What Does Medicare Actually Cover? (A Plain-English Guide for Women Turning 65)
Every year, millions of Americans turn 65 and get hit with a stack of Medicare mailers they don’t understand. Part A. Part B. Part C. Part D. Medigap. Medicare Advantage. Open enrollment. Late penalties. It reads like alphabet soup — and the decisions you make (or miss) can cost you thousands of dollars a year. This guide cuts through all of it.
Medicare is the federal health insurance program for Americans 65 and older — and for some people under 65 with certain disabilities. It’s one of the most important financial and healthcare decisions you’ll ever make, and most people go into it completely unprepared.
The good news: once you understand how the four parts fit together, it actually makes sense. Think of it like building a house. Part A is the foundation. Part B is the walls. Part C is a pre-built house that includes everything. And Part D is the roof you add for prescriptions.
Here’s everything you need to know — in plain English, with 2026 numbers.
The Big Picture: How Medicare Is Structured
Medicare is divided into four parts. Here’s the 30-second version:
| Part | What It Covers | Who Offers It | 2026 Monthly Cost |
|---|---|---|---|
| Part A | Hospital stays, skilled nursing, hospice | Federal government | $0 for most people |
| Part B | Doctor visits, outpatient care, preventive care | Federal government | $202.90/month |
| Part C | Everything in A + B, often plus dental/vision/hearing | Private insurers | ~$14/month average |
| Part D | Prescription drugs | Private insurers | Varies by plan |
Medicare Part A: Hospital Insurance
Part A is your hospital coverage — and for most people, it’s free.
If you or your spouse worked and paid Medicare taxes for at least 10 years (40 quarters), you pay no monthly premium for Part A. That covers roughly 99% of Medicare beneficiaries.
What Part A Covers:
- Inpatient hospital stays
- Skilled nursing facility care (after a qualifying hospital stay)
- Hospice care
- Some home health services
- Inpatient rehabilitation
What Part A Does NOT Cover:
- Long-term custodial care (help with daily activities like bathing and dressing)
- Private nursing care
- Most dental, vision, and hearing care
2026 Part A Costs:
Monthly Premium: $0 for most people (free if you worked 10+ years)
Inpatient Deductible: $1,736 per benefit period
Days 1–60: $0 coinsurance after deductible
Days 61–90: $433/day coinsurance
After 90 days: $866/day (lifetime reserve days)
💡 What’s a “Benefit Period”?
A benefit period starts the day you’re admitted to a hospital or skilled nursing facility and ends when you haven’t received inpatient care for 60 consecutive days. There’s no limit to the number of benefit periods you can have — but the $1,736 deductible resets with each new one. If you’re hospitalized twice in one year with a 60-day gap in between, you pay the deductible twice.
Medicare Part B: Medical Insurance
Part B covers the everyday medical care you need — doctor visits, lab tests, preventive screenings, and outpatient services. Unlike Part A, Part B has a monthly premium for everyone.
What Part B Covers:
- Doctor visits and specialist consultations
- Outpatient hospital services and surgery
- Preventive care — annual wellness visits, flu shots, cancer screenings, mammograms
- Mental health services (outpatient)
- Durable medical equipment (wheelchairs, walkers, oxygen)
- Some home health care
- Lab tests, X-rays, and diagnostic imaging
- Physical, occupational, and speech therapy
What Part B Does NOT Cover:
- Routine dental care, dentures
- Routine vision care, eyeglasses
- Routine hearing care, hearing aids
- Most prescription drugs (covered by Part D)
- Cosmetic surgery
- Acupuncture (with limited exceptions)
- Long-term care
2026 Part B Costs:
Monthly Premium: $202.90 (standard — higher if income is above $106,000/year)
Annual Deductible: $283
Coinsurance: 20% of Medicare-approved amount after deductible
No out-of-pocket maximum — this is why many people add supplemental coverage
⚠️ The 20% Problem
Original Medicare (Parts A + B) has no out-of-pocket maximum. That 20% coinsurance under Part B is uncapped — meaning a $100,000 surgery could leave you with a $20,000 bill. This is why most people add either a Medigap (supplemental) policy or switch to Medicare Advantage (Part C), which does have an out-of-pocket maximum.
Medicare Part C: Medicare Advantage
Part C — also called Medicare Advantage — is a private insurance alternative to Original Medicare. Instead of getting your coverage directly from the government, you get it through a private insurer that Medicare has approved and pays.
Think of it this way: Original Medicare is like buying your house components separately. Medicare Advantage is like buying a pre-built house — everything is bundled, and often extras are included.
What Part C Covers:
- Everything that Original Medicare (Parts A + B) covers — required by law
- Most plans include Part D prescription drug coverage
- Many plans add dental, vision, and hearing coverage
- Some plans offer gym memberships, over-the-counter allowances, and transportation benefits
Key Differences from Original Medicare:
- Network restrictions: You typically need to use in-network doctors and hospitals (HMO or PPO networks)
- Out-of-pocket maximum: Required by law — average is $6,312 in 2026
- Referrals: Some plans require a referral to see a specialist
- Plan varies by location: Coverage, costs, and quality vary significantly by plan and zip code
2026 Part C Costs:
Average Monthly Premium: ~$14/month (down from $16.40 in 2025)
60% of plans: $0 beyond the Part B premium
Out-of-pocket maximum: Average $6,312 in-network
You still pay: The Part B premium ($202.90/month)
💡 Medicare Advantage vs. Original Medicare: Which Is Better?
