This Medicare Mistake Can Devastate Unprepared Retirees

By Kailey Hagen, CFP – Feb 19, 2026 at 12:00PM ESTKey PointsOriginal Medicare covers many important retirement healthcare needs but has gaps.You'll likely need additional health insurance to keep your costs manageable.Always review all the health insurance plans available to you to find the best deal.We’re bullish on these 10 stocks ›This is one area where too much optimism could come back to bite you.It's no secret that you'll pay a lot for healthcare in retirement. You'll have monthly premiums and possibly more doctor visits than you did when you were younger. Even if you're a pretty healthy person, a single injury could result in tens of thousands of dollars in unexpected costs. Fortunately, you don't have to pay for your medical expenses entirely out of your own pocket because you'll be able to count on Medicare in retirement. However, misunderstanding the role Medicare plays in your retirement healthcare plan could lead to massive out-of-pocket costs. Here's what you need to know to ensure all your bases are covered. Image source: Getty Images. Medicare won't cover all your retirement healthcare costs Original Medicare consists of Part A, which covers home healthcare and nursing home stays, among other things, and Part B, which pays for most outpatient doctor visits. This covers a lot of ground but also leaves a lot of gaps. You'll need a Part D plan if you want coverage for prescription drugs. In addition, you'll need an additional health insurance policy to cover things like dental care, vision care, and hearing aids. Alternatively, you can opt for a Medicare Advantage plan. These plans, offered through private health insurers, cover everything in Original Medicare, plus some extras. What you don't want to do is trust your good health to keep your healthcare costs low in retirement. While everyone hopes they'll stay healthy as they age, this isn't a guarantee. If you develop a serious illness or an injury that leaves you unable to perform daily tasks, you could find yourself facing substantial out-of-pocket costs that derail your retirement withdrawal strategy. How to make sure you have the healthcare coverage you need in retirement The most important thing you can do to ensure you have the necessary health insurance coverage in retirement is to carefully evaluate all your options during your Initial Enrollment Period, which runs from three months before your 65th birthday to three months after it, and during the annual Open Enrollment Period that happens each fall. Review all available plans, and compare them on coverage, as well as cost. Think about what doctors, specialists, medications, and procedures you expect to need, and make sure your plan covers these. This might mean choosing a policy with a slightly higher premium. It's also worth taking steps to keep yourself healthy. Make sure you eat well, exercise regularly, and get plenty of rest. Also, take advantage of free healthcare screenings to catch problems early, before they become bigger and more costly.Read NextFeb 19, 2026 •By Maurie Backman3 Medicare Mistakes That Could Increase Your Healthcare Bills in RetirementFeb 19, 2026 •By Adam LevyHere's the Early Estimate for the 2027 Social Security Cost-of-Living Adjustment (COLA)Feb 19, 2026 •By Dana GeorgeWhat Should Retirees Know About Navigating Retirement During a Bear Market?Feb 19, 2026 •By Reuben Gregg BrewerDo Your Beneficiaries Know What to Do With Your Investment Portfolio? Here's Why It Matters.Feb 19, 2026 •By Kailey Hagen, CFPHere's How Much the Average 50-Year-Old Should Have Saved for RetirementFeb 19, 2026 •By Stefon Walters3 Things All Retirees Need to Know About the New Senior Tax DeductionAbout the AuthorKailey Hagen, CFP, is a contributing Motley Fool retirement analyst covering Social Security, Medicare, and retirement planning.

Before The Motley Fool, Kailey was a research analyst for Reviews.com focusing on credit and banking products. She is a Certified Financial Planner® and holds a bachelor’s degree in English from the University of Wisconsin-Madison.TMFKailey