The Fine Print They Hand You at 65

The card arrives in the mail a few months before your 65th birthday. You’ve paid into the system for decades. You’ve been told, in a thousand different ways, that Medicare will be there when you need it. And it will be. It just won’t be there for everything you need, and nobody explains the difference clearly until you’re standing in a dentist’s office, a hearing clinic, or a rehab facility learning what “not covered” actually means when the bill is yours.

Medicare is the most consequential health insurance program in American history. It covers roughly 67 million people, pays for hospitalizations, physician visits, preventive screenings, and (since 2006) prescription drugs. For what it covers, it works. The problem is what it doesn’t cover: the services that aging bodies need most routinely, most expensively, and most urgently. Those gaps are not oversights. They are structural features of a program designed in 1965, when the average American died at 70 and the concept of managing five chronic conditions simultaneously for 20 years was not yet a demographic reality.

Understanding where Medicare stops is not an academic exercise. It is the difference between a manageable retirement and a financial crisis.

What the Card Actually Buys

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Medicare has four parts, each covering different services with different costs. Part A covers inpatient hospital stays, limited skilled nursing facility care (up to 100 days after a qualifying hospital stay, not ongoing), hospice, and some home health services. Most people pay no premium for Part A because they or a spouse paid Medicare taxes for at least 10 years. The hospital deductible in 2026 is $1,736 per benefit period, which means a second hospitalization in the same year can trigger a second deductible.

Part B covers physician visits, outpatient care, preventive services, diagnostic tests, durable medical equipment, and some therapies. The standard monthly premium in 2026 is $202.90, with higher earners paying substantially more through income-related adjustments. The annual deductible is $283, after which beneficiaries pay 20% coinsurance on most services with no annual cap on out-of-pocket spending. That last detail is the one that catches people: traditional Medicare has no maximum out-of-pocket limit. A serious illness can generate unlimited cost-sharing obligations.

Part D covers prescription drugs through private plans. The Inflation Reduction Act brought the most significant change in Part D’s history: a $2,000 annual out-of-pocket cap on drug costs beginning in 2025 (rising to $2,100 in 2026), a $35 monthly cap on insulin, and the start of Medicare drug price negotiations. These are genuine, material improvements. And the landscape continues to shift: in late 2025, CMS proposed two mandatory international reference pricing models (GLOBE for Part B drugs, GUARD for Part D drugs) that could reshape prescription costs further if finalized. We will examine all of this in detail in Installment 3.

Part C, Medicare Advantage, is the alternative delivery model: private insurers offering all-in-one plans that bundle Parts A, B, and usually D, often with supplemental benefits. Roughly 34 million beneficiaries are now enrolled in Advantage plans. We’ll return to Advantage shortly, because its role in the coverage gap story is complicated, and getting more complicated by the month.

The Three Gaps That Change Everything

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Medicare was built around hospital and physician care. It was not built around the daily realities of aging: teeth that deteriorate, hearing that fades, vision that dims, and bodies that need help with the basic activities of living. These exclusions, baked into the original 1965 statute and never corrected, create the most consequential coverage gaps in American healthcare.

Dental care. Medicare does not cover routine dental services. No cleanings, no fillings, no crowns, no root canals, no dentures. The only dental exceptions involve procedures directly tied to a covered medical treatment (jaw reconstruction after an accident, dental clearance before an organ transplant). For everything else, you pay the full cost yourself.

The consequences are not cosmetic. According to data from the American Dental Association, 56% of Americans 65 and older have no dental benefits of any kind. CDC survey data from 2022 show that only about 64% of seniors visited a dentist in the prior year, with the rate dropping sharply by income. Among low-income seniors, the rate falls well below 50%. Nearly one in five adults over 65 has untreated tooth decay.

Untreated dental disease leads to infections, chronic pain, difficulty eating, malnutrition, and documented cardiovascular risk. A crown in 2026 runs roughly $1,500. A full set of dentures can exceed $5,000. For a senior on a fixed income, these are not routine expenses. They are financial emergencies masquerading as dental appointments.

Hearing. Medicare does not cover hearing aids or routine hearing exams. It covers a diagnostic audiology visit if hearing loss has persisted for 12 months or more, and it covers cochlear implants as prosthetic devices. But the hearing aids that most seniors with age-related hearing loss actually need are excluded entirely.

Prescription-grade hearing aids cost between $2,000 and $6,000 per pair. Over-the-counter alternatives, available since 2022, cost less but serve only those with mild to moderate loss. For the millions of seniors with more significant impairment, the choice is between spending thousands out of pocket or going without.

