Introduction
Medicare Supplement Insurance, also known as Medigap, helps pay for costs not covered by Original Medicare (Part A and Part B). These include copayments, coinsurance, and deductibles. In 2026, Medigap remains a vital option for seniors who want predictable healthcare expenses and nationwide access to providers.
1. How Medigap Works
Must have Medicare Part A and Part B to enroll.
Cannot be combined with Medicare Advantage.
Standardized plans identified by letters (A, B, C, D, F, G, K, L, M, N).
All plans of the same letter offer identical benefits, regardless of insurer.
Premiums vary by state, age, and insurer.
2. Most Popular Plans in 2026
| Plan | Coverage Highlights | Premiums (Age 65) | Best For |
|---|---|---|---|
| Plan G | Covers all except Part B deductible ($257 in 2026). Includes Part A deductible, coinsurance, skilled nursing, Part B excess charges, foreign travel emergency (80%). | $120–$180/month | Seniors wanting comprehensive coverage |
| Plan N | Lower premiums, but $20 copay for office visits, $50 for ER (if not admitted). Does not cover Part B excess charges. | $80–$130/month | Budget‑conscious seniors |
| Plan F | Covers everything, including Part B deductible. Only available to those eligible before Jan 1, 2020. | $150–$200/month | Legacy enrollees |
| High Deductible Plan G | Same as Plan G but with $2,800 deductible. Lower premiums. | $40–$70/month | Healthy seniors seeking low fixed costs |
3. Coverage Comparison
Hospital Costs (Part A): All major plans cover coinsurance and deductibles.
Doctor Visits (Part B): Plan G covers excess charges; Plan N does not.
Foreign Travel: Plans G and F cover 80% of emergencies abroad.
Copays: Plan N requires small copays; Plan G does not.
Deductibles: Plan G requires paying Part B deductible ($257 in 2026).
4. Enrollment Rules
Open Enrollment Period: Six months after turning 65 and enrolling in Part B. Guaranteed acceptance regardless of pre‑existing conditions.
Outside Enrollment: Insurers may deny coverage or charge higher premiums.
State Variations: Premiums differ widely; e.g., Plan G costs ~$120/month in Texas but ~$180/month in New York.
5. Pros & Cons
Plan G
✅ Most comprehensive for new enrollees.
✅ Predictable costs.
❌ Higher premiums than Plan N.
Plan N
✅ Lower monthly premiums.
✅ Good fit for healthy seniors.
❌ Copays and no coverage for excess charges.
Plan F
✅ Covers everything.
❌ Closed to new enrollees.
High Deductible Plan G
✅ Lowest premiums.
❌ High upfront deductible.
6. Trends in 2026
Rising popularity of Plan G and Plan N as Medicare Advantage networks shrink in some counties.
Digital enrollment platforms simplify comparisons and applications.
Premium growth: Average Medigap premiums rose ~3% YoY.
Foreign travel coverage increasingly valued by retirees living abroad part‑time.
Conclusion In 2026, Medicare Supplement Plans remain essential for seniors seeking financial predictability and nationwide provider access. Plan G is the best overall choice for new enrollees, offering nearly complete coverage with only the Part B deductible. Plan N appeals to budget‑conscious seniors willing to accept small copays. Plan F continues to serve legacy enrollees, while High Deductible Plan G offers a low‑premium alternative. Choosing the right plan depends on health status, budget, and lifestyle needs.
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