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Medicare Supplement Insurance (Medigap) Explained

Medicare Supplement Insurance is private insurance that can help cover some of the out-of-pocket costs that Original Medicare (Part A and Part B) does not, such as copayments, coinsurance and deductibles. Comparing Medicare Supplement Insurance plans can help you find the right policy for your health care needs.

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Medigap Plans Help Cover Some Out-of-Pocket Costs

There are 10 Medigap plan types available in most states. Medicare Supplement Insurance plans are sold by private insurance companies, but their basic benefits are standardized by Medicare. These plans are labeled Plan A, B, C, D, F, G, K, L, M and N, and each plan covers a different set of basic benefits.

In order to purchase one of these Medigap plans, you must already be enrolled in Medicare Part A and Part B, and you can only purchase a plan from an insurer in your state that is licensed to sell them. A Medicare Supplement Insurance plan will cost you a monthly premium in addition to your Medicare Part B monthly premium. Premium costs vary depending on the insurer.

Note: Medigap policies are standardized differently in Massachusetts, Minnesota and Wisconsin.

Not every insurer offers each type of Medigap plan. However, if an insurance company sells any Medigap policy, they must offer at least Medigap Plan A and either Medigap Plan C or Plan F. Medicare Supplement Insurance plans only cover one person, so if you and your spouse are both eligible, you’ll each need to purchase a separate policy.

Note: You cannot purchase a Medigap plan if you have a Medicare Advantage plan. If you want to disenroll in your Medicare Advantage, you must make sure you can leave your plan before enrolling in Original Medicare and purchasing a Medigap plan.

Medicare Supplement Insurance Comparison 

Comparing Medicare Supplement plans side by side is a great way to determine which plans cover the services you use the most.

Each type of Medigap plan covers four standard benefits:

  • Part A coinsurance and hospital costs
  • Part B coinsurance or copayment
  • Your first three pints of blood
  • Part A hospice care coinsurance or copayment

Each type of plan may also cover one or more of these five additional benefits:

  • Skilled nursing facility care coinsurance
  • Part A deductible
  • Part B deductible
  • Part B excess charge
  • Foreign travel exchange

The chart below illustrates all possible benefits covered by Medicare Supplement Insurance and which plans cover them.

2018 Medigap plans chart

Find the Right Medigap Plan 

Medigap Plan F is the most comprehensive type of plan, which explains why it's also the most popular type of Medicare Supplement Insurance plan. You may be better served with a less comprehensive plan, however, so it's important to compare each type of basic benefit.

Now that you’ve compared Medicare Supplement Insurance plans, you’re ready to purchase the right plan for your needs. Speak with a licensed agent who can help you find an affordable plan from a top private insurance company in your area. 

Learn more or compare quotes by speaking with a licensed agent at 888-264-0148. 

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