The health consequences of going without are not trivial. Research has consistently linked untreated hearing loss to accelerated cognitive decline, social isolation, depression, and increased fall risk. A Lancet Commission report identified hearing loss as the single largest modifiable risk factor for dementia. The gap between what Medicare excludes and what the evidence shows matters is as wide here as anywhere in American healthcare.

Vision. Medicare covers medical eye conditions (glaucoma treatment, cataract surgery, macular degeneration management) but not routine eye exams, eyeglasses, or contact lenses. After cataract surgery, Medicare will pay for one pair of standard corrective lenses, but not the progressive lenses or premium options most patients actually need. Routine vision care, the annual exam and updated prescription that keeps a 72-year-old from falling down stairs she can’t see clearly, is not covered.

A pair of progressive lenses runs $400 to $600 or more. Seniors wearing outdated prescriptions because they can’t afford new ones face increased fall risk, driving impairment, and reduced independence. The exclusion is particularly punishing for diabetics, who need regular eye exams to catch retinopathy early, and for whom the line between “routine” and “medical” vision care is clinically meaningless.

These three gaps are collectively known as the DVH (dental, vision, hearing) gap. Multiple bills have been introduced in Congress to add these benefits to Medicare, including the Medicare Dental, Vision, and Hearing Benefit Act (H.R. 2045) and the Medicare Dental, Hearing, and Vision Expansion Act (S. 939) in the current session. None have passed. The gap persists.

The Long-Term Care Exclusion

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If the DVH gap is the coverage problem most seniors encounter first, the long-term care exclusion is the one that can destroy a family’s finances entirely.

Medicare does not cover custodial care: ongoing help with bathing, dressing, eating, toileting, transferring, and medication management. It covers short-term skilled nursing after a qualifying hospital stay (and only for up to 100 days, with significant copays starting at day 21). It covers some home health services if you are homebound and need skilled care. But the sustained, daily, hands-on help that most people with advanced chronic conditions or dementia eventually require is simply not a Medicare benefit.

As Installment 1 documented, roughly 70% of people turning 65 will need some form of long-term care. The median cost of a home health aide is over $6,000 a month. A semi-private nursing home room exceeds $8,700 monthly. These costs can continue for years. Medicare pays for almost none of it.

Most families discover this gap at the worst possible moment: when a parent has a stroke, a fall, or a dementia diagnosis that makes independent living unsafe. The assumption that “Medicare will cover the nursing home” is perhaps the most expensive misconception in American retirement planning. Installment 4 will trace what happens next: the Medicaid spend-down, the process by which families exhaust nearly everything they have in order to qualify for the only public program that does cover long-term care.

The Supplemental Insurance Maze

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Faced with these gaps, beneficiaries have two main options for additional coverage, and neither fully solves the problem.

Medigap (Medicare Supplement) plans, sold by private insurers, help cover cost-sharing for services Medicare already covers: deductibles, copays, and coinsurance. A good Medigap plan can protect against the unlimited out-of-pocket exposure of traditional Medicare. What Medigap does not cover is dental, vision, hearing, or long-term care. It fills in the cracks of what Medicare pays for. It does not add what Medicare leaves out.

Medicare Advantage plans take a different approach. Because they bundle everything into a single plan, many Advantage plans offer supplemental benefits that traditional Medicare and Medigap lack: limited dental coverage, basic vision exams, hearing aid allowances, fitness programs, even meal delivery and transportation. Nearly 90% of Advantage plans now offer some form of DVH benefit. This is a genuine advantage for healthy beneficiaries managing routine needs.

The trade-offs are real, though. Advantage plans operate through provider networks, which means your choice of doctors and hospitals is restricted. They require prior authorization for many services, and Medicare Advantage insurers denied roughly 7.7% of prior authorization requests in 2024, with the majority of appealed denials being overturned. The supplemental dental benefits often come with annual caps ($1,000 to $3,000) that a single major procedure can exhaust. And when a beneficiary’s health declines significantly, the network restrictions and authorization requirements of an Advantage plan can become barriers rather than conveniences.

Those trade-offs may be about to get sharper. In January 2026, CMS proposed a 0.09% payment increase to Medicare Advantage plans for 2027, effectively flat funding in a year when medical costs and utilization are rising. The industry expected 4% to 6%. Health insurer stocks dropped more than 14% in a single afternoon. The Better Medicare Alliance warned that flat funding “does not keep pace with rising medical costs” and could force plans to cut supplemental benefits and raise premiums. If the rate holds (the final announcement is due April 2026), the DVH extras that make Advantage attractive may be the first thing insurers trim. The benefits that exist because of plan generosity can disappear for the same reason.

