Thousands of Medicare beneficiaries pay more than they need to every month because they believe — incorrectly — that they’re stuck with their current Medigap plan. Some are right: health conditions and state rules do limit what’s possible. But most people have more options than they realize. This guide covers who can switch, who can’t, what it costs to try, and the one sequence mistake that locks you out permanently.
Most of the confusion around switching Medigap plans comes from one hidden fact: there is a gigantic difference between your right to apply for a new plan and a guaranteed right to be accepted. Here are the questions that cut to the heart of it.
You can always apply. But applying and being accepted are two entirely different things. Outside of specific protected windows, insurance companies can run full medical underwriting — reviewing your health history and declining your application if you have serious conditions. The protected windows are: the 6-month Medigap Open Enrollment Period when you first turn 65 and enroll in Part B; specific guaranteed issue events triggered by losing other coverage; and, in 21 states, annual birthday or anniversary rule windows. Outside those windows, in most states, acceptance is at the insurer’s discretion.
This is the most common reason people want to switch — and the most frustrating one to navigate. If your health is good and you live in a state without special rules, you can often switch to a less expensive plan with a different insurer by passing medical underwriting. Insurers ask about your conditions and can decline you or charge more if they find risk. However, many healthy seniors are approved without incident — common conditions like controlled hypertension are often not disqualifying, while conditions like dialysis, active cancer treatment, or oxygen use typically are. Applying costs nothing; you don’t cancel your current plan until the new one approves you.
The Medigap Open Enrollment Period is a one-time, six-month window that begins the first day of the month in which you are both age 65 and enrolled in Medicare Part B — confirmed directly by the Centers for Medicare & Medicaid Services. During it, no insurer can deny you, charge you more, or require health questions for any plan they sell in your state. It does not repeat. It is not the same as Medicare’s fall open enrollment (October 15–December 7), which is for Medicare Advantage and Part D drug plans only. Missing this six-month window is one of the costliest Medicare timing mistakes a person can make.
A guaranteed issue right restores your ability to buy a specific Medigap plan without medical underwriting, outside of your open enrollment period. Federal law creates these rights in specific situations — and the window is 63 days from the date your prior coverage ends or the date you receive written notice it will end, whichever comes first. Common triggers include: leaving a Medicare Advantage plan within the first 12 months; your Medicare Advantage plan leaving your area or stopping coverage; losing employer retiree health coverage; and your Medigap insurer going bankrupt or committing fraud.
Yes. California has a birthday rule allowing Medigap enrollees to switch to a plan of equal or lesser benefits — from any insurer — within a window around their birthday each year, with no medical underwriting. Oregon, Idaho, Illinois, Maryland, Nevada, Oklahoma, Louisiana, Kentucky, and others have similar rules. As of 2026, Delaware, Indiana, Virginia, Wyoming, West Virginia, Utah, and New Mexico have enacted or expanded birthday or anniversary rules, bringing the total to 21 states with some form of annual protected switching right. The exact window length, eligible plans, and carrier restrictions vary by state — contact your state’s SHIP program for current specifics.
If you switch during a protected window — open enrollment, a guaranteed issue event, or a birthday rule — yes, coverage begins immediately for all conditions. If you switch by passing medical underwriting, the new policy may impose a waiting period of up to six months for pre-existing conditions — meaning the new plan won’t cover expenses related to those conditions during that window. This waiting period cannot be applied if you had at least six months of continuous creditable coverage before the new policy started. Most people who have been on Medigap continuously satisfy this requirement without thinking about it.
Neither plan is universally better — it depends on how often you use medical care and whether your providers accept Medicare assignment. Plan G averages $220 per month nationally for a 65-year-old; Plan N averages $171. The $49 monthly difference ($588 per year) buys you two things with Plan G: no copays at office or ER visits, and coverage for Part B excess charges (up to 15% above Medicare-approved rates for providers who don’t accept Medicare assignment). If your doctors accept Medicare assignment and you average fewer than six to eight doctor visits per year, the math often favors Plan N. If you see specialists regularly or live in a state where excess charges are common, Plan G’s predictability may be worth the premium.
One company’s denial is not a verdict from the entire market. Different carriers use different underwriting guidelines — a condition that results in a decline at one insurer may be acceptable at another. Get quotes from multiple carriers before concluding no Medigap plan is available to you. If all Medigap paths are blocked due to health, Medicare Advantage is always available regardless of health status — no insurer can deny you a Medicare Advantage plan. Your state’s SHIP program (free, unbiased counseling available in every state) can help you understand what your actual options are given your specific health situation and state rules. Reach SHIP at shiphelp.org or 1-877-839-2675.
People confuse several different Medicare enrollment periods. Only one of them gives you unlimited access to any Medigap plan in your state. The others are narrower, situational, or state-specific. Getting these straight is the most important thing this guide can do for you.
