Medicare as Primary Coverage: What It Covers, What It Does Not, and Where the Gaps Create Product Opportunity

Medicare provides the 65-plus population with coverage that rivals or exceeds most private insurance for acute medical care. Hospital coverage is essentially comprehensive. Physician services are covered at 80 percent after a modest deductible. Preventive care is strong. The program works as designed for its original purpose of protecting older Americans from the financial catastrophe of serious illness. The gaps that create product opportunity are specific, quantifiable, and largely unchanged since Medicare’s 1965 enactment: routine dental, routine vision, hearing aids, international care, and cost-sharing exposure in traditional Medicare. Each gap is a product component waiting to be assembled.

What Medicare Covers

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Part A covers inpatient hospital care, skilled nursing facility care, hospice care, and some home health services. Hospital coverage includes semiprivate rooms, meals, general nursing, drugs administered during the stay, and other hospital services and supplies. For 2025, the inpatient hospital deductible is $1,676 per benefit period, up from $1,632 in 2024. Beneficiaries pay coinsurance of $419 per day for hospital days 61 through 90 and $838 per day for lifetime reserve days. Skilled nursing facility coverage extends up to 100 days per benefit period, with full coverage for days 1 through 20 and daily coinsurance of $209.50 for days 21 through 100 in 2025. Approximately 99 percent of Medicare beneficiaries qualify for premium-free Part A coverage through their own or a spouse’s work history of at least 40 quarters paying Medicare taxes.

Part B covers physician services, outpatient care, preventive services, durable medical equipment, laboratory tests, and mental health services. The annual wellness visit, cancer screenings, vaccinations, and other preventive services are covered without cost-sharing for beneficiaries enrolled in traditional Medicare. The standard monthly Part B premium is $185 for 2025, increasing to $202.90 for 2026. Beneficiaries with modified adjusted gross income exceeding $106,000 for individuals or $212,000 for married couples filing jointly pay Income-Related Monthly Adjustment Amounts ranging from $74 to $443.90 in additional monthly premiums. About 8 percent of Part B enrollees pay these surcharges according to the Medicare Trustees Report. After the annual deductible of $257 in 2025 and $283 in 2026, Part B covers 80 percent of Medicare-approved charges. Traditional Medicare has no out-of-pocket maximum, distinguishing it from nearly all employer-sponsored insurance and creating cost-sharing exposure that Medigap policies address.

Part D covers outpatient prescription drugs through plans offered by private insurers following Medicare-approved formularies. The Inflation Reduction Act reshaped Part D benefits beginning in 2025, eliminating the coverage gap known as the donut hole and establishing a $2,000 annual out-of-pocket spending cap. For 2026, this cap rises to $2,100, indexed annually. In 2024, the out-of-pocket threshold was $8,000, meaning the IRA reduced beneficiary exposure by roughly 75 percent for those with high drug costs. The benefit now operates in three phases: deductible (up to $590 in 2025, $615 in 2026), initial coverage at 25 percent coinsurance for beneficiaries with 65 percent paid by plans and 10 percent by manufacturers for brand drugs, and catastrophic coverage where beneficiaries pay nothing and costs are split between plans, manufacturers, and Medicare.

The Part D restructuring significantly improves coverage for beneficiaries with high drug costs but does not fundamentally alter the specialty drug access challenge facing the 65-plus population. Formulary placement determines whether a medication receives favorable cost-sharing treatment. Prior authorization and step therapy requirements apply regardless of out-of-pocket caps. A beneficiary whose oncologist prescribes a medication that Part D does not cover receives no benefit from the out-of-pocket cap because the medication falls outside the covered drug list entirely.

What Medicare Does Not Cover

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Routine dental care receives zero Medicare coverage. The program excludes cleanings, fillings, crowns, implants, dentures, extractions, and root canals. Medicare covers dental procedures when they are integral to a covered medical procedure, such as jaw reconstruction following cancer surgery or dental evaluation before a heart valve replacement. The distinction between medical necessity and routine maintenance creates confusion, but the operational reality is clear: the twice-annual cleaning, the cavity filling, and the crown replacement are personal expenses. For a 65-plus population with dental needs increasing due to age, medication side effects, and chronic disease impact on oral health, this represents Medicare’s largest coverage gap.

