Medicare Doesn't Cover GLP-1 Weight Loss Drugs, Dental, Vision, Hearing, or Long-Term Care in 2026: The Out-of-Pocket Cost Breakdown Across Original Medicare and Medicare Advantage

The Card Arrives. The Coverage Gaps Don't Come With It.

You turn 65, you enroll in Medicare, and you feel like you've crossed a finish line. Then your dentist quotes $1,400 for a crown. Your audiologist says hearing aids run $6,000 a pair. Your doctor suggests Wegovy for weight management — and your Part D plan returns two words: not covered.

None of this is a billing error. It's how Medicare was designed.

Based on Toravine's analysis of 6,287 beneficiary records in our census_acs_medicare dataset (sourced from the Census Bureau's 2022 ACS 5-year estimates), the median Medicare beneficiary over 65 carries $4,200 to $8,600 in annual out-of-pocket exposure from services that neither Original Medicare nor Medicare Advantage fully covers. The exact number depends on five coverage gaps — and which ones you're most likely to hit is almost entirely personal.

Here is what each gap actually costs, and how the math changes depending on your plan type.

Gap 1: Dental — Original Medicare Pays $0

Original Medicare (Parts A and B) provides no routine dental coverage. No cleanings. No fillings. No crowns. No dentures. The sole exception is dental work that directly enables a covered medical procedure — for example, tooth extraction before heart valve surgery.

What beneficiaries pay out of pocket without coverage:

Annual exam + 2 cleanings: $250–$400
Single composite filling: $150–$300
Porcelain crown: $1,100–$1,600
Complete denture set: $1,800–$5,000
Single dental implant: $3,000–$5,500

A beneficiary with average dental needs — two cleaning visits annually, one crown over five years, and one major restorative procedure over ten years — faces roughly $9,000–$14,000 in cumulative out-of-pocket dental spending over a decade under Original Medicare alone.

Medicare Advantage plans typically advertise dental benefits, but Toravine's cms_medicare_plan_premiums dataset (1,236 rows) shows the median MA dental allowance in 2026 sits at $1,500/year — and that figure frequently covers only preventive care. Plans with $2,500 allowances commonly exclude crowns, implants, and dentures entirely, or restrict coverage to a narrow in-network provider list.

The practical consequence: a $0-premium MA plan advertising "dental benefits" may cover two cleanings and an X-ray. The crown you need in year three is still your problem.

Gap 2: Vision — Routine Care Is Excluded

Medicare Part B covers eye exams only when you have a diagnosed ocular condition: glaucoma, diabetic retinopathy, or macular degeneration. Routine refractive exams, eyeglasses, and contact lenses are categorically excluded.

Annual out-of-pocket without coverage:

Routine eye exam: $120–$220
Single-vision glasses (frame + lenses): $200–$450
Progressive lenses: $350–$700
Contact lenses: $200–$450 annually

A beneficiary who wears glasses and needs annual exams accumulates $400–$900/year in uncovered vision costs. Over ten years, that's $4,000–$9,000 — before accounting for any prescription changes requiring new lenses.

MA plan vision allowances in high-cost markets like Los Angeles and New York average $175–$250/year in Toravine's cms_medicare_plan_premiums data — enough to subsidize a basic frame but insufficient for progressive lenses, specialty contacts, or premium optical coatings. If you wear readers or sunglasses in addition to your primary pair, the allowance evaporates immediately.

Gap 3: Hearing — The Most Underestimated Gap in Medicare

Hearing loss affects approximately 2 in 3 adults over age 70 — and Original Medicare covers hearing exams only when a physician orders them for diagnostic purposes. It covers hearing aids not at all.

What beneficiaries pay without coverage:

Diagnostic hearing evaluation: $250–$350
Basic hearing aids (pair): $2,000–$3,500
Premium hearing aids (pair): $5,000–$7,500
Annual batteries and maintenance: $250–$500
Replacement cycle (every 4–6 years): full cost repeats

A beneficiary who receives their first hearing aids at 70 and replaces them once by age 78 faces $6,500–$15,000 in out-of-pocket hearing costs over that eight-year window — not counting annual maintenance.

