Learn About AARP Supplemental Health Insurance Options

Understanding AARP Supplemental Health Insurance Basics

Supplemental health insurance, often called "Medigap" or "Med Sup," works alongside Medicare to help cover costs that Original Medicare does not pay. When you have Original Medicare (Part A and Part B), you are responsible for deductibles, copayments, and coinsurance amounts. These out-of-pocket costs can add up quickly, especially if you need frequent medical care or hospitalization. Supplemental insurance fills some or all of these gaps, depending on which plan you choose.

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AARP offers supplemental health insurance plans through partner insurance companies. These are standardized plans, which means that Plan G offered by one company covers the same services as Plan G offered by another company. However, the price you pay can vary significantly between insurers. As of 2024, there are 10 standardized Medigap plans available, labeled A through N. Each plan covers different combinations of costs.

It is important to understand that supplemental insurance is different from Medicare Advantage plans (Part C). Medicare Advantage is an alternative way to receive your Medicare benefits through a private insurance company. Supplemental insurance, by contrast, works with Original Medicare to pay secondary costs. You keep your Original Medicare coverage and add supplemental insurance on top of it.

The relationship works this way: you go to a doctor, the doctor bills Medicare, Medicare pays its share, then your supplemental plan pays what Medicare did not cover (up to the limits of your specific plan). This arrangement gives you predictability in your healthcare costs and access to any doctor who accepts Medicare.

Practical Takeaway: Before exploring AARP supplemental options, gather information about your current healthcare spending, including how often you see doctors, take prescription medications, and use hospital services. This information will help you understand which plan type might match your needs.

How AARP Supplemental Plans Are Structured

AARP supplemental health insurance plans are sold through United Healthcare, one of the largest insurance companies in the United States. The plans follow the standardized Medigap framework set by federal law, which means the coverage details are regulated and consistent. The 10 available plans—A, B, C, D, G, K, L, M, N, and high-deductible G—offer varying levels of coverage at different price points.

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Plan A is the most basic and lowest-cost option for many people. It covers Medicare coinsurance for Part B services and the Part B deductible. Plan G is one of the most popular because it covers nearly all out-of-pocket costs except the Part B deductible. The high-deductible Plan G is less expensive monthly but requires you to pay a set deductible ($2,940 in 2024) before the plan starts paying benefits. Plans K and L cover a percentage of costs rather than the full amount, making them more affordable but leaving you with some out-of-pocket expenses.

AARP also offers supplemental coverage for specific situations. If you are under age 65 and have End-Stage Renal Disease (ESRD) or are a disabled Medicare beneficiary, different rules apply to Medigap coverage. Some plans have waiting periods for pre-existing conditions, though recent changes have reduced these restrictions. The waiting period for coverage of pre-existing conditions cannot exceed six months.

Premium costs vary based on three main factors: your age when you first purchase the plan, your location, and the insurance company you choose. AARP plans are offered in all 50 states, though some specific plans may not be available in every state. Your age at the time you join affects your rate, and many plans use "issue-age rating," meaning you pay based on your age when you start coverage. Other plans use "attained-age rating," where your premium increases as you get older.

Practical Takeaway: Visit the AARP website or request printed materials to view a side-by-side comparison of available plans in your state. Compare what each plan covers and the monthly premium costs, so you can see which plans fit your budget and healthcare needs.

Enrollment Periods and Timing Considerations

Understanding when you can purchase AARP supplemental insurance is crucial because missing certain enrollment windows may result in higher premiums or coverage delays. The best time to purchase Medigap coverage is during your "Open Enrollment Period," which begins the month you turn 65 and are enrolled in Medicare Part B. This period lasts six months and provides the strongest consumer protections. During this window, insurance companies cannot deny you coverage or charge higher premiums based on pre-existing health conditions.

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If you enroll during your Open Enrollment Period, the insurance company must accept you regardless of your health status. This is called "guaranteed issue" coverage. You pay the same premium as anyone else of your age in your state (depending on the rating method used), not a higher rate due to any medical conditions you may have. This protection is valuable and applies to all standardized Medigap plans.

If you enroll after your Open Enrollment Period ends, you may face "underwriting," a process where the insurance company reviews your health history. They can deny your application, impose a waiting period before certain benefits start, or charge you more than the standard rate. Some states have additional protections that limit these actions, but they vary by location. Several states provide "continuous open enrollment" or other protections for people who did not enroll during their initial six-month window, so you should learn about your specific state's rules.

Life events can trigger additional enrollment opportunities. If you lose employer coverage, retire, or experience other qualifying changes, you may be able to enroll outside of the standard period. However, you must typically act within a specific timeframe after the life event occurs. Coordinating your Medigap enrollment with your Medicare enrollment requires careful planning to avoid gaps in coverage.

Practical Takeaway: Mark your calendar for your Open Enrollment Period (the six months starting with the month you turn 65 and enroll in Part B). Contact AARP or an insurance broker at least two months before you want coverage to begin, allowing time for the application process.

Comparing AARP Plans to Other Supplemental Options

While AARP is a well-known brand in supplemental insurance, it is important to understand that you are not purchasing insurance directly from AARP. Instead, AARP endorses and markets plans sold by United Healthcare. Other insurance companies also sell Medigap plans with identical coverage—the only differences are the premiums charged and the customer service experience. Companies such as Cigna, Humana, Mutual of Omaha, and many regional insurers offer the same standardized plans.

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Because coverage is standardized, Plan G from AARP (United Healthcare) covers exactly the same services as Plan G from any other company. The main reasons to choose one company over another are price and reputation for customer service. AARP-branded plans may appeal to people who value the AARP name and services, such as access to AARP publications, discounts on other products, and member communities. However, you can save money by comparing quotes from multiple insurers for the same plan.

Some people consider Medicare Advantage plans (Part C) as an alternative to Original Medicare with supplemental insurance. Medicare Advantage plans are often less expensive and may include prescription drug coverage and dental or vision benefits built in. However, they typically involve network restrictions, meaning you must see doctors within the plan's network (except in emergencies). Original Medicare with supplemental insurance offers greater flexibility to see any doctor who accepts Medicare. The choice between these approaches depends on your healthcare preferences and budget.

Another option is to purchase supplemental insurance from companies not affiliated with AARP. These plans offer no difference in coverage but may have different prices or service features. Some companies specialize in serving particular geographic regions or age groups. Shopping beyond AARP-marketed plans could reveal lower premiums for the same coverage. Many people benefit from working with a local insurance broker who can compare multiple carriers.

Practical Takeaway: Request quotes for the same Medigap plan from at least three different insurers, including AARP. Record the monthly premium, any discounts (such as spousal or non-tobacco discounts), and the customer service rating each company receives. The lowest price for identical coverage may vary by several hundred dollars per year.

Costs, Discounts, and Financial Planning for Supplemental Insurance

AARP supplemental insurance premiums vary widely depending on the plan, your age, your location,

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