Medicare does not cover spouses and children the way an employer family plan does. Every Medicare beneficiary enrolls as an individual, so you cannot add anyone else to your own coverage. A spouse or a disabled child can often qualify for their own Medicare, sometimes based on your work record, and when they don’t qualify there are other ways to keep them insured.
Medicare Is One Person at a Time
Employer health plans typically offer individual, employee-plus-spouse, and family tiers. Medicare has no equivalent. Each beneficiary enrolls separately, picks their own plan, and pays their own premiums. This applies across Original Medicare (Parts A and B), Medicare Advantage (Part C), and Part D drug coverage.1CMS. CY 2024 MA Enrollment and Disenrollment Guidance Two spouses who both have Medicare can end up in entirely different plans with different costs.
How a Spouse Can Get Their Own Medicare
Your spouse cannot ride on your enrollment, but they can often get their own coverage based on your work record. The most common route is premium-free Part A at age 65, which normally requires 40 work credits, roughly ten years of paying Medicare taxes. A spouse who hasn’t earned those credits on their own can still receive premium-free Part A at 65 through your record.2CMS. Original Medicare Part A and B Eligibility and Enrollment
This eligibility carries over to former and surviving spouses under specific conditions. A divorced spouse qualifies if the marriage lasted at least 10 years and the divorced spouse is currently unmarried. A widowed spouse qualifies if the marriage lasted at least nine months before the working spouse’s death and the survivor hasn’t remarried.2CMS. Original Medicare Part A and B Eligibility and Enrollment
Part B is separate. There is no free version of Part B for anyone. Every enrollee pays the standard monthly premium, which is $202.90 in 2026, with higher premiums for higher-income households.3CMS. 2026 Medicare Parts A and B Premiums and Deductibles
When a Spouse Has No Work Credits Anywhere
A spouse who doesn’t qualify for premium-free Part A through their own work, a current spouse, a former spouse, or a deceased spouse can still buy Part A. In 2026 the monthly premium is either $311 or $565, depending on how many work credits the person has.4Medicare. Costs Before assuming you need to purchase it, check whether any spousal record makes it free.
How a Child Can Qualify for Medicare
Children cannot be added to a parent’s Medicare. A child can, however, get their own Medicare through disability. The standard route is Social Security Disability Insurance: after 24 consecutive months of SSDI benefits, Medicare begins automatically in the 25th month.5Social Security Administration. Medicare Information
Two diagnoses skip the 24-month wait. A child with ALS receives Medicare the same month SSDI benefits begin.6Medicare. Which Path Is Right for Me A child with End-Stage Renal Disease can qualify at any age if a parent has the required Social Security work history. For ESRD, coverage usually starts on the first day of the fourth month of dialysis, though it can begin sooner with home dialysis training or a hospitalization for a kidney transplant.7Medicare. End-Stage Renal Disease
Disabled Adult Children
An adult child whose disability began before age 22 can receive Social Security benefits based on a parent’s record, even if they’ve never worked. This is the Disabled Adult Child benefit. The adult child must be at least 18, generally unmarried, and unable to engage in substantial gainful activity, which in 2026 means earning no more than $1,690 per month.8Social Security Administration. Substantial Gainful Activity The parent must be receiving Social Security retirement or disability benefits, or be deceased.
After 24 months of these benefits, the adult child becomes eligible for Medicare. For ALS, coverage begins immediately. Part A entitlement based on a child’s disability cannot start before the person turns 20, or 18 if the disability is ALS.2CMS. Original Medicare Part A and B Eligibility and Enrollment
When Your Spouse Still Has Employer Coverage
If one spouse is on Medicare and the other still works, which plan pays first depends on employer size. When the employer has 20 or more employees and the Medicare beneficiary is 65 or older, the employer plan pays first and Medicare pays second. If eligibility is based on disability, the threshold rises to 100 employees. Below those thresholds, Medicare is the primary payer.9CMS. MSP Employer Size Guidelines for GHP Arrangements
Watch the timing. If you’re covered under a working spouse’s large-employer plan, you may not need to rush into Part B. Once that employer coverage ends, you have an eight-month Special Enrollment Period to sign up for Part B without a late enrollment penalty.10Medicare. Working Past 65 Miss that window and you’ll wait until the next General Enrollment Period in January through March, with coverage starting in July and a penalty attached.
Coverage When a Spouse or Child Doesn’t Qualify for Medicare
A younger spouse often faces this gap when their partner retires at 65 but they’re still years from eligibility. A few options usually cover the situation.
ACA Marketplace Plans
A non-Medicare spouse can buy a marketplace plan and may receive premium tax credits based on household income, even though the other spouse is on Medicare. The person buying the marketplace plan must not themselves be eligible for Medicare, Medicaid, or affordable employer coverage.11Internal Revenue Service. Questions and Answers on the Premium Tax Credit
The Non-Medicare Spouse’s Employer Plan
If the spouse who isn’t on Medicare has coverage through their own job, that plan is often the simplest option, and many employer plans also cover children who are too young or otherwise ineligible for Medicare.
COBRA
When a job loss, reduction in hours, or divorce ends group coverage, COBRA lets the person temporarily continue it. Coverage typically runs 18 months after a job loss and up to 36 months after events like divorce or the covered employee’s death.12U.S. Department of Labor. FAQs on COBRA Continuation Health Coverage for Workers A disabled beneficiary may qualify for a 29-month extension.13CMS. COBRA Continuation Coverage Premiums run high because you pay what the employer used to subsidize plus an administrative fee.
Medicaid and CHIP for Children
Low-income families may qualify for Medicaid or the Children’s Health Insurance Program. Eligibility varies by state and is based on household income and family size. In many states, children in families earning up to 200% or more of the federal poverty level qualify for CHIP, making it one of the broadest safety nets available for kids.
One HSA Warning for Couples
Once you enroll in any part of Medicare, including Part A, you can no longer contribute to a Health Savings Account or accept employer HSA contributions.14Internal Revenue Service. HSA Limits on Contributions Your spouse’s Medicare enrollment, however, doesn’t affect your own eligibility. If you’re under 65, not on Medicare, and covered by a high-deductible health plan, you can still contribute. In 2026 the limit is $4,400 for self-only coverage and $8,750 for family coverage, plus a $1,000 catch-up at age 55 or older.