Can You Have Two Health Insurance Plans?

Updated on: May 10th, 2021

Reviewed by Frank Lalli

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Most Americans have just one health insurance plan — your primary insurance. However, there are situations in which you might find yourself with a second major medical plan — what’s called secondary insurance. 

You’re allowed to have secondary insurance if you choose. And in certain situations having two plans can help you pay for your healthcare

However, when you have two plans, you also have to pay two premiums and two deductibles — the amount you must pay for medical care out of pocket before your plan pays dollar onel. There are also other factors to consider when you have double coverage, including the potential hassle of juggling two plans, each with its own rules and deadlines.

What You Need to Know: 

Having two healthcare plans can be beneficial, but a downside is the need to pay two premiums and meet two separate deductibles.

When you have two plans, there are rules – known as coordination of benefits – about which plan pays first. These rules vary depending on where you live and the companies that cover you.

If your healthcare expenses are high, having double coverage could help pay your costs, depending on how much the two plans’ benefits complement one another.

When Would You Have Two Plans?

One of the most common reasons for having double coverage is when each person in a marriage or civil union has their own health insurance policy through work and each also uses the other’s policy. 

Because the Affordable Care Act (aka Obamacare) allows for children up to 26 to stay on their parents’ health plan, a young adult might also have two plans: the one they get through an employer and their family’s plan. Each parent may also have their own separate plan and a child who’s 26 or younger can be included on each of those plans. 

Finally, seniors who have Medicare coverage can also have a private health insurance plan through their employer or secondary supplemental (Medigap) insurance to cover costs Medicare doesn’t.

How Do Multiple Health Insurance Plans Work Together?

When you have two health insurance plans, there are certain rules about which of your plans will pay first when you see a doctor, visit the emergency room, get a prescription filled or have a procedure. These rules are known as coordination of benefits. The coordination occurs between the insurance companies, which work together to make sure neither pays too much.

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The rules differ depending on several factors, including which state you live in and which companies insure you. However, one of your health insurance plans will typically serve as the primary plan, and pay first, and the other will be your secondary plan, covering the balance.

When Does a Health Plan Become Your Primary Insurance?

If you have two plans, your primary insurance is your main insurance.1 Except for company retirees on Medicare, the health insurance you receive through your employer is typically considered your primary health insurance plan.

For someone 26 or under who has his or her own plan plus a parent’s plan, the child’s plan serves as the primary insurance. If you’re 26 or younger and covered by both your parents’ plans, the primary plan is the one held by the parent with the earliest birthday in the year, regardless of the age of either parent.

For those who have Medicare and a private company plan, Medicare is the primary plan if the employer has fewer than 100 employees, whereas the private insurer would be primary if the employer has more than 100 employees.2 However, when the worker retires with company insurance and gets Medicare, the company typically tells the worker to collect from Medicare first.

When Does a Health Plan Become Your Secondary Insurance?

Secondary insurance is the insurance that kicks in after your main insurance, or your primary health insurance. 

Which Health Insurance Pays First?

Your primary insurance pays first after you see your doctor, fill a prescription or have a procedure. This plan pays up to the coverage limits under the terms of the plan.3

After the primary health insurance pays, if you still owe money on a bill, the bill then goes to your other insurer. The secondary insurance will cover what it owes, up to the plan’s limits, hopefully up to 100% of the remaining amount.4

If there’s still money left to be paid at that point, you’ll receive a bill for the balance and will be responsible for paying the remaining amount.

Here’s an example of how having two insurance plans might work:

You have a heart procedure at your local hospital that costs $1,000. The hospital files a claim with your primary insurer, which is the policy you have with your employer. The primary insurance plan ends up paying $600. 

Next, your secondary insurer — in this example, your spouse’s insurance through his employer — will get the bill for the remaining amount. Your secondary insurer agrees to pay $300. 

In the end, you’re left with a bill of $100 to pay out-of-pocket.

What Do You Pay with Two Health Plans?

When you have two health plans, you have to pay two premiums, and you might also have two separate deductibles to meet each year. If that’s the case, you’ll have to pay both deductibles before the health plans start to chip in. 

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In addition to these costs, and depending on the specific health insurance plans you have, you may also have to pay two sets of out-of-pocket expenses, such as copayments or coinsurance.

What Are the Pros and Cons of Having Double Coverage?

One upside to having secondary insurance is that it can help you cover your medical expenses, which can be especially helpful if they are high. 

If the two plans are structured very differently, you may find your out-of-pocket costs are low because the plans complement each other. That’s because if one plan doesn’t cover a certain service but the other does, you end up with more coverage overall. You also have some peace of mind, since, if you lose one coverage, you still have the other plan to fall back on. 

However, having to pay two monthly premiums and meeting two annual deductibles can be a significant downside. You’ll also be dealing with two health insurance companies that may have very different policies, which can be confusing enough to lead to costly mistakes like not filing for reimbursement on time or correctly. 

If your plans are similar in their rates and coverage, you may not see much savings. Finally, if you have doctors you’re committed to, you’ll also need to make sure you can see them according to the rules of both plans.

Next Steps 

When deciding whether to have two health insurance plans, the first step is to understand the benefits of the two plans and how they might work together to pay your bills. Start by understanding which plan would be primary and which secondary. 

Once you truly grasp how they might work together, move on to comparing costs. Considering your health history, how much would you owe out of pocket with the two plans, including your double premiums and deductible? Would you save money with only one — or would you come out ahead with both?

If you don’t anticipate using many services in the coming year, having secondary insurance might not be worth the added expense and trouble of coordinating visits, providers and paperwork. 

However, if you see a busy year of healthcare services ahead, having two plans could be the smart way to keep your costs down while getting all the care you need.



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  1. U.S. Government Website for Medicare. “How Medicare works with other insurance” (accessed December 2020).

  2. U.S. Government Website for Medicare. “Your Guide to Who Pays First” (accessed December 2020).

  3. U.S. Government Website for Medicare. “How Medicare works with other insurance” (accessed December 2020).

  4. Fair Health Consumer. “Having more than one health plan” (accessed December 2020).