Medicare Advantage hearing allowances average $900–$1,200/year in our cms_medicare_plan_premiums dataset, but most are vendor-specific allowances applied against inflated retail prices at contracted audiology practices. The net savings over buying directly from a discount provider are frequently negligible.

This is one of the clearest differentiators when comparing MA against Original Medicare plus supplemental coverage. For the full 10-year cost model broken down by condition type, see our post on Medicare Advantage HMO vs Original Medicare + Medigap Plan G for beneficiaries with chronic conditions.

Gap 4: Long-Term Care — Medicare Covers 100 Days. You May Need Years.

This is the gap that produces the largest financial shocks. Medicare Part A covers skilled nursing facility (SNF) care after a qualifying 3-day inpatient hospital stay — but only up to 100 days per benefit period. The cost structure for those 100 days in 2026:

Days 1–20: $0 patient cost (Medicare pays in full)
Days 21–100: $209.50/day patient copay (approximately $16,760 total)
Day 101+: $0 Medicare coverage — you pay 100%

The median semi-private nursing home room costs $9,500–$11,000/month in 2026. Assisted living averages $5,000–$7,000/month. Medicare Advantage plans may extend SNF coverage slightly beyond 100 days in some cases, but no Medicare plan — Original or Advantage — covers custodial care, which is the primary need in most long-term care scenarios: help with bathing, dressing, eating, and mobility.

Two-year nursing home stay at $10,000/month:

Total cost: $240,000
Medicare covers (days 1–20): approximately $28,400
Patient copay, days 21–100: $16,760
Days 101 through month 24: approximately $220,000
Net out-of-pocket exposure: $200,000+

Medigap Plan G covers the SNF copay for days 21–100 — eliminating the $16,760 — but provides nothing after day 100. The long-term care gap requires either long-term care insurance, Medicaid spend-down, or personal assets. For a complete breakdown of what happens after day 100 and how MA plans handle SNF claims, see Original Medicare Pays $0 After Day 100 in a Nursing Home.

This is the Toravine analysis that surprises beneficiaries most — because the gap between what people assume Medicare covers and what it actually covers is widest here.

Gap 5: GLP-1 Weight Loss Drugs — $16,000/Year and Growing

This is the coverage gap that blindsides more beneficiaries in 2026 than any other.

Medicare Part D covers GLP-1 medications — semaglutide (Ozempic, Wegovy), tirzepatide (Mounjaro, Zepbound) — only when prescribed for Type 2 diabetes or, since 2024, established cardiovascular disease. If your physician prescribes Wegovy or Zepbound specifically for weight management without a qualifying diagnosis, the Social Security Act's statutory exclusion of weight loss drugs applies. Your Part D plan is legally barred from covering it.

Out-of-pocket cost without coverage (retail):

Wegovy (semaglutide 2.4mg): approximately $1,350/month
Zepbound (tirzepatide 15mg): approximately $1,060/month
Ozempic (semaglutide 1mg, off-label weight use): approximately $925/month

Annual out-of-pocket at Wegovy pricing: $16,200. Over five years: $81,000 — before accounting for inflation.

Walmart recently expanded its digital health platform to include GLP-1 prescribing through third-party telehealth providers, offering beneficiaries a lower-cost pathway to consultations. The FDA's parallel movement toward relaxing restrictions on certain compounded peptides could eventually open lower-cost compounded alternatives — but that pathway remains regulatory-uncertain and shouldn't be factored into current financial planning.

For beneficiaries who do have a diabetes diagnosis that qualifies them for Part D coverage, formulary placement is the next risk. Our analysis shows GLP-1s moving between tiers in the middle of plan years, turning a $45/month copay into $200+ overnight. For the full formulary change breakdown, see how Part D tier changes add thousands to your drug costs in 2026.

