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Medicare Supplement Insurance Enrollment


If you’re currently enrolled in Original Medicare, Part A and Part B, you’ll know that there can be gaps in your coverage that you must pay out of pocket. Copayments, coinsurance, and deductibles are expenses that you are responsible for paying.

That’s where Medicare Supplement insurance comes in. Also known as Medigap, Medicare Supplement insurance plans work alongside your Original Medicare coverage to help fill in some of those coverage gaps. These plans may pay for certain costs that Original Medicare doesn’t cover, including cost sharing and benefits like emergency overseas health coverage and Medicare Part B excess charges (the 15% extra amount that non-participating providers may charge you over what Medicare will pay for a covered service).

When it comes to Medicare Supplement insurance, the timing of your enrollment can greatly determine the options available to you and how easy it is for you to find coverage. It can also affect how much you pay for coverage and whether insurance companies can charge you more or deny you coverage altogether based on pre-existing conditions. Read on to learn more about how enrollment works and the best time to enroll in a Medigap plan.

When am I eligible for Medicare Supplement insurance coverage?

You’re generally eligible for Medigap coverage if you’re enrolled in Original Medicare, Part A and Part B.

If you are under 65 and have Medicare, you may not be able to enroll in Medicare Supplement insurance; federal law doesn’t require states to offer Medigap coverage to beneficiaries under 65. However, some states do offer certain Medigap plans to beneficiaries under 65 with disabilities or certain conditions, such as end-stage renal disease or amyotrophic lateral sclerosis (Lou Gehrig’s disease). Your eligibility and Medigap options will depend on your specific state, so contact your state’s insurance department to learn whether you qualify for Medicare Supplement insurance coverage.

When is the best time to enroll in a Medigap plan?

As mentioned, the timing of your enrollment may affect your coverage choices and costs. In general, the best time to enroll in a Medicare Supplement insurance plan is during your Medigap Open Enrollment Period. This is the six-month period that starts on first day of the month that you are both 65 or older and enrolled in Medicare Part B. Throughout this period, you can enroll in any Medigap plan offered in your service area with guaranteed issue. This means that insurance companies aren’t allowed to use your medical history or pre-existing conditions as the basis for charging you more for coverage or denying you altogether. If you have medical issues or disabilities, it’s especially important to take advantage of this period: Your Medigap Open Enrollment Period may be one of the few times that you have a guaranteed right to enroll in any Medicare Supplement insurance plan in your area.

Once your Medigap Open Enrollment Period passes, you may not be able to enroll in a Medicare Supplement insurance plan as easily if you’re doing so for the first time. If you’re already enrolled in a Medigap plan, you may not be able to switch plans with guaranteed issue (except in certain situations). Without guaranteed-issue rights, you may be subject to medical underwriting and charged higher premiums based on your health status. Insurance companies can also deny you coverage if you have health problems. It’s usually more difficult to find Medicare Supplement insurance coverage after your Medigap Open Enrollment Period has passed if you have disabilities or pre-existing conditions; even if you can find a Medigap plan that will accept you, your premium costs may be higher.

Other situations when you may have guaranteed-issue rights

There are some situations when you may still be able to enroll in a Medicare Supplement insurance plan with guaranteed issue. Those situations may include, but aren’t limited to:

  • Your Medigap insurance company goes bankrupt or misled you.
  • Your Medigap coverage ends through no fault of your own.
  • You’re enrolled in Original Medicare and an employer-sponsored group plan, and your employer coverage is ending.
  • You’re enrolled in a Medicare SELECT plan (a type of Medigap plan that uses provider networks), and you move out of your plan’s service area.
  • You’re enrolled in a Medicare Advantage plan and move out of the plan’s service area, or your Medicare Advantage plan leaves the Medicare program.
  • You enrolled in a Medicare Advantage plan at age 65 when you were first eligible for Medicare Part A, but changed your mind within the first year and want to return to Original Medicare.
  • You dropped your Medigap plan to enroll in a Medicare Advantage plan for the first time, but changed your mind within the first year and want to return to Original Medicare.

Do you have questions about your rights to Medigap coverage, or would you like help finding Medicare Supplement insurance plans that may work for you? Contact eHealth to get personalized assistance from a licensed insurance agent. Or, if you like, you can browse Medicare supplement insurance plan options from the convenience of your home; simply use the plan finder tool on this page to get started.

This website and its contents are for informational purposes only. Nothing on the website should ever be used as a substitute for professional medical advice. You should always consult with your medical provider regarding diagnosis or treatment for a health condition, including decisions about the correct medication for your condition, as well as prior to undertaking any specific exercise or dietary routine.

Pre-existing conditions are generally health conditions that existed before the start of a policy. They may limit coverage, be excluded from coverage, or even prevent you from being approved for a policy; however, the exact definition and relevant limitations or exclusions of coverage will vary with each plan, so check a specific plan’s official plan documents to understand how that plan handles pre-existing conditions.

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The purpose of this communication is the solicitation of insurance. Contact may be made by an insurance agent/producer or insurance company. eHealthInsurance Services, Inc. is not connected with or endorsed by the U.S. government or the federal Medicare program.

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