Switching Medigap Plans: What Really Happens When You Apply

You've had the same Medicare Supplement plan for years and your rate keeps going up. Or you're thinking of moving from Plan F to Plan G. Here's what actually happens when you apply — and how to give yourself the best shot at approval.

SHORT ANSWER: In most states, switching your Medicare Supplement (Medigap) plan outside your one-time 6-month Open Enrollment window requires going through medical underwriting — a set of health questions that the insurance company uses to decide whether to accept you. The good news: about 3 out of 4 applications get approved. The key to approval is picking the right carrier for your specific health situation, answering the questions honestly, and knowing when to apply.

If you've been thinking about switching Medigap plans — either to save money, move from Plan F to Plan G, or leave a carrier whose rates keep climbing — this guide walks you through the actual process. We'll cover which conditions are usually fine, which ones tend to cause declines, how the application process works step-by-step, and a short list of state exceptions that let you skip underwriting entirely.

WHY UNDERWRITING EXISTS

Your one-time free pass ends fast

When you first become eligible for Medicare and enroll in Part B, you get a 6-month Medigap Open Enrollment window. During that window, any Medigap carrier must accept you regardless of your health — no questions asked, no denials. That's the free pass. After it closes, most states allow insurance companies to underwrite Medigap applications, meaning they can review your health and decide whether to insure you.

This catches a lot of people off guard. Many people assume they can switch Medigap plans any time, especially during the fall Annual Election Period. That's not true — AEP only applies to Medicare Advantage and Part D drug plans, not Medigap. Outside of your initial Open Enrollment (and a handful of Guaranteed Issue and state-specific exceptions we'll cover below), switching Medigap plans requires an underwritten application.

That doesn't mean you can't switch. It just means you'll answer some health questions, and the carrier will decide.

GUARANTEED ISSUE: THE EXCEPTIONS

When health questions don't apply

Before we get into underwriting, it's worth knowing that certain "Guaranteed Issue" (GI) situations skip health questions entirely. These are federal protections that let you buy specific Medigap plans regardless of your health, usually within a limited time window. The most common examples:

✓ You lost employer or retiree health coverage in the last 63 days.

✓ You tried a Medicare Advantage plan for the first time and want to switch back to Medigap within 12 months.

✓ You have a Medicare Advantage plan or Medicare SELECT plan and moved outside its service area.

There are a few other GI situations that come up less often. If you think one of these might apply to you, mention it before you assume you'll need underwriting — it can completely change your options. That's not the majority of the switches we help with, though. For most people considering a change, underwriting is the process — so let's focus there.

HOW HEALTH CONDITIONS AFFECT YOUR ODDS

The realistic picture on approvals and declines

Underwriting isn't a black box. Insurance companies are looking for signs that you're likely to be expensive to cover in the near future. Minor issues don't move the needle. Chronic, expensive, or unstable conditions do. Here's the general lay of the land:

USUALLY APPROVED. Well-controlled blood pressure, high cholesterol, seasonal allergies, minor arthritis, fully healed injuries, mild anxiety, and being a little over your ideal weight are typically non-issues. Most carriers don't flinch at these.

USUALLY DECLINED. Recent cancer treatment, recent stroke or TIA, congestive heart failure, kidney failure, dementia, MS, Parkinson's, rheumatoid arthritis, and pending major surgery are common auto-declines. Carriers view these as too expensive or too unpredictable to take on right now.

IT DEPENDS. Type 2 diabetes controlled with oral medication, cancer in long-term remission, old joint replacements, sleep apnea, controlled atrial fibrillation, and an old stent all fall into a gray zone. Some carriers will decline these outright; others will accept you. This is where working with a broker who knows the different carrier applications makes a real difference.

There's another category worth mentioning: pending surgeries and procedures. If you have anything scheduled — even something minor like a gallbladder removal — most carriers want you to complete it (and any follow-up) before they'll consider your application. The exception isn't the type of surgery; it's whether it's done.

