Yes, you can have both Medicare and private insurance at the same time in North Carolina

Many people in North Carolina carry both Medicare and a private health insurance plan. This is legal and common. The two plans can work together, with each one covering different costs or the same costs in different ways. How they work together depends on which type of private insurance you have and the order in which you use them.

The key is understanding which plan pays first — called the primary payer — and which pays second, called the secondary payer. Medicare is not always the primary payer, even though you have it. Your situation determines the order.

Key Takeaways

  • You can hold Medicare and private insurance together, and they coordinate to cover your medical bills.
  • Which plan pays first depends on your age, employment status, and the type of private insurance you have.
  • If you have employer coverage through current work, that plan usually pays first, and Medicare pays second.
  • If you buy a Medigap or Medicare Advantage plan, Medicare is primary and the private plan is secondary.
  • You must tell both insurers about each other so they can coordinate correctly.

When employer insurance pays first and Medicare pays second

If you or your spouse are still working and have health insurance through an employer, that employer plan is usually the primary payer. Medicare becomes secondary and pays after the employer plan has paid its share. This is true even if you are over 65 and enrolled in Medicare.

This rule applies to employers with 20 or more employees. If your employer has fewer than 20 employees, Medicare becomes primary instead. You should verify your employer's size with your benefits office if you are unsure.

When employer coverage is primary, you will submit claims to that plan first. Once it pays, you can then submit the remaining bill to Medicare. Medicare will review what the employer plan paid and cover its portion of the cost.

When Medicare is primary and private insurance is secondary

If you have a Medigap policy (also called Medigap supplemental insurance) or a Medicare Advantage plan, Medicare is the primary payer. Your private plan is secondary and covers costs that Medicare does not pay.

Medigap policies are sold by private insurers and are designed to fill gaps in Original Medicare coverage — things like copayments, coinsurance, and deductibles. Medicare Advantage plans are an alternative to Original Medicare and are also run by private insurers, but they include prescription drug coverage and often dental or vision benefits.

With either of these plans, you submit claims to Medicare first. Medicare processes the claim and pays its share. The remaining balance then goes to your secondary private plan, which pays according to its own rules.

How coordination of benefits works in practice

When you have two insurance plans, they must communicate with each other to avoid overpaying or underpaying your medical bills. This process is called coordination of benefits. Both insurers need to know about each other.

Here is the typical order of events: You receive medical care and the provider sends a claim to your primary insurance. The primary plan reviews the claim, applies your deductible and copayments, and pays its portion. The provider then sends the remaining balance to your secondary insurance. The secondary plan reviews what the primary plan paid and covers what it owes according to its own rules.

You are responsible for any costs that neither plan covers. This might include amounts above your deductible, services not covered by either plan, or costs that exceed the secondary plan's limits.

Medigap plans and how they work with Medicare

A Medigap policy is private insurance sold by companies like AARP, Humana, Blue Cross Blue Shield, and others. It works only with Original Medicare (Parts A and B), not with Medicare Advantage. Medigap covers some or all of the costs that Original Medicare does not pay, such as copayments and deductibles.

There are ten standardized Medigap plans, labeled A through N. Each plan covers a different set of gaps in Medicare coverage. Plan A covers the least; Plan G covers the most. In North Carolina, you can enroll in a Medigap plan during your initial Medicare enrollment period or during the annual open enrollment period from October 15 to December 7.

If you have a Medigap plan, you do not need or want a Medicare Advantage plan at the same time. Having both would be redundant and wasteful. You would pay premiums for both but only use one.

Medicare Advantage plans and supplemental coverage

A Medicare Advantage plan (Part C) is an alternative to Original Medicare. It is run by a private insurance company but must cover at least what Original Medicare covers. Many Medicare Advantage plans include prescription drug coverage (Part D), dental, vision, and hearing benefits that Original Medicare does not offer.

If you have a Medicare Advantage plan, you generally should not buy a Medigap policy. The two plans do not work well together because Medicare Advantage already includes supplemental coverage. Buying both means paying two premiums for overlapping benefits.

Some people do carry a Medicare Advantage plan and employer coverage at the same time. In that case, the employer plan is usually primary, and the Medicare Advantage plan is secondary. You should contact your Medicare Advantage plan to confirm how it coordinates with your employer insurance.

What you must do to coordinate your plans

When you have two insurance plans, you must inform both insurers about each other. This allows them to coordinate benefits correctly and prevents billing errors.

If you have employer coverage and Medicare, tell your employer's benefits office that you have Medicare. Provide them with your Medicare card or your Medicare number. Then contact Medicare (by phone at 1-800-MEDICARE or online at Medicare.gov) and report your employer coverage.

If you have a Medigap or Medicare Advantage plan, the private insurer will already know you have Medicare because you must show your Medicare information when you enroll. However, if you later gain employer coverage or other insurance, notify your Medigap or Medicare Advantage plan when ready.

Keep copies of all insurance cards and policy documents. When you receive medical care, give the provider the name and member ID of your primary plan. The provider's billing office will handle sending the claim to the secondary plan after the primary plan pays.

Costs and premiums when you have both plans

Having two insurance plans means paying premiums for both. If you have employer coverage and Medicare, you typically pay a premium to your employer plan (or it may be deducted from your paycheck) and a premium to Medicare Part B. If you also have a Medigap policy, you pay a third premium to the Medigap insurer.

The cost of a Medigap plan in North Carolina varies by insurer, age, and the specific plan you choose. Plans with more coverage cost more. You can contact insurers directly to request quotes. Some employers offer retiree health coverage that works alongside Medicare; if yours does, that coverage may have its own premium or may be included in your retirement benefits.

Even with two plans, you may still have out-of-pocket costs. Neither plan covers everything. You remain responsible for any costs that fall outside both plans' coverage.

Frequently Asked Questions

Do I have to choose between Medicare and my employer health insurance?

No. You can keep both. If you are still working and your employer offers health insurance, you can stay on that plan and also enroll in Medicare. Your employer plan will be primary and pay first. You should enroll in Medicare when you turn 65 even if you keep working, to avoid a late enrollment penalty.

What happens if I do not tell my insurers about each other?

Claims may not be processed correctly. One plan might pay more than it should, or you might be billed for costs that should have been covered. Billing errors can take months to fix. Always notify both insurers when you have more than one plan.

Can I have a Medicare Advantage plan and a Medigap plan at the same time?

Technically yes, but it is not recommended. Medicare Advantage already includes supplemental coverage, so a Medigap plan would duplicate benefits you already have. You would pay two premiums for overlapping coverage. Most people choose one or the other, not both.

If I have private insurance through my job, do I still need to enroll in Medicare at 65?

Yes. You should enroll in Medicare Part A and Part B when you turn 65, even if you have employer coverage. If you delay enrollment, you may face a permanent late enrollment penalty on your Part B premium. The only exception is if your employer has 20 or more employees and you are actively working; in that case, you can delay Part B enrollment without penalty, but you should still enroll in Part A.

Who do I contact if my two insurance plans are not coordinating correctly?

Contact the billing office at the provider where you received care. They can verify which plan is primary and resubmit the claim if needed. You can also contact your primary insurance plan's customer service line to ask about the status of coordination. If the problem persists, contact the North Carolina Department of Insurance at 1-800-546-5664.