Starts on the first day of the month you are both age 65 or older and enrolled in Medicare Part B. Lasts exactly six months. During it, every insurer must sell you any plan they offer in your state — no health questions, no denial, no higher pricing. This window is one-time and does not repeat under federal law. If you delayed Part B because you had employer coverage, your open enrollment period starts the month you enroll in Part B, even if you are well past 65. This delayed start is a common source of confusion that causes people to miss the window entirely.
Federal law creates specific situations where you regain the right to purchase certain Medigap plans without underwriting. The 63-day clock begins on the date your prior coverage actually ends — not when you start looking. Common triggers:
- You tried Medicare Advantage for the first time and want to switch back to Original Medicare within 12 months
- Your Medicare Advantage plan is leaving your service area or stopping coverage entirely
- You’re losing employer-sponsored retiree health coverage
- Your Medigap insurer went bankrupt, committed fraud, or misled you
- You moved out of your Medicare Advantage plan’s service area
Important 2026 change: Beginning April 9, 2026, Plan N is no longer available in many guaranteed issue situations in most states. If a guaranteed issue event applies to you, Plans A, B, C (if eligible), D, G, and K through N may apply depending on your situation — but the Plan N restriction under GI scenarios is now in effect. Confirm what’s available with your state’s SHIP counselor.
Twenty-one states now offer some form of protected annual switching window beyond federal minimums. Birthday rules (California, Oregon, Idaho, Illinois, Maryland, Nevada, Oklahoma, Louisiana, Kentucky, Delaware, Wyoming, Utah, Indiana, Virginia, New Mexico, and others) allow you to switch to a plan of equal or lesser coverage — without health questions — during a window around your birthday each year. Anniversary rules (Missouri) allow a 30-day window around the anniversary of your original enrollment. Year-round guaranteed issue is available in Connecticut, New York, Massachusetts, Rhode Island (during Annual Enrollment Period), and Washington (same plan type only). These state protections change — Delaware and Indiana both expanded their birthday rules effective 2026. Always verify your state’s current rules with SHIP.
These two plans cover the same hospital costs, skilled nursing, and foreign emergency care. The only meaningful differences are premiums, copays at office and ER visits, and excess charge exposure. Here is a plain-language breakdown for both.
| Coverage Item | Plan G | Plan N | High-Deductible Plan G |
|---|---|---|---|
| Avg. Monthly Premium (age 65) | ~$220/month national average | ~$171/month national average | ~$52–$80/month |
| Part B Deductible ($283 in 2026) | You pay — not covered | You pay — not covered | You pay — not covered |
| Doctor Office Visit Copay | None — covered 100% | Up to $20 per visit | None after deductible met |
| Emergency Room Copay | None — covered 100% | Up to $50 (waived if admitted) | None after deductible met |
| Part B Excess Charges | Covered — pays the 15% gap | Not covered — you pay up to 15% above Medicare rate | Covered after deductible |
| Part A Hospital Deductible ($1,736 per benefit period) | Covered | Covered | Covered after deductible |
| Skilled Nursing Coinsurance | Covered | Covered | Covered after deductible |
| Foreign Emergency Coverage | 80% — up to $50,000 lifetime | 80% — up to $50,000 lifetime | 80% — up to $50,000 lifetime |
| Annual Out-of-Pocket Maximum Exposure | $283 deductible only | $283 deductible + copays + possible excess charges | $2,950 deductible in 2026 |
| Best Suited For | Frequent medical users; those who want zero surprises after the deductible | Relatively healthy; providers accept Medicare assignment; fewer visits | Healthy, financially prepared; want catastrophic coverage at lowest premium |
The $49/month premium gap ($588/year) between Plan G and Plan N is what Plan N’s copays and excess charge risk are priced to cover on average. If you visit the doctor fewer than six to eight times per year and your providers accept Medicare assignment, Plan N’s copays typically total less than the premium savings. The critical variable most people overlook: excess charges. If even one of your specialists opts out of Medicare assignment, they can bill up to 15% above the Medicare-approved rate. Plan G covers that gap; Plan N does not. Ask your current providers directly — “Do you accept Medicare assignment on all claims?” — before choosing Plan N.
If you’re applying for a Medigap plan outside a protected window, the insurer will ask health questions. People catastrophize this process — and they also sometimes underestimate it. Here’s what underwriting actually evaluates.
Many common health conditions that people assume will disqualify them do not — particularly when controlled. Controlled hypertension (high blood pressure) managed with medication is generally not a disqualifier at most carriers. The same is typically true for controlled Type 2 diabetes without complications, high cholesterol, mild arthritis, past procedures that have resolved without ongoing complications, and stable thyroid conditions. Each carrier uses its own guidelines — two companies can reach opposite conclusions on the same applicant. Getting quotes from multiple carriers through an independent broker costs nothing and is always worth doing.