THE APPLICATION PROCESS

What happens from start to approval

The whole thing usually takes 2 to 3 weeks from application to approval, and it follows a predictable path:

✓ Choose the right carrier. Every Medigap carrier writes its own application, and the questions vary. An experienced broker knows which carriers ask questions differently — so if you have, say, well-controlled diabetes, the broker can steer you toward a carrier whose application is more likely to accept you.

✓ Complete the application. Answer the health questions truthfully. Set the application's effective date 2 to 3 weeks in the future so there's time for underwriting to complete before your new coverage begins.

✓ The carrier pulls your records. They'll check your prescription history against national databases and look for auto-decline conditions or medications. This is why honesty on the application matters — if the meds tell a different story than your answers, you'll be denied.

✓ Phone interview with an underwriter. Someone from the carrier will call to verify a few things. Two rules for this call: keep your answers short and direct, and don't volunteer information they didn't ask for. Extra information offered is one of the more common reasons a good application gets declined.

✓ Approval — then cancel your old policy. Wait until you have written approval from the new carrier before you cancel anything. And know this: YOU must cancel your old policy. Your broker cannot do that for you. That rule exists to protect you from being canceled by mistake — but it also means it's on you to make the call once your new plan is approved.

STATE EXCEPTIONS — WORTH A LOOK

Some states let you switch without underwriting

A handful of states have their own rules that give Medigap enrollees additional windows to switch plans without going through health underwriting. The rules and time windows vary state by state and are subject to change — some are wide open, some are narrow, and most come with restrictions (like only switching to the same plan letter or to lesser coverage).

BIRTHDAY RULE STATES. In these states, you get a window around your birthday to switch Medigap plans with limited or no underwriting: California, Oregon, Maryland, Idaho, Illinois, Nevada, Louisiana, Oklahoma, Kentucky, Delaware, Utah, Virginia, Wyoming, West Virginia, New Mexico, and Indiana.

ANNIVERSARY RULE STATE. Missouri gives you a window around your Medigap policy anniversary date.

YEAR-ROUND OPEN ENROLLMENT (with state-specific rules). Connecticut, Massachusetts, Maine, New York, Vermont (some carriers), and Washington.

ANNUAL WINDOW. Rhode Island allows a guaranteed-issue window each fall (October 15 – December 7).

AGE-BASED WINDOW. Minnesota residents ages 65 to 70 have a one-time opportunity to switch — but a premium penalty applies for the life of the policy.

MA TRIAL RULE. Wisconsin lets people who left employer coverage for Medicare Advantage switch back to Medigap without underwriting within 12 months.

If you're in Texas (as most of our clients are), none of these state-specific rules apply — and underwriting is generally required outside of your initial Open Enrollment or a GI situation.

IF YOU'RE DECLINED — YOU STILL HAVE OPTIONS

A "no" from one carrier isn't a "no" from all of them

Getting declined by a Medigap carrier isn't the end of the road. There's no penalty for applying, and each carrier's underwriting is different — a decline from one company doesn't mean the next one will decline you too. Sometimes waiting a few months (for example, until a course of treatment is complete or a condition has stabilized) makes the difference between a decline and an approval.

If you truly can't pass underwriting anywhere right now, you have two realistic paths:

✓ Keep your current Medigap plan. It may not have the rate you'd hoped for, but you keep the same-carrier-any-provider flexibility.

✓ Consider Medicare Advantage. MA plans do not use health underwriting for enrollment. That means anyone can join a MA plan during the appropriate election period, regardless of health. The trade-offs are real (networks, prior authorizations, more moving parts), but for some people it's the right answer.

The most important thing: don't cancel your current Medigap coverage until you have written approval from the new carrier. This is one of the biggest and most avoidable mistakes we see.

HAVE QUESTIONS? WE'RE HERE.

Thinking about switching your Medigap plan? Give us a call before you apply. We know which carriers ask which questions, how each one weighs common conditions, and how to give you the best shot at approval — all at no cost to you.

Jamon White · TX Lic. 1316404 Four Oaks Medicare Planning 📞 512-298-5404 ✉️ jwhite@gofouroaks.com 🌐 gofouroaks.com

Disclaimer

Four Oaks Medicare Planning is not connected with the Federal Medicare Program or the Social Security Administration.