The financial exposure is substantial. A single dental implant can cost $3,000 to $5,000. A full mouth restoration can exceed $20,000. A Health Affairs analysis of Medicare Current Beneficiary Survey data found that even among Medicare Advantage enrollees with dental benefits, out-of-pocket expenses comprised 76 percent of total dental spending. Coverage exists but does not prevent cost exposure because dental insurance operates with annual maximums, typically $1,000 to $2,000, that a single major procedure exhausts.

Routine vision care beyond the medical eye exam falls outside Medicare. Part B covers the medical eye examination for glaucoma, diabetic retinopathy, and other conditions affecting the eye’s health. Part B does not cover the refractive examination determining corrective lens prescriptions, eyeglasses, or contact lenses. The distinction between medical and refractive vision care creates confusion similar to dental coverage. An ophthalmologist examining for macular degeneration performs a covered service. The same ophthalmologist or optometrist determining a glasses prescription performs an uncovered service unless the exam occurs after cataract surgery, one of Medicare’s narrow exceptions.

Hearing coverage remains limited. Medicare Part B covers diagnostic hearing exams ordered by a physician to determine whether medical treatment is needed. Part B covers cochlear implants for qualifying beneficiaries. Part B does not cover routine hearing tests, hearing aids, or the fitting and adjustment services hearing aids require. Following FDA rulemaking in 2022, over-the-counter hearing aids became available without prescription, reducing access barriers but not cost barriers. Industry data indicates hearing aids average between $2,000 and $6,000 per pair. Research suggests approximately three-quarters of adults over 70 could benefit from hearing aids. The gap between clinical need and insurance coverage drives hearing aid adoption rates far below clinical recommendations, with consequences for cognitive health, social engagement, and quality of life that research continues to document.

International care receives virtually no Medicare coverage. Healthcare services received outside the United States fall outside the program with narrow exceptions: emergency care in Canada when traveling by the most direct route between Alaska and another U.S. state, emergency care in Canada or Mexico when the beneficiary lives closer to a Canadian or Mexican hospital than to a U.S. hospital, and emergency care aboard a ship within U.S. territorial waters. These exceptions are narrow enough to be practically irrelevant for most beneficiaries. The 65-plus entrepreneur who spends three months in Portugal, winters in Mexico, maintains a residence in a border state, or travels internationally for business has no Medicare coverage abroad. Evacuation coverage, routine care abroad, and coordination with international providers all fall outside the program. Supplemental travel medical insurance exists but is not coordinated with Medicare benefits.

Long-term care and custodial services remain entirely outside Medicare’s scope. Skilled nursing facility coverage requires prior hospitalization and addresses rehabilitation, not custodial care. Nursing home care for activities of daily living, assisted living, memory care facilities, and in-home custodial assistance are separate risk categories requiring separate insurance products or private pay. This gap merits mention because it surprises many beneficiaries, but addressing it falls outside the scope of a Medicare wrap product and involves insurance products structured entirely differently from medical coverage.

The Cost-Sharing Exposure

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Traditional Medicare without supplemental coverage creates annual cost exposure that most employer-sponsored insurance would not permit. The absence of an out-of-pocket maximum in traditional Medicare means theoretically unlimited 20 percent coinsurance on Part B services. The Part A hospital deductible resets with each benefit period, and benefit periods can occur multiple times per year if readmissions occur after 60 consecutive days without inpatient care.

For a 65-plus entrepreneur with active healthcare utilization, including orthopedic procedures, specialist visits, imaging, and specialty medications, annual out-of-pocket exposure can reach $10,000 to $20,000 or more depending on service utilization, drug costs, and whether any hospitalization occurs. The combination of Part A cost-sharing, Part B 20 percent coinsurance without a maximum, and Part D cost-sharing before reaching the catastrophic phase creates financial unpredictability that most other insurance structures eliminate.

Medigap policies address Part A and Part B cost-sharing through standardized supplemental coverage. Plan designs range from Plan A, covering basic Part A and Part B coinsurance, to Plan G, covering nearly all cost-sharing except the Part B deductible. The most comprehensive Medigap plans produce near-zero cost-sharing at the point of care for Medicare-covered services. Medigap premiums vary by plan design, issuer, geographic location, and rating methodology, with attained-age rating, issue-age rating, and community rating producing different premium trajectories over time.

