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Original Medicare provides broad hospital and medical coverage, but it does not pay every Medicare-approved expense. Deductibles, coinsurance, and copayments can leave beneficiaries responsible for costs that are difficult to predict.
Medicare Supplement Insurance, commonly called Medigap, is private insurance designed to help pay some of those out-of-pocket costs. A Medigap policy works alongside Original Medicare rather than replacing it. To purchase one, you generally must be enrolled in Medicare Part A and Part B.
Understanding how Medigap plans are standardized, how premiums are determined, and when enrollment protections apply can help Florida residents compare their options more carefully.
What Is Medicare Supplement Insurance?
Medigap is additional coverage sold by private insurance companies. It helps pay the beneficiary’s share of certain expenses for services covered by Original Medicare, including some deductibles, copayments, and coinsurance. Depending on the plan letter, a policy may also provide limited coverage for emergency medical care while traveling outside the United States.
Medigap is not a replacement for Medicare. Original Medicare processes an eligible claim first, and the Medigap policy then pays according to the benefits included in that policy. The beneficiary remains responsible for any costs that neither Original Medicare nor the Medigap policy covers.
Each policy covers one person. Married couples who both want Medigap coverage must purchase separate individual policies.
What Does Medigap Cover?
The exact benefits depend on the plan letter selected. Medigap policies may cover some or all of the following expenses:
- Medicare Part A hospital coinsurance
- Additional hospital costs after Medicare benefits are exhausted, subject to plan limits
- Medicare Part B coinsurance or copayments
- The first three pints of blood
- Part A hospice coinsurance or copayments
- Skilled nursing facility coinsurance
- The Medicare Part A deductible
- Medicare Part B excess charges
- A percentage of qualifying foreign travel emergency expenses
No plan covers every item on this list. Beneficiaries should review the standardized benefit chart for the specific plan letter they are considering.
What Medigap Generally Does Not Cover
Medigap should not be treated as coverage for every healthcare expense. Policies generally do not cover:
- Long-term custodial care
- Routine dental or vision care
- Hearing aids
- Eyeglasses
- Private-duty nursing
Medigap policies sold after 2005 do not include outpatient prescription drug coverage. Someone who wants drug coverage generally needs to consider a separate Medicare Part D plan.
How Are Medigap Plans Standardized?
In Florida and most other states, Medigap policies are identified by letters: A, B, C, D, F, G, K, L, M, and N.
Policies with the same letter provide the same standardized basic benefits, regardless of which insurance company sells them. For example, the standardized medical benefits included in one insurer’s Plan G are the same as those included in another insurer’s Plan G. Premiums, discounts, customer service, and company practices may differ.
Not every insurance company offers every plan letter, and availability may differ by location. Comparing policies should therefore involve both the standardized benefits and the current premiums offered in the applicant’s Florida ZIP code.
Common Medigap Plan Options
Although several standardized plans may be available, Plans G and N are frequently considered by people who are newly eligible for Medicare. Plan F may also be available to certain beneficiaries who became eligible for Medicare before 2020.
Medigap Plan G
Plan G covers many of the cost-sharing gaps associated with Original Medicare, including the Part A deductible, skilled nursing facility coinsurance, Part B coinsurance, and Part B excess charges.
Plan G does not cover the annual Medicare Part B deductible. The beneficiary must pay that deductible before the applicable Part B coverage begins.
A high-deductible version of Plan G may be available in some areas. With that option, the beneficiary pays Medicare-covered expenses until reaching the plan’s annual deductible before the policy begins paying covered benefits.
Medigap Plan N
Plan N covers many of the same standardized expenses as Plan G, but it includes additional cost-sharing.
Beneficiaries may be responsible for copayments for certain office visits and emergency-room visits. Plan N also does not cover the Medicare Part B deductible or Part B excess charges.
Because the premium may differ from Plan G, applicants should compare the potential premium savings with the expenses they could pay when receiving care.
Medigap Plan F
Plan F covers the Medicare Part B deductible along with many other standardized Original Medicare cost-sharing expenses. However, it is not available to everyone.
People who turned 65 on or after January 1, 2020, generally cannot purchase Plan F. Someone who was eligible for Medicare before January 1, 2020, may still be able to purchase it, even if that person had not yet enrolled in Medicare at the time. Eligibility should be confirmed before comparing Plan F with other options.
How Much Do Medicare Supplement Plans Cost in Florida?
There is no single statewide Medigap price. Premiums can vary substantially even when two policies provide the same standardized benefits.