Several conditions are common automatic declines at most Medigap carriers outside protected windows:
- Currently receiving dialysis or in kidney failure
- Active cancer treatment (chemotherapy, radiation, or recent diagnosis)
- Requiring oxygen therapy for COPD or other respiratory conditions
- Recent heart attack (typically within the past 6–24 months, varies by carrier)
- Congestive heart failure
- Recent stroke or TIA (within 6–24 months at most carriers)
- Recent hospitalization (within 90 days at some carriers)
- Organ transplant recipient
If you’ve been denied by one carrier, don’t assume all carriers will decline. A denial from one company is a business decision, not a permanent verdict. Independent brokers who work with 20+ carriers regularly find coverage for applicants who were declined elsewhere.
- Medicare Advantage plans must accept all applicants during enrollment periods regardless of health — no medical underwriting, ever. The trade-off is network restrictions, prior authorizations, and variable out-of-pocket costs.
- State guaranteed issue rules — If you live in New York, Connecticut, Massachusetts, or Rhode Island (during AEP), you have year-round access to Medigap plans without underwriting. If you’re in a birthday rule state, your annual window opens protection once per year.
- Wait for a qualifying event — If your Medicare Advantage plan changes significantly at annual renewal, that change may trigger a guaranteed issue right to get back into a Medigap plan without health questions.
Where you live may matter as much as your health. Twenty-one states have enacted annual protections that go beyond what federal law requires. Here are the main categories — always verify your specific state’s current rules with SHIP before acting.
Connecticut & New York
Both states mandate year-round guaranteed issue for all Medigap plans. You can switch plans or change insurers at any time, for any reason, with no medical underwriting and no health questions. These are the most protective states in the country for Medigap consumers.
Rhode Island
Medigap enrollees in Rhode Island can apply for any Medicare Supplement plan during the Annual Enrollment Period (October 15 through December 7) without medical underwriting or health status restrictions — a protection that applies once per year and covers all plan types.
California & Oregon
Annual birthday window allows switching from any Medigap plan to a plan of equal or lesser benefits from any insurer. Window length varies by carrier in California. Oregon uses a similar structure. No health questions during the window. Most permissive birthday rule states for plan choice.
Idaho, Illinois, Maryland, Nevada, Oklahoma, Louisiana, Kentucky & Others
These states allow switching to equal or lesser coverage during a window around your birthday each year. Illinois limits the birthday rule to enrollees aged 65–75. Indiana (effective January 2026) and Delaware (effective January 2026) joined this group. Check your specific state’s window length and eligible plan types with SHIP.
Utah & Virginia
Utah allows switching to equal or lesser coverage within 60 days of your birthday — but only with your current carrier. Virginia (effective July 2025) allows switching to the same lettered plan from a different carrier within 60 days after the birthday month. Read this carefully: insurer options differ from broader birthday rule states.
Missouri
Missouri uses an anniversary rule rather than a birthday rule — enrollees have a 30-day window each year on the anniversary of their original Medigap enrollment date to switch to the same lettered plan from a different insurer without underwriting. Contact SHIP Missouri for current carrier participation.
The order you follow matters enormously. The sequence below protects you from ever being without coverage — the worst outcome in this process.
Are you still in your 6-month open enrollment period? Have you had a qualifying life event in the last 63 days? Do you live in a state with a birthday or anniversary rule? Contact your state’s SHIP counselor first — this call is free, takes 20–30 minutes, and prevents you from making a move that costs you your current coverage without a clear path to new coverage. SHIP counselors do not sell plans and have no financial stake in your decision.
Every Plan G from every insurer covers the same services — that is federally standardized. But premiums for identical coverage can vary by $100 or more per month between insurers for the same 65-year-old in the same ZIP code. Use Medicare.gov’s Medigap plan comparison tool or work with an independent broker (one who represents multiple carriers, not a captive agent for a single company). Ask about household discounts — many carriers offer 5–12% off when two adults in the same household are enrolled, even if their plans differ.
Submit your application for the new plan while your current coverage is still fully active. If you are going through underwriting, this process may take days to a few weeks. Do not assume approval and do not alert your current insurer yet. If you are in a protected window (open enrollment, guaranteed issue event, or birthday rule), the insurer must approve you — the approval is a formality. Outside those windows, wait for a written approval letter with your effective date before proceeding.
Once you have a written approval letter and a confirmed effective date from the new insurer, coordinate so there is no gap between plans. Most people arrange for the new plan to begin on the first of the month following approval. Do not request a start date before you have the written approval in hand. Overlap by one day is fine; a gap of one day is not. If you have a hospitalization or emergency during an uncovered gap, you face Original Medicare cost-sharing with no supplement protection.
