Medicare Explained
In Plain English. Finally.

Parts A through D. Supplements. The gaps nobody warns you about. What your parent's Medicare actually covers, what it doesn't, and what those gaps cost your family — in language that doesn't require a law degree.

📅 Updated: April 2026
⏱️ Read time: 14 min
✍️ Written by: Family caregivers + reviewed by a certified insurance counselor
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The Four Parts of Medicare

Medicare isn't one thing — it's four separate programs that cover different things, have different costs, and work in ways that confuse even healthcare professionals. Here's what each one actually is.

A
Hospital Insurance
"The one most people already have"
Covers inpatient hospital stays, skilled nursing facility care (limited), hospice care, and some home health care. Most people don't pay a premium for Part A if they worked 10+ years.
2026 Premium: $0 for most people
Deductible: $1,632 per benefit period
⚠️ Does NOT cover long-term custodial care (helping with daily activities). This surprises most families.
B
Medical Insurance
"The one with a monthly premium"
Covers doctor visits, outpatient care, preventive services, durable medical equipment (wheelchairs, walkers), and some home health services.
2026 Premium: $185/month (standard)
Deductible: $257/year · 20% coinsurance after
⚠️ That 20% coinsurance has no cap. A $100,000 medical event = $20,000 out of pocket without supplemental coverage.
C
Medicare Advantage
"The all-in-one alternative"
Bundles Parts A and B through a private insurer. Often includes dental, vision, and hearing. Usually has networks — your parent must use in-network providers.
2026 Premium: $0–$150/month
Varies widely by plan and location
⚠️ Network restrictions can be a serious problem if your parent travels, moves, or needs a specialist. Read the fine print carefully.
D
Prescription Drug Coverage
"The one for medications"
Covers prescription drugs through private insurance plans. Each plan has a formulary — a list of covered drugs. Your parent's specific medications determine which plan is best.
2026 Premium: $0–$100+/month
New in 2025: $2,000 annual out-of-pocket cap
⚠️ Always compare plans using Medicare's Plan Finder tool based on your parent's SPECIFIC drug list. Never choose blindly.
💡 The Thing Nobody Explains

Original Medicare vs. Medicare Advantage — This Choice Matters More Than Anything

When your parent turns 65 (or when you're helping them through this process), the single most consequential decision is whether to stay with Original Medicare (Parts A + B) or switch to Medicare Advantage (Part C). Original Medicare gives maximum flexibility — any doctor, any hospital, anywhere in the country — with gaps you fill through a Medigap supplement. Medicare Advantage bundles everything but limits you to a network. Neither is universally better. It depends entirely on your parent's health, medications, preferred doctors, and how much they travel.

What They Don't Tell You

The Coverage Gaps That Blindside Families

Medicare covers a great deal. But the gaps — the things it explicitly does not cover — are where families get financially devastated. These are the ones that come up most often.

⚠️ The Biggest Misconception in Elder Care

Medicare does NOT cover long-term custodial care — the help with bathing, dressing, eating, and daily activities that most people picture when they think of "nursing home care." This is the most expensive care your parent may ever need, and Medicare pays almost none of it. Medicaid does — but only after assets are spent down to very low levels. Long-term care insurance (if your parent has it) may help. This is why the legal and financial conversation cannot wait.

Here is what Original Medicare does not cover in 2026:

🦷
Dental Care
Routine cleanings, fillings, extractions, and dentures. A major gap — dental health directly impacts overall health in older adults.
👁️
Vision Care
Routine eye exams, eyeglasses, and contact lenses. Medicare only covers eye exams for specific conditions like glaucoma or diabetic retinopathy.
👂
Hearing Aids
Not covered. Hearing aids cost $1,000–$7,000 per pair. Hearing loss in older adults is directly linked to cognitive decline — this gap has real health consequences.
🏠
Long-Term Home Care
Medicare covers skilled home health care (nursing, therapy) — but not custodial home care (help with daily activities). Average cost: $30–$40/hour.
✈️
Care Outside the US
With very few exceptions, Medicare doesn't cover medical care outside the United States. Travel insurance is essential for any international travel.
🏥
The 20% Coinsurance
Under Original Medicare, your parent pays 20% of all Part B costs with no annual limit. This is unlimited financial exposure. A Medigap plan addresses this.
Filling the Gaps

Medigap & Supplement Plans Explained

Medigap (Medicare Supplement) plans are sold by private insurers to cover what Original Medicare doesn't — primarily the 20% coinsurance and deductibles. If your parent has Original Medicare, a Medigap plan is almost always worth having.