Factors that may affect a Medigap premium include:
- The plan letter
- The insurance company
- The applicant’s location
- The insurer’s pricing method
- Available household or payment discounts
- Tobacco-use status
- Whether medical underwriting is permitted
- Whether the policy is a standard or high-deductible option
- Whether the policy is a Medicare SELECT policy
The same plan letter may be priced differently by different insurance companies. Comparing Plan G from one company with Plan G from another company provides a more useful comparison than comparing two plans with different benefit structures.
Online estimates can provide a starting point, but they should not be treated as a final quote. Applicants should obtain current pricing based on their age, ZIP code, eligibility status, and other rating information before applying.
Remember the Medicare Part B Premium
A Medigap premium is separate from the Medicare Part B premium. Purchasing a Medigap policy does not eliminate the requirement to pay the Part B premium.
The beneficiary pays the private insurance company for the Medigap policy while continuing to pay the applicable Medicare premiums. Medigap premiums may also change over time.
When Is the Best Time to Enroll in Medigap?
For most beneficiaries, the strongest federal enrollment protection is the six-month Medigap Open Enrollment Period.
This one-time period begins on the first day of the month in which both of the following are true:
- The person is 65 or older.
- The person is enrolled in Medicare Part B.
During this period, an insurance company generally cannot deny an available Medigap policy or charge a higher premium because of the applicant’s health history.
The Medigap Open Enrollment Period does not repeat every year. It is different from Medicare’s Annual Enrollment Period and the Medicare Advantage Open Enrollment Period. Those annual periods do not automatically create a new opportunity to purchase any Medigap policy without medical underwriting.
What Happens After the Medigap Open Enrollment Period?
After the six-month enrollment period ends, an insurance company may be permitted to review an applicant’s health history through medical underwriting.
Depending on the circumstances, the insurer may:
- Charge a higher premium
- Offer fewer policy options
- Decline the application
Certain circumstances create guaranteed issue rights, also called Medigap protections. When a guaranteed issue right applies, an insurer cannot deny certain Medigap coverage because of the applicant’s health history. State law may provide additional protections, so Florida residents should confirm the rules that apply to their situation before dropping or changing existing coverage.
A beneficiary should not cancel an existing policy until the new coverage has been approved and the effective date has been confirmed.
Can People Under 65 Purchase Medigap?
Some people qualify for Medicare before age 65 because of a disability or End-Stage Renal Disease.
Federal law generally does not require insurance companies to offer Medigap policies to beneficiaries under 65. Options and enrollment rights may depend on state requirements and insurer availability. Someone under 65 should verify current Florida rules and available policies before assuming that the same options offered to beneficiaries over 65 will be available.
A beneficiary who has Medicare before age 65 generally receives a new six-month Medigap Open Enrollment Period upon turning 65 and being enrolled in Part B.
Can You Use Medigap With Medicare Advantage?
A person cannot use Medigap and Medicare Advantage together.
Medigap supplements Original Medicare. Medicare Advantage is a different way to receive Medicare Part A and Part B benefits through a private Medicare-approved plan. A Medigap policy cannot be used to pay Medicare Advantage deductibles, copayments, premiums, or other plan expenses.
Someone enrolled in Medicare Advantage generally cannot purchase Medigap unless that person is returning to Original Medicare. Enrollment timing, guaranteed issue rights, and policy availability should be reviewed before making the change.
Neither approach is automatically the right answer for everyone. The appropriate fit depends on the person’s:
- Preferred doctors and hospitals
- Prescription medications
- Expected healthcare use
- Travel habits
- Monthly budget
- Comfort with deductibles and copayments
- Preference for provider flexibility or managed-plan features
There is no bad insurance, just coverage that may or may not fit the person’s current needs.
Can You Visit Any Doctor With Medigap?
Most standard Medigap policies can be used when receiving Medicare-covered services from providers who accept Original Medicare.
However, beneficiaries should not interpret this as a guarantee that every doctor will accept them as a new patient. Provider participation should be confirmed directly with the doctor or facility before receiving care.
Medicare SELECT is a type of Medigap policy that may require the beneficiary to use certain hospitals or providers to receive full supplemental benefits. These policies may have lower premiums, but the provider requirements should be reviewed carefully.
Questions to Ask Before Selecting a Medigap Policy
A lower monthly premium does not necessarily mean a policy will be the best fit, and broader standardized benefits do not automatically make a plan appropriate for every applicant.
Before applying, consider asking:
- Which Original Medicare expenses does this plan letter cover?
- What costs will I still pay myself?
- Is the premium based on my current age, age at purchase, or another pricing method?
- What discounts are available?
- How has the insurer historically adjusted premiums?
- Is medical underwriting required for my application?
- Do I have a guaranteed issue right?
