Medicare Part A Explained: What It Covers and Costs
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Written by Aaron Sims
Updated on September 2, 2025
3 min read
What Is Medicare Part A?
Medicare Part A is one of the two parts of Original Medicare (alongside Part B). It’s often called hospital insurance because it primarily helps cover inpatient care and related services. For most people, Part A is premium-free, but there are still costs you need to know about.
What Does Part A Cover?
Part A provides coverage for a wide range of inpatient and facility-based services, including:
- Hospital stays: Semi-private rooms, meals, nursing care, and medications as part of inpatient treatment.
- Skilled nursing facility care: Limited coverage for recovery after a hospital stay (not long-term custodial care).
- Home health care: Part-time skilled nursing care and therapy services at home, if medically necessary.
- Hospice care: End-of-life care, pain management, and support for families.
💡 Tip: While Part A covers hospital services, it does not cover outpatient doctor visits, lab tests, or preventive care. Those fall under Part B.
What Does Part A Cost?
Most people don’t pay a monthly premium for Part A if they (or their spouse) paid Medicare taxes while working. However, there are still other costs:
- Premium: $0 for most people, up to several hundred dollars per month if you don’t have enough work credits.
- Deductible: A set amount you pay each benefit period before Medicare starts covering your hospital costs.
- Coinsurance: Daily charges that apply for longer hospital or skilled nursing facility stays.
Who Is Eligible for Medicare Part A?
You’re generally eligible for Part A at age 65 if you or your spouse paid Medicare taxes for at least 10 years. You may also qualify earlier if you’ve received disability benefits for 24 months or have certain medical conditions such as End-Stage Renal Disease (ESRD).
How to Enroll
- Automatic enrollment: If you’re already receiving Social Security benefits when you turn 65, you’ll be enrolled in Part A automatically.
- Manual enrollment: If not, you’ll need to sign up through Social Security during your Initial Enrollment Period (IEP).
Key Takeaway
Medicare Part A is the foundation of your Medicare coverage, protecting you against major costs associated with hospital and inpatient care. Understanding what’s included and what isn’t is the first step in building a plan that meets your health and budget needs.
Watch: Medicare Part A Explained
Sometimes it’s easier to learn by watching. This short video breaks down the basics of Medicare Part A what it covers, what it costs, and who’s eligible so you can see the key points in action.
Aaron Sims is a nationally licensed Medicare expert with over 13 years of experience, helping thousands of seniors make confident decisions about their healthcare coverage. He is the founder of enrollmedicare.com, a platform dedicated to simplifying Medicare education and enrollment.
Aaron has worked extensively with Medicare Supplement, Medicare Advantage, and Prescription Drug Plans since 2012, earning a reputation for providing clear, unbiased guidance. He has been consulted as a Medicare resource by agents, agencies, and industry leaders, and continues to author educational content focused on retirement healthcare and senior benefits.
Based in Topeka, Kansas, Aaron is committed to making Medicare enrollment straightforward for individuals nationwide.
Finding the right Medicare plan doesn’t have to be complicated.
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