Plan G
Most Popular
What it covers
Part A hospital coinsurance & costs
Part B coinsurance (the 20%)
Part A deductible
Skilled nursing coinsurance
Foreign travel emergencies
Part B deductible ($257)
Est. cost: $100–$180/month
Plan N
Good Value
What it covers
Part A hospital coinsurance
Part B coinsurance (with copays)
Part A deductible
Skilled nursing coinsurance
Part B deductible
Part B excess charges
Est. cost: $80–$140/month
Plan K
Budget Option
What it covers
Part A hospital coinsurance
50% of Part B coinsurance
50% of Part A deductible
Skilled nursing coinsurance
Part B deductible
Foreign travel
Est. cost: $50–$90/month
💡 Key Insight

The Best Time to Buy a Medigap Plan Is When Your Parent First Enrolls in Part B

During the 6-month Medigap Open Enrollment Period that begins when your parent is 65 and enrolled in Part B, insurers cannot deny coverage or charge higher premiums based on health conditions. After this window closes, they can — and often do. If your parent missed this window and has health conditions, buying supplemental coverage becomes much harder and more expensive. This is one of the most consequential timing decisions in Medicare.

Interactive Tool

Quick Coverage Checker

Select the care situations your parent is currently dealing with or anticipating. We'll tell you what Medicare covers, what it doesn't, and what to do about the gaps.

What is your parent currently dealing with?

Check all that apply — then see what Medicare actually covers for each.

Critical Deadlines

Medicare Enrollment Deadlines That Actually Matter

Missing Medicare enrollment deadlines can result in permanent premium penalties and coverage gaps. These are not bureaucratic inconveniences — they are costly mistakes that follow your parent for life.

1
Initial Enrollment Period (IEP)
The 7-month window around your parent's 65th birthday — 3 months before, the month of, and 3 months after. This is the first and most important enrollment opportunity for Parts A and B.
⚠️ Missing this without qualifying for a Special Enrollment Period = lifetime premium penalty
2
Medigap Open Enrollment Period
Starts the month your parent is both 65+ and enrolled in Part B. Lasts 6 months. During this window, insurers cannot deny coverage or charge more due to health conditions. The single most important Medigap window.
⚠️ After this window closes, Medigap coverage can be denied or priced out of reach based on health history
3
Annual Open Enrollment (Oct 15 – Dec 7)
Every year, your parent can switch Medicare Advantage plans or Part D drug plans for the following year. Changes take effect January 1. This is when to review drug plans if medications have changed.
→ Mark this on your calendar every October
4
Special Enrollment Periods (SEPs)
If your parent was covered by employer insurance past 65, they may qualify for a Special Enrollment Period when that coverage ends. This avoids the late enrollment penalty — but only if handled correctly and within strict timelines.
⚠️ Contact Medicare within 8 months of employer coverage ending to avoid penalties
Free Resource

Your State Has Free Medicare Counseling — Use It

Every state has a State Health Insurance Assistance Program (SHIP) that offers free, unbiased counseling from trained volunteers — not insurance salespeople. They will sit with you, review your parent's specific situation, and help compare plans with zero agenda. This is genuinely one of the best free resources available to families navigating Medicare. Find your state's SHIP program at medicare.gov/talk-to-someone.

Interactive Tool

Which Medicare Path Is Right for Your Parent?

Find the Right Medicare Path

Answer three questions about your parent's situation and we'll recommend a starting direction. This is not a substitute for professional counseling — but it's a helpful place to start.

How important is it that your parent can see ANY doctor — not just those in a network?

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Important: This guide is for informational purposes only. Medicare rules change annually. Always verify current costs, coverage, and enrollment deadlines at Medicare.gov or through your state's free SHIP counseling program. We are not licensed insurance advisors. Affiliate disclosure: Some links on this page earn us a small commission — we only recommend services we'd suggest to our own families.
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