Medicare Part A
Hospital Insurance.
Most People Pay $0.
The Gaps Are Real.
Part A is the foundation of Original Medicare, and for most people, it comes at no premium cost. But the cost structure underneath the surface is one of the most misunderstood parts of the entire Medicare system.
The Thing Nobody Explains
Original Medicare, Parts A and B together, has no annual out-of-pocket maximum. There is no ceiling on what you can be required to pay in a given year.
Most people assume Medicare works like employer insurance. It does not. With employer coverage, you hit a deductible, you hit an out-of-pocket max, and the insurance pays 100% after that. Medicare Part A doesn’t work that way.
The Part A deductible is per benefit period, not per year. If you are hospitalized, discharged, and then hospitalized again 61 days later, a new benefit period has started, and a new $1,676 deductible applies.
Why This Matters
A single hospitalization followed by a skilled nursing facility stay can expose you to thousands in out-of-pocket costs that most people never anticipated. This is precisely the gap that Medicare Supplement (Medigap) plans exist to fill.
Ben Sullivan built Insurance Innovators after watching this exact situation happen to his own family. The coverage that could have protected them existed. Nobody told them to look for it.
What Part A Covers
Part A is hospital insurance in the broadest sense, covering inpatient care across several settings.
Inpatient Hospital Care
Semi-private room, meals, nursing care, and general hospital services during an inpatient admission. Covered after the Part A deductible is met.
Skilled Nursing Facility Care
Short-term skilled nursing care following a qualifying hospital stay of at least 3 days. Days 1–20 are fully covered. Days 21–100 require a daily coinsurance payment.
Home Health Care
Part-time skilled nursing, physical therapy, or speech-language therapy when medically necessary and you are homebound. Must be ordered by a physician.
Hospice Care
Comfort care for terminal illness when curative treatment is no longer the goal. Includes nursing, pain management, and counselor support.
What Part A Does Not Cover
Physician and outpatient services (that's Part B)
Prescription drugs in most settings (that's Part D)
Long-term custodial care in a nursing home
Dental, vision, or hearing care
Private-duty nursing
Most care received outside the United States
The Cost Structure
What you actually pay when you use Part A, broken down clearly.
Part A Premium
$0 for most peopleIf you or your spouse worked and paid Medicare taxes for at least 40 quarters (10 years), you pay no premium. Those with 30–39 qualifying quarters pay $285/month in 2025. Fewer than 30 quarters: $518/month.
Per-Benefit-Period Deductible
$1,676 in 2025This is not an annual deductible. It resets each benefit period, which begins when you are admitted and ends when you have been out of the hospital for 60 consecutive days. Multiple hospitalizations in one year can mean multiple deductibles.
Hospital Coinsurance (Days 61–90)
$419 per day in 2025Once a single hospital stay exceeds 60 days, you pay $419/day for days 61–90 of that benefit period.
Lifetime Reserve Days
$838 per day in 2025Each beneficiary has 60 lifetime reserve days for stays beyond 90 days in a single benefit period. Once used, they are gone permanently.
Skilled Nursing Coinsurance (Days 21–100)
$209.50 per day in 2025Days 1–20 in a qualifying SNF stay are fully covered. Starting day 21, you pay $209.50/day until day 100. After day 100, Medicare pays nothing.
When and How You Enroll
Automatic enrollment: If you are already receiving Social Security or Railroad Retirement Board benefits when you turn 65, you are enrolled in Part A (and Part B) automatically. Your Medicare card arrives in the mail about three months before your 65th birthday.
Manual enrollment: If you are not yet collecting Social Security at 65, you must enroll during your Initial Enrollment Period, the 7-month window that begins 3 months before the month you turn 65 and ends 3 months after.
Working past 65: If you have active employer coverage through your own job (or a spouse’s) at a company with 20+ employees, you may delay Part A without penalty. Your employer plan is primary; Medicare is secondary.
Late enrollment for those who pay a premium: If you don’t qualify for premium-free Part A and don’t enroll during your initial window, your monthly premium may increase by 10% for twice the number of years you delayed.
Know What You’re Exposed To
Part A is the foundation, but the gaps it leaves behind are where people get hurt financially. A quick conversation with Ben’s team clarifies exactly what you’re protected against and what you’re not.