The Best Medicare Supplement (Medigap) Plans in South Dakota

Christian Worstell
In this article...
  • South Dakota Medicare Supplement (Medigap) insurance helps cover Medicare-related expenses such as copays and deductibles. Learn more about Medicare Supplement plans in South Dakota, including what they might cover and when the best times are to enroll.

Medicare Part A and B coverage is often referred to as Original Medicare. Medicare covers much of the cost of hospitalization and treatment for eligible participants in this federal health insurance plan. For expenses not covered under Medicare, however, many people seek the added financial help that a Medicare Supplement Insurance (Medigap) plan can provide.

Over 55% of Original Medicare (Part A and Part B) beneficiaries in the state of South Dakota are enrolled in a Medigap plan.

Have Medicare questions?

Talk to a licensed agent today to find a Medicare Supplement plan.

What Are the Best South Dakota Medicare Supplement Plans?

In South Dakota and throughout most of the country, you can select from 10 types of standardized plans. Each of these plans is referred to by a letter.

Medicare Supplement Insurance Plans 2025
Medicare Supplement Benefits A B C1 D F1 G K L M N
Part A coinsurance and hospital costs
Part B coinsurance or copayment 50% 75%
First 3 pints of blood 50% 75%
Part A hospice care co-insurance or co-payment 50% 75%
Co-insurance for skilled nursing facility     50% 75%
Medicare Part A deductible   50% 75% 50%
Medicare Part B deductible                
Medicare Part B excess charges                
Foreign travel emergency     80% 80% 80% 80%     80% 80%
1. Plans C and F are not available to new beneficiaries who became eligible for Medicare on or after January 1, 2020.
2. Plans F and G also offer a high deductible plan which has an annual deductible of $2,870 in 2025. Once the annual deductible is met, the plan pays 100% of covered services for the rest of the year. The high deductible Plan F is not available to new beneficiaries who became eligible for Medicare on or after January 1, 2020.
3. Plan K has an out-of-pocket yearly limit of $7,220 in 2025. Plan L has an out-of-pocket yearly limit of $3,610 in 2025.
4. Plan N pays 100% of the Part B coinsurance, except for a copayment of up to $20 for some office visits and up to $50 for emergency room visits that don’t result in an inpatient admission.
View an image version of this table.


Although many different insurers may offer Medigap Plan A insurance, policies that bear the same letter will have the same coverage no matter who offers them. This standardized approach to Medigap insurance makes it easy to choose the most affordable plan without worrying about missing out on the coverage you need.

Each Medicare Supplement Insurance plan offered in the state of South Dakota covers both the required coinsurance for Medicare Part A and at least a portion of the copays required for Part B. Medigap plans also provide a full 365-day extension of hospitalization coverage in addition to that offered by Original Medicare.

Medigap Plans F and G are available in standard versions and high-deductible versions to allow you a greater measure of flexibility when choosing the right plan for you.

The Medicare Access and CHIP Reauthorization Act of 2015 included provisions that removed access to Medigap Plans C and F for those who were not eligible for Medicare prior to January 1, 2020. Those who were first eligible for Original Medicare before that date, however, can still enroll in these Medicare Supplement Insurance plans if they're available in their area.

The most commonly chosen Medigap plans are Plans F, G and N.

Have Medicare questions?

Talk to a licensed agent today to find a Medicare Supplement plan.

How Do I Enroll in a South Dakota Medigap Plan?

The best time to enroll in Medigap coverage is during the initial six months starting with the first day of the month you turn 65 and become eligible for Medicare.

During this six-month period, you can choose from among any of the available Medigap plans offered in South Dakota by any company. You cannot be turned down for these plans because of pre-existing conditions. Insurers must also offer you the policy you choose at the same premium rates that they would charge a healthy person. This only applies, however, during your initial six months of Medigap eligibility.

After your six-month period of Medigap open enrollment eligibility expires, insurers can take pre-existing conditions into account when determining the rates you will pay for your Medigap insurance. They may even decline to cover you at all if your medical conditions are deemed to be too risky. For these reasons, it is essential to obtain Medicare Supplement Insurance during the initial six-month eligibility period. Doing so could guarantee that you can get the plan you want at a rate you can afford.

Even if you do not take advantage of the guaranteed eligibility available to you in the first six months after you turn 65, you may still be able to obtain Medigap insurance on the same preferable terms. Guaranteed issue rights are available in a number of different circumstances, such as:

  • You have Medicare Advantage, and your plan stops providing service in your area or you move out of the coverage area.
  • You chose Medicare Advantage over Medigap or switched from Medigap to Medicare Advantage and want to change back within a year of this decision.
  • Your Medigap insurance company goes bankrupt.

These are not the only situations in which you may have guaranteed issue rights for Medigap coverage.

Helpadvisor.com is owned and operated by Tranzact, the parent company of TZ Insurance Solutions LLC, which is the owner/operator of MedicareSupplement.com and other websites mentioned on HelpAdvisor and which has a financial relationship with some of the carriers listed on HelpAdvisor.

Christian Worstell
About the Author

Christian Worstell is a senior Medicare and health insurance writer with HelpAdivsor.com. He is also a licensed health insurance agent. Christian is well-known in the insurance industry for the thousands of educational articles he’s written, helping Americans better understand their health insurance and Medicare coverage.

Christian’s work as a Medicare expert has appeared in several top-tier and trade news outlets including Forbes, MarketWatch, WebMD and Yahoo! Finance.

While at HelpAdvisor, Christian has written hundreds of articles that teach Medicare beneficiaries the best practices for navigating Medicare. His articles are read by thousands of older Americans each month. By better understanding their health care coverage, readers may hopefully learn how to limit their out-of-pocket Medicare spending and access quality medical care.

Christian’s passion for his role stems from his desire to make a difference in the senior community. He strongly believes that the more beneficiaries know about their Medicare coverage, the better their overall health and wellness is as a result.

A current resident of Raleigh, Christian is a graduate of Shippensburg University with a bachelor’s degree in journalism. You can find Christian’s most recent articles in our blog.

If you’re a member of the media looking to connect with Christian, please don’t hesitate to email our public relations team at Mike@MyHelpAdvisor.com.

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