coinsurance, and deductibles, depending on the plan. 

In many states, retirees who change Medigap policies after the initial enrollment period may require medical underwriting. This means an insurance company may review an applicant’s health history and, where state law permits, deny coverage or charge a higher premium. 

The Medigap birthday rule provides an additional enrollment opportunity for eligible policyholders in certain states. During a designated period around their birthday, they may be able to switch to another qualifying Medicare Supplement policy without medical underwriting. 

Each state sets its own rules. Some states allow switching to plans with equal or fewer benefits, while others limit changes to the same plan type or impose additional eligibility requirements. 

Why Does This Matter for Retirees? 

For retirees living on a fixed income or drawing from an investment portfolio, healthcare premiums are an important component of long-term cash flow planning. 

The birthday rule may provide an opportunity to: 

• Evaluate premium savings: Compare available policies to see whether similar coverage is available at a lower cost. 

• Review insurance providers: Depending on state rules, eligible policyholders may be able to move to another insurer without going through medical underwriting. 

• Manage retirement expenses: Potential premium savings may help reduce recurring healthcare costs and preserve assets for other retirement priorities. 

However, a lower premium does not automatically make a policy the better choice. Retirees should also weigh the insurer’s customer service, rate history, policy provisions, and the likelihood of future premium increases. 

What States Offer a Birthday Rule? 

State law determines whether a birthday rule exists and how it works, and more states have adopted one in recent years. The following 15 states offer this opportunity: California, Delaware, Idaho, Illinois, Indiana, Kentucky, Louisiana, Maryland, Nevada, Oklahoma, Oregon, Utah, Virginia, West Virginia, and Wyoming. 

In Virginia, where I’m based, the birthday rule took effect July 1, 2025. Eligible Virginia residents with qualifying Medigap coverage may switch to another policy offering the same benefits from an insurer in Virginia during a 60-day period beginning on their birthday, without medical underwriting. 

Other states have their own versions of this protection, with different enrollment windows and restrictions. Because state requirements can change, retirees should verify the current rules with their state insurance department before making a coverage decision. 

Which States Have a Medigap Birthday Rule in 2026? 

The table below summarizes each participating state’s enrollment window and switching options for 2026.

*In West Virginia, the rule applies to policyholders who have held their current policy for at least 24 months. If your current insurer doesn’t offer a comparable plan, you may be able to switch to a different insurer. 

New Mexico joins the list effective January 1, 2027, and enrollees will have a 60-day window starting on the first day of their birthday month to change their Medigap policy to one of equal or lesser value with no health questions asked. 

Incorporating Healthcare Costs Into Your Retirement Plan 

Healthcare planning extends beyond selecting a Medicare policy. Premiums, out-of-pocket expenses, prescription coverage, and potential future healthcare needs can all influence retirement spending and how long a portfolio lasts. 

An annual review of Medicare Supplement coverage can be a useful opportunity to evaluate whether existing coverage remains appropriate and whether potential savings are available. Retirees should assess any proposed change in the context of their broader financial circumstances. 

Before switching policies, individuals should confirm eligibility, compare total costs and benefits, and verify the new insurer has approved the replacement coverage and that it has taken effect before canceling existing coverage. 

Weighing Cost Against Coverage 

The Medigap birthday rule may provide eligible retirees with greater flexibility to review their coverage and potentially reduce healthcare expenses. As with other retirement planning decisions, the objective is not simply to find the lowest premium, but to balance cost, coverage, and long-term financial security. 

This is intended for informational purposes only. You should not assume that any discussion or information contained in this document serves as the receipt of, or as a substitute for, personalized investment advice from Savant. Please consult your investment professional regarding your unique situation. 

Chase A. Hutter Financial Advisor CFP®

Chase has been involved in the financial services industry since 2014. He earned a bachelor’s degree in finance with a minor in pre-law and history from Southern Illinois University-Edwardsville.