Contact your current Medigap insurer in writing to cancel, specifying the date. Request a written confirmation of cancellation. Under federal law, you have a 30-day “free look” period when you first receive a new Medigap policy — if you cancel within 30 days of receiving your new policy, you can get a refund of any premiums paid and return to your old plan if it is still within that window. After 30 days, returning to the old plan requires new underwriting in most states. Keep the cancellation confirmation and any refund documentation for your records.
Switching Medigap plans itself has no fee or penalty — you are simply enrolling in a new plan and cancelling an old one. The financial outcome depends on whether you move to a lower or higher premium and whether the new carrier prices using attained-age, issue-age, or community rating. Premium savings of $50–$150 per month are common when healthy seniors switch from a longtime insurer with accumulated rate increases to a newer entrant in their market with lower introductory rates. Watch for one risk: a plan with a low initial rate may have a history of large annual increases. Ask for the insurer’s rate increase history for the past five years before committing. An independent broker or your SHIP counselor can pull this data.
You have two main paths. If your health is generally good, apply to two or three competing Medigap carriers for the same plan letter — the federal standardization means the coverage is identical, but the price can be $80–$120 less per month at a different insurer for the same 65-year-old. Provide the same application answers to each. Apply while your current coverage is active. The application is free; you only sign up after you’re approved and have a start date you’re happy with. If you have significant health conditions, your SHIP counselor can identify which carriers in your state are known for more lenient underwriting on specific conditions — that information matters more than anything you’ll find on a website.
This is one of the most time-sensitive Medigap situations that exists. If you first enrolled in Medicare Advantage and are within the first 12 months of enrollment, federal law gives you a guaranteed issue right to return to Original Medicare and enroll in a Medigap plan — without underwriting — during a 63-day window. The 63 days starts the day your Advantage coverage ends, not the day you decide to switch. If you’ve been on Medicare Advantage longer than 12 months, you’ve lost the first-try trial window and will need to pass underwriting in most states. Contact SHIP immediately if you’re within 12 months of your Advantage enrollment — that window is closing in real time.
Not necessarily — it depends heavily on your state and your specific condition. If you live in New York or Connecticut, you have year-round guaranteed issue, period — no underwriting regardless of your health. If you live in Rhode Island, the Annual Enrollment Period window protects you once a year. If you’re in a birthday rule state, that annual window may let you switch to a plan of equal or lesser benefits — switching from Plan G to Plan N to save on premiums without needing to answer health questions. If none of these apply, Medicare Advantage remains available to you with no health questions during any valid enrollment period. Don’t interpret one company’s rejection as the final word — and don’t navigate this alone. SHIP counselors handle exactly these situations for free.
First, confirm your state actually has a birthday rule — not all do. If you’re in California, Oregon, Idaho, Illinois, Maryland, Nevada, Oklahoma, Louisiana, Kentucky, Delaware, Indiana, Wyoming, Utah, Virginia, West Virginia, or New Mexico, check your state’s exact window timing (some start on your birthday, some on the first day of your birthday month, some extend 30–63 days). The birthday rule generally allows you to switch to a plan with equal or lesser coverage — meaning you can switch from Plan G to another Plan G, or from Plan G to Plan N, but typically not from Plan N to Plan G. This is designed to let you shop for lower premiums, not upgrade your coverage without underwriting. Act before the window closes — most birthday windows are 30–63 days and do not extend if you miss them.
The older you are, the more your premium increases may have accumulated — and the more carefully you need to approach switching, because underwriting scrutiny also increases with age and the health conditions that often come with it. Start with a free SHIP consultation to understand your current options under your state’s rules. If you’re in reasonable health, comparing rates with an independent broker costs nothing and can reveal significant savings. Also check whether you’re still on the right plan letter for your current healthcare usage — someone who was a frequent specialist-user at 65 may have different patterns at 75, or vice versa. The premium you locked in years ago may have been competitive then; it almost certainly isn’t the most competitive option in your market today.
This guide is for general informational purposes only and does not constitute insurance, legal, or healthcare advice. Medigap rules, state birthday rule protections, plan availability, and premium figures are subject to change. The Medicare Part B deductible of $283 and Part A deductible of $1,736 reflect 2026 CMS figures. Average premium figures cited ($220/month Plan G, $171/month Plan N at age 65) reflect national averages from published industry data and vary significantly by ZIP code, insurer, age, and tobacco use. The April 9, 2026 Plan N guaranteed issue restriction reflects information from insurer communications. State birthday rule changes for Delaware (January 2026), Indiana (January 2026), Virginia (July 2025), Utah (May 2025), and Wyoming (June 2025) reflect publicly available state legislation. Always verify current state rules with your State Health Insurance Assistance Program (SHIP) at shiphelp.org or 1-877-839-2675. All content is original and written independently.