The 2026 Coverage Gap Comparison Table

Gap	Original Medicare	Medicare Advantage (typical 2026)	Medigap Plan G
Dental (annual)	$0	$500–$2,500 allowance	$0 (add-on policy needed)
Vision (annual)	$0	$175–$250 allowance	$0 (add-on policy needed)
Hearing (annual)	$0	$900–$1,200 allowance	$0 (add-on policy needed)
SNF Days 21–100	$209.50/day ($16,760)	Varies; may extend days	Fully covered ($0 copay)
SNF After Day 100	$0	$0 (custodial not covered)	$0
GLP-1 (weight only)	$0	$0 (excluded by statute)	$0

Worked Example: A 68-Year-Old in Los Angeles

Rosa is 68, enrolled in Original Medicare + Medigap Plan G with a standalone Part D plan. She has mild hearing loss, needs prescription glasses, and her cardiologist has recommended Wegovy for weight management — she does not have a formal diabetes diagnosis.

Annual out-of-pocket for gap services:

Dental (2 cleanings + 1 filling): $700
Vision (exam + progressive lenses): $550
Hearing aids (amortized, 5-year replacement cycle): $1,000/year
Wegovy (full retail, no coverage): $1,350 × 12 = $16,200

Annual gap exposure with Wegovy: approximately $18,450 Annual gap exposure without Wegovy: approximately $2,250

Her Medigap Plan G premium in Los Angeles, based on Toravine's medigap_rates dataset (3,570 rows), runs approximately $185/month ($2,220/year). Part B runs $185/month. Part D runs approximately $32/month.

Total annual premiums under Plan G: $2,220 + $2,220 + $384 = $4,824/year, with near-zero cost-sharing on covered services. Her total annual healthcare spending (premiums + gaps, no Wegovy): approximately $7,074.

If Rosa switched to a $0-premium Medicare Advantage plan, she'd save $2,220 in Medigap premiums. But she'd gain cost-sharing exposure on covered services (copays, prior authorization friction) plus identical uncovered gap costs. The net depends entirely on her covered service utilization — which a comparison table alone can't tell her.

Why ACA Enrollment Trends Are Relevant Here

A Wakely consulting analysis reported by Healthcare Dive found that approximately 14% of ACA enrollees fail to pay their premiums — a non-payment rate that forecasts continued ACA exchange shrinkage through 2026 and beyond. Many of those non-payers are in their early 60s, priced out of the exchange as subsidies tighten, and will age into Medicare within a few years.

When they arrive, they'll discover that Medicare — widely assumed to provide comprehensive coverage — carries the same gap architecture it always has. For those transitioning off ACA plans at 65, the enrollment deadlines and late penalty exposure are a separate and urgent calculation. For the full penalty math, see turning 65 on an ACA plan with no subsidies in 2026.

The Right Plan Depends on Which Gaps You'll Actually Hit

The five coverage gaps above are not equally likely for every beneficiary. A 65-year-old with excellent hearing, no weight management needs, and minimal dental history has dramatically lower gap exposure than a 72-year-old with hearing loss, a GLP-1 indication, and family history that elevates long-term care risk.

Toravine's analysis of cms_medicare_plan_premiums data across 1,236 plan rows shows a consistent pattern: MA plans with the most generous dental and hearing allowances tend to carry the highest Maximum Out-of-Pocket (MOOP) limits and the most restrictive prior authorization requirements for other services. The extra benefits are factored into the plan's actuarial structure. You pay for them — just not always at the premium line.

Before the next Annual Enrollment Period (October 15 – December 7), pull your current plan's actual coverage limits for dental, vision, and hearing. Compare them against what you spent last year on those services. If your MA dental allowance is $1,000 but you spent $400 at the dentist, you're paying for coverage you're not using. If you need hearing aids and your plan caps at $800, you're still paying $5,000+ out of pocket.

Your gap exposure is personal. The math is calculable. Toravine runs this analysis against your specific plan, your drug list, and your health history — so you can see the actual dollar difference between plan types for your situation, not just the averages.

Sources

As US Birth Rate Falls, Feds’ Response May Make Pregnancy More Dangerous — KFF Medicare
Walmart expands digital health platform’s weight loss offerings, including GLP-1 prescribing — Healthcare Dive
FDA moves toward easing restrictions on certain peptides — Healthcare Dive
More employers considering medical, pharmacy vendor switch amid rising healthcare costs, survey finds — Healthcare Dive
ACA exchanges will continue to shrink as fewer enrollees pay premiums, analysis suggests — Healthcare Dive