What are Supplement Plans?
- Alex K
- Oct 4, 2024
- 3 min read
Updated: Dec 7, 2024

Supplement Plans, also known as Medigap, are private insurance policies designed to cover the "gaps" in Original coverage (Parts A and B) coverage. These gaps often lead to unexpected out-of-pocket costs like deductibles, coinsurance, and copayments that can quickly add up. With Medigap, you pay a predictable premium to protect yourself from these variable expenses, providing financial peace of mind. Let’s dive into how Medigap works and how it can save you money in the long run.
Understanding the Basics of Medigap
Medigap is designed to help pay for certain healthcare costs that Original coverage doesn’t fully cover. For example, coverage typically only covers 80% of outpatient services under Part B, meaning you’re responsible for the remaining 20%. Without Medigap, this could result in significant costs, especially for high-dollar treatments like surgeries or extended hospital stays.
There are 10 standardized Medigap plans (labeled A through N), and each offers a different level of coverage. Plans like Medigap Plan G or Plan N cover most or all cost-sharing requirements, depending on the plan you choose. By paying a fixed monthly premium, you can avoid large unexpected medical bills and ensure predictable healthcare costs.
Reducing Out-of-Pocket Costs
One of the key ways Medigap can save you money is by reducing out-of-pocket costs. Here's a breakdown of what it covers:
Part A Deductible: In 2024, the Part A deductible is $1,632 per benefit period, meaning you could face this cost multiple times in a year. Many Medigap plans cover this deductible in full.
Part B Coinsurance: Original coverage only covers 80% of the approved amount for doctor visits and outpatient care. Medigap pays the remaining 20%, which can add up quickly, especially if you require ongoing treatment.
Skilled Nursing Facility Coinsurance: After 20 days in a skilled nursing facility, most plans start charging $200 per day for days 21-100. Some Medigap plans cover this cost entirely.
Foreign Travel Emergencies: While Original coverage generally doesn’t cover healthcare outside the U.S., certain Medigap plans provide coverage for up to 80% of emergency care costs abroad.
Without Medigap, these expenses can mount quickly, leaving beneficiaries exposed to substantial bills for unexpected medical needs.
Saving Money in the Long Term
The upfront cost of a Medigap plan might seem like an additional expense, but in the long run, it can save you thousands of dollars in healthcare costs. Here’s how:
Predictable Monthly Premiums: Instead of dealing with the uncertainty of large medical bills, you pay a set monthly premium. For many beneficiaries, this predictability helps with budgeting and financial planning.
No Surprises: Even if you face a major health event, your Medigap plan ensures that most (if not all) of your out-of-pocket costs are covered. For example, hospital costs for a 7-day stay without Medigap could exceed $2,000, while with Medigap, they would be covered.
Freedom to Choose Providers: Medigap plans allow you to see any doctor who accepts your coverage, giving you a wide range of choices without the need for network restrictions. This is a benefit over Advantage plans, which often limit you to a specific provider network and may charge higher fees for out-of-network services.
When Is Medigap the Right Choice?
If you frequently visit doctors or specialists, require hospitalization, or need ongoing treatment, Medigap can be a cost-effective solution. Even for those who are relatively healthy, having Medigap as a safety net can be invaluable, especially as healthcare needs often increase with age.
Additionally, if you travel frequently or live abroad for part of the year, a Medigap plan with foreign travel coverage can save you thousands in emergency care costs.
Which Is Better?
It’s important to note that Medigap plans differ from Advantage (Part C) plans. Advantage combines Parts A, B, and sometimes D, offering an alternative to Original coverage. While Advantage plans may have lower premiums, they often come with higher copays, coinsurance, and network restrictions.
In contrast, Medigap works alongside Original coverage, offering more flexibility and comprehensive coverage for out-of-pocket expenses. If avoiding unexpected costs is your primary goal, Medigap is often the better choice. In 2022, nearly 14 million beneficiaries were enrolled in a Medigap plan, underscoring its value for those seeking to minimize healthcare expenses.
A Long-Term Investment in Your Health
While Medigap plans come with monthly premiums, the financial protection they offer can save you from significant healthcare costs down the road. Whether it’s covering high deductibles, coinsurance for extended care, or emergency treatment abroad, Medigap provides peace of mind and security. By reducing your out-of-pocket exposure, Medigap plans can help you stay focused on your health—not your bills.
If you want stability in your healthcare expenses and flexibility in choosing providers, a Medigap plan may be your best investment.