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ORIGINAL MEDICARE COSTS

Original Medicare Has Cost-Sharing: What to Understand Before Choosing a Path

Original Medicare provides important hospital and medical coverage, but coverage is not the same as paying every cost. Before choosing an option, understand the cost-sharing and coverage rules that sit under Part A and Part B.

Published February 10, 2026 · Updated August 31, 2026 · 6 min read

Part A has a deductible and benefit-period rules

Part A helps pay for inpatient hospital care, skilled nursing facility care, hospice and certain home health care. Hospital cost-sharing is based on benefit periods, not simply a calendar-year deductible. The amounts and daily coinsurance can change each year.

A skilled nursing facility stay has its own coverage conditions. Under Original Medicare, a qualifying inpatient hospital stay of at least three consecutive days is generally required, and observation time is outpatient time that does not count toward that requirement. The individual must also meet the other skilled-care and facility requirements.

Part B generally leaves 20% coinsurance

Part B helps cover doctors’ services, outpatient care, tests, durable medical equipment and preventive services. After the Part B deductible, a person generally pays 20% of the Medicare-approved amount for Part B-covered services. Original Medicare does not have a yearly out-of-pocket maximum unless another coverage layer applies.

That does not mean Medicare is inadequate. It means the financial structure should be considered before care is needed. How much protection someone wants around that structure is an individual decision.

The two Medicare paths handle cost-sharing differently

A Medicare Advantage plan has a plan-specific yearly limit on out-of-pocket spending for covered Medicare services, with its own premiums, deductibles, copays, networks and rules. Original Medicare can be paired with a Medicare Supplement policy that helps pay certain Original Medicare-approved out-of-pocket costs, depending on the policy. Neither path is automatically right for every person.

Medicare Supplement Insurance does not turn non-Medicare-covered services into Medicare benefits. It is designed around a person’s share of covered Original Medicare costs. That distinction matters when setting expectations.

Put supplemental conversations after the Medicare foundation

Once the Medicare path is selected, we can review whether separate coverage conversations fit the person’s needs and eligibility. Examples can include dental, vision, hearing or protection designed to help with financial disruption from a qualifying serious diagnosis or hospital event. They are not replacements for Medicare or major medical coverage.

The right time to learn about an available option is before a diagnosis or event, not during an urgent situation. We explain what a policy does, what it does not do, eligibility and cost so the client can decide.

A PERSONAL REVIEW

Get the decision in the right order.

We can help you organize the questions, review the choices that apply to you, and explain how enrollment works. There is no cost for our assistance with enrollment; we are paid by the carrier when a policy is issued.

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Official resources

Medicare rules and plan details can change. These sources are a useful place to confirm the current rule for your situation.

Original Medicare cost questions

A few important distinctions behind the word “coverage.”

Does Original Medicare have an annual out-of-pocket maximum?

No. Medicare.gov says Original Medicare has no yearly limit on out-of-pocket costs unless supplemental coverage, such as Medigap, Medicaid, employer, retiree or union coverage, applies.

Does Medicare observation count toward the three-day skilled nursing requirement?

No. Observation services are outpatient services and generally do not count toward the qualifying three-day inpatient hospital stay required for Original Medicare skilled nursing facility coverage.

Does Medigap cover everything Medicare does not cover?

No. Medigap helps with certain cost-sharing for Original Medicare-covered services. It generally does not cover long-term care, routine dental, vision, hearing aids, private-duty nursing or prescription drugs.

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