Meanwhile, the traditional Medicare side of the equation is shifting too. In January 2026, CMS launched the WISeR (Wasteful and Inappropriate Service Reduction) model, a six-year pilot introducing prior authorization into traditional Medicare for the first time. The pilot covers six states and a narrow list of services (skin substitutes, nerve stimulators, certain pain management procedures), and KFF’s analysis suggests the first-year impact will be modest. But the direction matters: if the model expands, as CMS has indicated it may, the longstanding distinction between traditional Medicare (no prior auth) and Advantage (extensive prior auth) begins to blur. The choice between the two paths was already complicated. It is becoming more so.

Switching from Medicare Advantage back to traditional Medicare is possible but risky. In most states, insurers can deny Medigap coverage or charge higher premiums to applicants with preexisting conditions if they’re past the initial enrollment window. A 75-year-old with diabetes and heart disease who wants to leave Advantage may find Medigap unaffordable or unavailable. The door that looked open at 65 can close.

The complexity itself is a coverage gap. A 2023 KFF survey found that more than a third of Medicare beneficiaries had delayed or gone without medical, dental, vision, hearing, or prescription drug services in the prior year because of cost. The people with the fewest resources and the least access to informed guidance are the most vulnerable to enrollment choices they don’t fully understand.

Where Technology Meets the Gaps

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Telehealth represents the most tangible intersection of technology and Medicare coverage. Medicare expanded telehealth access substantially during COVID, allowing beneficiaries to see physicians, mental health providers, and some specialists from home. Some of those expansions have been made permanent; others remain subject to annual legislative extensions. For rural seniors who live hours from a specialist, and for homebound beneficiaries managing chronic conditions, telehealth is a genuine improvement in access.

Remote patient monitoring, using wearable devices to track heart rhythms, blood glucose, or activity patterns, is also increasingly covered under certain Medicare provisions. AI-assisted diagnostic tools are beginning to enter clinical use, particularly in retinal screening for diabetic eye disease and in cardiac rhythm analysis.

On this front, there is a concrete new development. In late 2025, CMS announced the ACCESS (Advancing Chronic Care with Effective, Scalable Solutions) model, a 10-year voluntary program launching in July 2026 that creates outcome-aligned payments for technology-supported chronic disease management in traditional Medicare. It covers hypertension, diabetes, chronic kidney disease, cardiovascular disease, chronic pain, and depression, exactly the conditions that accumulate most expensively in aging. The FDA created a companion pathway (TEMPO) to give digital health device companies a faster route to market. This is the first time Medicare has built a dedicated payment mechanism for the kind of tech-enabled chronic care management that pilot programs have been testing for years.

The honest caveat: ACCESS is voluntary, limited to organizations that apply and qualify, and covers only traditional Medicare beneficiaries. The seniors who most need better chronic disease management may not be seeing providers who participate. And the fundamental coverage gaps remain untouched. A remote glucose monitor does not clean your teeth, fit your hearing aids, or help you get dressed in the morning. The gaps in Medicare are not information gaps or access gaps that technology can bridge. They are benefit gaps, written into the law, that require legislative action to fix. Technology can make the covered portions of Medicare smarter. It cannot add what the law leaves out.

What You Can Do at Your Kitchen Table

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If you are approaching 65 or already on Medicare, the most important thing you can do is understand exactly what your coverage includes and what it leaves out. Start with a free counseling session through your State Health Insurance Assistance Program (SHIP). Every state has one. SHIP counselors are trained, unbiased, and not selling anything. They can walk you through the comparison between traditional Medicare with Medigap and Medicare Advantage, specific to your health conditions, your medications, and your geography.

Review your coverage annually during Open Enrollment (October 15 through December 7). Plans change every year: networks shift, formularies change, and supplemental benefits appear or disappear. In a year when Medicare Advantage plans may be absorbing significant funding pressure, this review matters more than usual. What worked last year may not work next year.

Budget explicitly for what Medicare doesn’t cover. If you have no dental coverage, you need a savings line for dental care. If you’re managing hearing loss, research the OTC hearing aid market and whether your needs exceed what those devices can address. If you wear glasses, price out standalone vision plans or Medicare Advantage options with vision benefits.

And talk to your family about long-term care before you need it, not after. The next installments in this series, covering prescription drug costs and the Medicaid spend-down, will provide the specifics. But the conversation needs to start now, at the table, with clear eyes about what the Medicare card in your wallet actually promises.

It promises a great deal. Just not everything you’ll need.