It depends on your health, your doctors, and where you live. Medicare Advantage often costs less upfront and includes extras like dental and vision. But network restrictions mean you may not be able to see your current doctors, and prior authorization requirements can delay care. Original Medicare gives you more flexibility — any doctor in the US who accepts Medicare — but no out-of-pocket cap and no dental/vision. There’s no universally right answer.
Medicare Part D: Prescription Drug Coverage
Part D covers prescription drugs. It’s sold through private insurers and works separately from Original Medicare — though many Medicare Advantage plans bundle Part D in automatically.
How Part D Works:
- Each plan has a formulary — a list of covered drugs organized into cost tiers
- Lower tiers (generics) cost less; higher tiers (brand-name, specialty drugs) cost more
- Plans vary significantly in which drugs they cover and at what cost
- Always check that your specific medications are covered before choosing a plan
2026 Part D Costs:
Out-of-pocket cap: $2,100 for covered drugs in 2026 (new under the Inflation Reduction Act)
Monthly premium: Varies by plan
Annual deductible: Varies by plan (maximum $590 in 2026)
⚠️ The Late Enrollment Penalty — Don’t Miss This
If you don’t enroll in Part D when you’re first eligible (at 65) and don’t have other creditable drug coverage, you’ll pay a permanent late enrollment penalty — 1% of the national base premium for every month you were eligible but didn’t enroll. That penalty stays with you for life. This is one of the most common and costly Medicare mistakes people make.
What Medicare Doesn’t Cover (That Surprises Most People)
This is where people get caught off guard. Original Medicare does not cover:
- Dental care — routine cleanings, fillings, dentures, implants
- Vision care — routine eye exams, glasses, contact lenses
- Hearing aids — and they can cost $3,000–$7,000+ per pair
- Long-term care — custodial care in a nursing home or at home
- Most care outside the US — foreign travel emergencies are generally not covered
- Cosmetic surgery
- Most alternative care — acupuncture, massage, chiropractic (with limited exceptions)
This is why dental, vision, and hearing coverage are selling points for Medicare Advantage plans — Original Medicare simply doesn’t include them.
When to Enroll: The Dates That Matter
Missing Medicare enrollment windows is one of the most expensive mistakes people make. Here are the key dates:
📅 Initial Enrollment Period (IEP)
7-month window: starts 3 months before the month you turn 65, includes your birthday month, and ends 3 months after. This is your primary opportunity to enroll in Parts A, B, and D without penalty.
📅 General Enrollment Period
January 1 – March 31 each year. If you missed your IEP, you can enroll here — but coverage doesn’t start until July 1, and you may face late enrollment penalties.
📅 Annual Open Enrollment
October 15 – December 7 each year. This is when you can switch between Original Medicare and Medicare Advantage, or change your Part D plan. Changes take effect January 1.
📅 Special Enrollment Period (SEP)
If you’re still working at 65 and covered by an employer plan, you can delay Medicare enrollment without penalty. You get a Special Enrollment Period when your employer coverage ends. Important: COBRA does not count as creditable coverage — don’t delay enrollment based on COBRA.
Original Medicare vs. Medicare Advantage: A Quick Comparison
| Original Medicare (A + B) | Medicare Advantage (Part C) | |
|---|---|---|
| Doctor choice | Any doctor who accepts Medicare | In-network only (usually) |
| Out-of-pocket max | None — unlimited exposure | Required by law (~$6,312 avg) |
| Dental/vision/hearing | Not covered | Often included |
| Referrals needed | No | Sometimes (HMO plans) |
| Travel coverage | Nationwide | In-network area (varies) |
Your Medicare Checklist: What to Do Before You Turn 65
✅ Medicare Pre-65 Action List
✅ Mark your Initial Enrollment Period — 3 months before your 65th birthday
✅ Check if you’re still on an employer plan — understand your Special Enrollment rights
✅ List all your current medications — check Part D formularies before choosing a plan
✅ List your current doctors — check if they’re in-network for any Advantage plan you consider
✅ Decide: Original Medicare + Medigap vs. Medicare Advantage
✅ Don’t rely on COBRA to delay enrollment — it doesn’t count as creditable coverage
✅ Use Medicare.gov Plan Finder to compare Part D and Advantage plans in your area
The Bottom Line
Medicare isn’t as complicated as it looks once you see how the pieces fit together. Part A is your hospital coverage — free for most people. Part B is your doctor coverage — $202.90/month in 2026. Part C is the private alternative that bundles everything plus extras. Part D is your prescription coverage — and skipping it has permanent consequences.
The decisions you make at 65 — or before — set the foundation for your healthcare costs for the rest of your life. Take the time to understand your options. Use Medicare.gov’s comparison tools. Talk to a State Health Insurance Assistance Program (SHIP) counselor — they’re free and unbiased.
You’ve spent a lifetime paying into this system. Make sure you get everything you’re entitled to.
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Try PaperDecoder Free →This post is for informational purposes only and does not constitute legal or financial advice. Medicare rules, costs, and coverage change annually. Always verify current information at Medicare.gov or speak with a licensed Medicare counselor before making enrollment decisions.
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