Can I be denied a Medicare Advantage plan for pre-existing conditions?

No. A Medicare Advantage plan cannot turn you down or charge you more for your health. A Medigap policy is where health history counts.

Updated September 3, 2026 · 3 min read · by Gerino Alejos

Key points

A Medicare Advantage plan cannot turn you down for your health, and it cannot charge you more for a condition you have.
Medigap, the policy that helps pay the share Original Medicare leaves you, works the other way in Texas, where a company can ask health questions.
Your protected Medigap window runs six months from when your Part B starts at or after 65, and no company can turn you down during it.

No. A Medicare Advantage plan, a private plan that covers your Medicare benefits, cannot deny you because of your health. It cannot charge you more for a condition you have.

You need Part A, the hospital part, and Part B, the part that pays for doctor visits. You also have to live in the plan's service area, the counties it covers.

Meet those and you can join during an enrollment window. Your medical history does not enter into it.

The one old exception, now gone

End stage renal disease (ESRD), permanent kidney failure, used to keep people out of most Advantage plans. That restriction was removed. Someone with ESRD can now enroll like anyone else.

What Advantage plans also cannot do

Make you wait before they cover a condition you already had.
Charge a higher premium, the monthly bill for the coverage, because of your diagnosis.
Drop you because you got sick or used a lot of care.
Refuse to cover a condition you had when you joined.

These protections are federal, and they apply to every Advantage plan.

Where health history does matter: Medigap underwriting

It matters for a Medicare Supplement policy, or Medigap, which you buy to help pay the share Original Medicare leaves you.

In Texas, outside a protected window, a Medigap company can ask health questions, charge you more, or turn you down.

Your window runs six months from when your Part B starts, at or after 65. During it, no company can turn you down or charge you more.
You also get guaranteed issue rights, meaning no company can turn you down, in certain cases. Two are your plan leaving the area, and a trial right in your first year on Advantage.
Outside those, underwriting applies, which means the company can look at your health history and say no.

So the answer is no for an Advantage plan, and yes for a supplement once your window closes. That is what to weigh at 65, because the Advantage choice is easy to make and harder to undo. See switching back.

What this means in practice

If you have serious health conditions, your timing changes your options.

Newly eligible, inside your six month window: every door is open. Take your time, because it does not come back.
Already on Advantage years later, with a diagnosis: Advantage plans stay open to you, and you can move between them. A supplement may not be offered on terms you can afford.

In that second case, look at Advantage plans with a wider network of doctors and hospitals. Look for a lower out of pocket maximum too, the yearly cap on what you pay for covered care.

Also check whether you qualify for a dual eligible plan, built for people who have both Medicare and Medicaid. See D-SNP plans.

What plans can do

A plan cannot deny you, but it can manage your care through prior authorization, referrals and network limits. Prior authorization means the plan approves a treatment before it pays. A referral is a note from your doctor before you see a specialist.

With a long term condition, those rules matter more than they do for a healthy person, and they are fair to ask about.

Ask how prior authorization works for your own treatments, and how long approvals take. See the honest downsides.

If you are not sure where you stand, bring us your dates. Call our McAllen office at (956) 687 3334, or enter your ZIP code in the plan pricing box on this page.

Common follow-up questions

Can a plan drop me if I get sick?

No. An Advantage plan cannot end your coverage because you used care or got a new diagnosis.

Is there a waiting period for pre-existing conditions?

No. Your coverage starts on your effective date, the day the plan begins, for everything the plan covers.

Why do supplements ask health questions when Advantage plans do not?

The rules are different for each. Medigap is guaranteed issue, so no company can turn you down, only during protected windows. Texas lets a company use underwriting outside them.

Want this looked at properly?

We are an independent agency in McAllen serving Hidalgo, Cameron and Starr counties. There is no obligation to talk it through.

Call (956) 687 3334

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