Adding a Baby to Health Insurance: Deadlines and Steps

Adding your baby to your health insurance is one of the most important, and easiest to miss, tasks of the first month. Miss the deadline and you could face a coverage gap until the next open enrollment. Here’s how to get it right.

The deadline

The birth of a child is a qualifying life event, which opens a special enrollment period (HealthCare.gov). The window is short:

Employer plans: often 30 days from the birth; some allow 60.
Marketplace plans: generally 60 days (HealthCare.gov).

Find your exact deadline before the due date and put it in your calendar. Coverage for a newborn added within the window typically goes back to the date of birth.

Before the baby arrives

Ask HR (or your plan) three questions: What’s the deadline? What documents do you need? Does coverage date back to the birth?
Compare plans if you both have employer coverage. Look at the premium for adding a child, the deductible, the out-of-pocket maximum, and whether your chosen pediatrician is in-network. Run the numbers in the cost calculator.
Check the hospital and pediatrician networks. Out-of-network newborn care is a common source of surprise bills.

After the birth

Enroll the baby through your HR portal or Marketplace account as soon as you can. You don’t usually have to wait for the Social Security number to start; ask HR what they accept in the meantime.
Provide documents like the birth certificate or hospital birth record when available.
Confirm enrollment in writing, and check that the baby shows up on your plan.
Review bills from the hospital and pediatrician. Questions? Call the insurer before you pay.

If money is tight

Children may qualify for Medicaid or CHIP, which offer low-cost or free coverage for kids in families with incomes up to certain limits that vary by state (InsureKidsNow.gov). Many families earn too much for adult Medicaid but still qualify for CHIP for their children. It’s worth checking.

Expect the birth to cost something

Even with good insurance, birth usually means hitting part or all of your deductible. A KFF analysis of large-employer plans found an average of about $2,700 out of pocket for pregnancy, childbirth and postpartum care. If you’ll hit your out-of-pocket maximum, that’s your real number. Budget for it, and ask the hospital about payment plans if needed.

Frequently asked questions

How long do I have to add my baby to insurance?

Birth is a qualifying life event. Many employer plans require you to add the baby within 30 days of birth (some allow 60). Marketplace plans generally allow 60 days. Check your plan's deadline before the birth.

Is a newborn automatically covered under the mother's insurance?

Many plans cover the newborn's care for a short period after birth under the parent's policy, but you usually still need to formally enroll the baby to keep coverage. Don't assume; call your plan or HR.

Whose plan should the baby go on?

Compare the total cost of adding a child to each parent's plan: premiums, deductibles, out-of-pocket maximums, and which pediatricians are in-network. Sometimes the cheaper premium costs more overall.