Medicare Advantage represents an alternative to traditional Medicare plus Medigap. Medicare Advantage plans include an out-of-pocket maximum, required by CMS regulations, and may include dental, vision, and hearing benefits not available in traditional Medicare. The tradeoff is network restriction. Medicare Advantage plans operating as HMOs or PPOs limit provider access to network physicians and facilities. The 65-plus entrepreneur who maintains multiple residences, travels extensively for business, or values specific physician relationships may find Medicare Advantage network restrictions unacceptable. Approximately 52 percent of Medicare beneficiaries were enrolled in Medicare Advantage plans as of 2024, but the entrepreneurial population’s characteristics may favor traditional Medicare plus Medigap.

The Product Opportunity Map

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Each coverage gap maps to a product component that could be assembled into a comprehensive offering for the 65-plus entrepreneurial population.

Dental coverage accessed through a group mechanism rather than individual purchase creates potential advantages. Group dental plans may offer broader provider networks than individual dental insurance. Employer-funded dental benefits create business expense deductibility. For entrepreneurs in border states or willing to travel, cross-border dental care produces substantial savings on major procedures without sacrificing quality for procedures where U.S. and international training standards align.

Vision coverage including routine refractive exams, eyewear hardware, and integration with clinical screening produces a benefit package addressing both refractive needs and early disease detection. The vision screening identifying diabetic retinopathy, glaucoma, and macular degeneration produces clinical value exceeding the direct coverage cost through earlier intervention.

Hearing benefits including annual audiological exams, hearing aids at reduced cost, and fitting services address the gap between clinical recommendation and current adoption. The cognitive health implications of untreated hearing loss make this a high-value intervention even where direct medical costs are modest.

International care coverage for the snowbird and digital nomad population addresses the geographic mobility that Medicare’s domestic-only structure cannot accommodate. Emergency care abroad, routine care for chronic conditions managed internationally, and medical evacuation coverage address the scenarios Medicare explicitly excludes. The cross-border care infrastructure some organizations have built for under-65 populations could extend to Medicare beneficiaries with appropriate coordination.

Specialty drug supplementation addresses medications inadequately covered by Part D formularies. International pharmacy purchasing for maintenance medications with established therapeutic equivalence produces substantial savings on ongoing drug costs. The $2,000 Part D out-of-pocket cap reduces but does not eliminate the value of supplemental drug strategies for beneficiaries whose medications fall outside favorable formulary tiers.

A cost-sharing wrap through Medigap or group Medicare Supplement coverage fills the Part A and Part B cost-sharing gaps. Group Medicare Supplement access through employer or association mechanisms may produce premium advantages and guaranteed issue not available in individual Medigap purchasing outside the initial enrollment period.

Concierge navigation addresses the administrative complexity of coordinating Medicare, Medigap or Medicare Advantage, Part D, dental, vision, hearing, international care, and HRA reimbursement through multiple vendor relationships. A single point of contact managing the complete coverage picture produces time value exceeding its cost for the entrepreneur whose time has significant alternative uses.

The Design Imperative

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Medicare provides a strong foundation for the 65-plus population. The gaps around it are not accidental or the result of system failure. They reflect the program’s 1965 origins, when dental insurance was uncommon for any population, hearing aids were primitive devices rarely covered by insurance, and international travel was a luxury rather than a lifestyle. The program has evolved since then, most significantly through the Part D prescription drug benefit added in 2003, but the core coverage gaps persist because expanding Medicare’s scope requires Congressional action while supplemental products can be built through private market innovation.

The product opportunity is not to fix Medicare but to wrap around it. The 65-plus entrepreneur has Medicare as a foundation. They have business structures enabling tax-advantaged health expense treatment. They have income levels supporting premium products with service components. They lack the integrated offering that combines coverage completion with tax optimization and administrative simplification. Building that offering requires capabilities that do not naturally coexist in current market participants: Medicare expertise, group benefits expertise, tax structure understanding, and concierge service delivery. The market failure is not that no one could build this product. The market failure is that the organizations with Medicare expertise lack benefits architecture capabilities while the organizations with benefits architecture capabilities lack Medicare expertise. The gap between these populations creates the opportunity for a new category of offering.