- Is this a standard Medigap or Medicare SELECT policy?
- Does the plan include foreign travel emergency coverage?
- Will I also need a separate Medicare Part D plan?
Comparisons should be based on current policy documents and personalized quotes rather than general statewide estimates.
Frequently Asked Questions
Is Medigap the Same as Medicare Advantage?
No. Medigap supplements Original Medicare by helping pay certain deductibles, copayments, and coinsurance. Medicare Advantage is another way to receive Medicare Part A and Part B benefits through a private Medicare-approved plan.
A person cannot use a Medigap policy to pay Medicare Advantage premiums, deductibles, or copayments. Someone enrolled in Medicare Advantage generally must return to Original Medicare before purchasing Medigap coverage. Enrollment rules and Medigap eligibility should be reviewed before making that change.
Do I Need Medicare Parts A and B to Purchase Medigap?
Generally, yes. Medigap is designed to work with Original Medicare, so an applicant generally must be enrolled in Medicare Part A and Part B before purchasing a policy.
A Medigap premium is separate from the Medicare Part B premium. Purchasing supplemental coverage does not eliminate the requirement to pay applicable Medicare premiums.
Are All Medigap Policies With the Same Letter Identical?
Policies with the same plan letter provide the same standardized basic benefits, regardless of the insurance company selling them. For example, the standardized benefits included in one company’s Plan G are the same as those included in another company’s Plan G.
Premiums, available discounts, customer service, underwriting practices, and rate increases may differ by insurer. Applicants should therefore compare both the standardized benefits and the current price.
What Is the Best Time to Purchase a Medigap Policy?
For most people, the best time to apply is during the six-month Medigap Open Enrollment Period. This one-time period begins the first month a person is both 65 or older and enrolled in Medicare Part B.
During this enrollment window, an insurer cannot deny an available policy or charge more because of pre-existing health problems. After the period ends, medical underwriting may apply unless the applicant has a guaranteed issue right or another applicable protection.
Can I Change Medigap Plans at Any Time?
A person may apply for a different Medigap policy at any time, but acceptance is not always guaranteed. Outside the Medigap Open Enrollment Period or a guaranteed issue situation, an insurance company may review the applicant’s health history, charge a different premium, or decline the application.
Do not cancel an existing policy until the new policy has been approved and its effective date has been confirmed.
Does Medigap Cover Prescription Drugs?
Medigap policies sold after 2005 do not include outpatient prescription drug coverage. A beneficiary who wants prescription coverage may need to enroll in a separate Medicare Part D plan.
Prescription needs should be evaluated separately because formularies, pharmacy networks, premiums, and medication costs can vary among Part D plans.
Does Medigap Cover Dental, Vision, or Hearing Care?
Medigap generally does not cover routine dental care, vision services, hearing aids, eyeglasses, long-term custodial care, or private-duty nursing. Some policies may cover qualifying foreign travel emergency expenses, subject to the standardized plan benefits and applicable limits.
Applicants should review the policy documents rather than assume that supplemental coverage includes every service Original Medicare does not cover.
Can My Spouse and I Share One Medigap Policy?
No. A Medigap policy covers one person. If both spouses want Medicare Supplement coverage, each person must purchase a separate individual policy.
Some insurers may offer household discounts, but availability and eligibility requirements vary by company.
Is Plan F Available to Everyone?
No. Plan F generally is not available to people who turned 65 on or after January 1, 2020. Someone who was eligible for Medicare before that date may still be able to purchase Plan F, subject to availability and applicable enrollment rules.
People who are newly eligible for Medicare commonly compare other available options, including Plans G and N.
Does Medigap Pay Every Cost That Original Medicare Does Not Cover?
No. Medigap helps pay certain out-of-pocket costs associated with Medicare-covered services, but it does not cover every healthcare expense. The amount paid depends on the standardized benefits of the selected plan letter.
Before enrolling, applicants should review what the policy covers, what it excludes, and which expenses will remain their responsibility.
Conclusion
Medigap can make some Original Medicare expenses more predictable, but the plan letter is only one part of the decision. Florida residents should also evaluate current premiums, enrollment protections, underwriting requirements, prescription coverage, provider preferences, and the expenses that remain outside the policy.
The goal is not to identify a universally “best” plan. It is to find coverage that fits the person’s healthcare needs, financial priorities, and current season of life.
ProCare Consulting works for clients, not insurance companies. A licensed advisor can help Florida residents compare current Medigap policies, understand their enrollment rights, and review how each option may fit their circumstances.
Contact a licensed ProCare Consulting advisor to request a personalized comparison of Medicare Supplement plans available in your Florida ZIP code.
