

Principal writer, insurance and medicare advisory


Managing editor


Medicare Insurance Agent, Creighton university
- Written on February 17, 2025
- Updated February 17, 2025
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Medicare Supplement plans, also known as Medigap plans, offer additional healthcare coverage to Medicare beneficiaries, filling the gaps left by Original Medicare (Medicare Part A and Part B). These plans are offered by private insurance companies and can be a valuable addition to your Medicare coverage. However, with various Medigap plans available, it’s essential to understand how to compare them effectively. In this comprehensive guide, we will explore the key factors to consider when comparing Medicare Supplement plans, helping you make an informed decision about your healthcare coverage.
I. Understanding Medicare Supplement Plans (Medigap)
Medicare Supplement plans, or Medigap plans, are designed to work alongside Original Medicare to cover the out-of-pocket costs that Medicare beneficiaries would otherwise be responsible for. Here are some key aspects of Medigap plans:
- Eligibility:
- To enroll in a Medigap plan, you must already have Medicare Part A and Part B.
- Medigap plans are available to individuals aged 65 and older or those under 65 with certain disabilities in some states.
- Coverage:
- Medigap plans are standardized and labeled with letters (e.g., Plan G, Plan F, Plan N).
- Each standardized plan covers a specific set of essential benefits, ensuring consistency across insurance companies.
- Costs:
- Beneficiaries pay monthly premiums to the insurance company offering the Medigap plan.
- Medigap plans may also have deductibles, copayments, and coinsurance, which vary depending on the plan.
- Portability:
- Medigap plans are portable, meaning you can use them to access healthcare services anywhere in the United States, as long as the provider accepts Medicare.
II. Factors to Consider When Comparing Medigap Plans
When comparing Medicare Supplement plans, consider the following key factors to ensure that the plan aligns with your healthcare needs and budget:
- Plan Type and Coverage:
- Review the standardized Medigap plans available in your state and select the plan that best suits your needs.
- Understand the specific benefits offered by each plan, including coverage for hospital stays, medical services, skilled nursing facility care, and more.
- Premiums:
- Compare the monthly premiums for each Medigap plan you are considering.
- Keep in mind that premiums can vary widely between insurance companies, so it’s essential to shop around for competitive rates.
- Out-of-Pocket Costs:
- Examine the cost-sharing requirements of each Medigap plan, including deductibles, copayments, and coinsurance.
- Consider how these out-of-pocket costs align with your healthcare budget and expected usage.
- Coverage for Part B Excess Charges:
- Some Medigap plans cover Part B excess charges, which can be important if you seek care from healthcare providers who do not accept Medicare’s approved amount as full payment.
- Network Restrictions:
- Medigap plans do not have provider networks, so beneficiaries can see any healthcare provider who accepts Medicare.
- This flexibility can be especially important if you have preferred doctors or specialists.
- Guaranteed Issue Rights:
- Understand the concept of guaranteed issue rights, which provide specific enrollment opportunities for Medigap plans without medical underwriting.
- Knowing when these rights apply can help you avoid medical underwriting and potential denials based on pre-existing conditions.
- Financial Stability of Insurance Company:
- Research the financial stability and reputation of the insurance company offering the Medigap plan.
- Reliable customer service and timely claims processing are essential for a positive experience.
III. Standardized Medigap Plans
Medigap plans are standardized by the federal government, meaning each plan with the same letter designation offers identical benefits, regardless of the insurance company offering it. As of 2022, there are ten standardized Medigap plans labeled A, B, D, G, K, L, M, N, and high-deductible Plan G and high-deductible Plan F. Each of these plans provides a different level of coverage, so it’s essential to choose one that aligns with your healthcare needs and budget.
Here is a brief overview of the standardized Medigap plans:
- Plan A: Offers basic coverage, including Part A coinsurance and hospital costs, Part B coinsurance, and the first three pints of blood.
- Plan B: Includes all of Plan A’s coverage plus coverage for the Part A deductible.
- Plan D: Provides coverage for Part A coinsurance and hospital costs, Part B coinsurance, the Part A deductible, skilled nursing facility care coinsurance, and foreign travel emergencies.
- Plan G: Offers robust coverage, including all of Plan D’s benefits plus coverage for Part B excess charges and the Part B deductible.
- Plan K and Plan L: Provide cost-sharing coverage with lower premiums but higher out-of-pocket limits.
- Plan M: Covers Part A coinsurance, Part B coinsurance, the Part A deductible, skilled nursing facility care coinsurance, and foreign travel emergencies at a reduced cost compared to other plans.
- Plan N: Covers Part A coinsurance, Part B coinsurance, the Part A deductible, skilled nursing facility care coinsurance, and foreign travel emergencies, with some cost-sharing for certain services.
- High-Deductible Plan G and High-Deductible Plan F: Offer similar coverage to their standard counterparts but require beneficiaries to meet a higher annual deductible before coverage begins.
IV. Enrollment Period for Medigap Plans
To enroll in a Medigap plan, beneficiaries must be aware of specific enrollment periods:
- Initial Enrollment Period (IEP):
- The IEP for Medigap plans begins when you are both 65 or older and enrolled in Medicare Part B.
- During this period, you have a guaranteed issue right, meaning insurance companies cannot deny coverage or charge higher premiums due to pre-existing conditions.
- Open Enrollment Period (OEP):
- The OEP for Medigap plans lasts for six months and begins on the first day of the month in which you are 65 or older and enrolled in Medicare Part B.
- During the OEP, you have guaranteed issue rights, ensuring access to Medigap plans without medical underwriting.
- Special Enrollment Periods (SEPs):
- SEPs for Medigap plans may apply in certain situations, such as when you lose employer-sponsored coverage or move to a new area with different Medigap plan options.
- SEPs provide specific enrollment opportunities without medical underwriting.
V. Conclusion
Comparing Medicare Supplement plans is essential for ensuring that you have the coverage you need to meet your healthcare needs while managing your budget effectively. By carefully assessing factors such as coverage, premiums, out-of-pocket costs, and guaranteed issue rights, you can select a Medigap plan that aligns with your healthcare goals and financial circumstances. Making an informed choice about your Medigap coverage will contribute to better overall health and financial security, providing peace of mind as you navigate your Medicare journey.
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