Enrique Rivera

Millions of Americans live with pre-existing conditions, and these conditions often require health care. Can Medicare plans or coverage change if you have pre-existing conditions?

Under the Affordable Care Act (ACA), insurance companies for people under 65 are not allowed to deny you coverage or charge you more just because you have a pre-existing condition. This rule is in place to make sure that everyone has access to health insurance, regardless of their health history.

However, when you reach age 65 and become eligible for Medicare, things change a bit. Medicare is a federal health insurance program primarily for older adults, and it operates differently from private insurance:

1. **Guaranteed Issue**: When you first become eligible for Medicare, you have what’s called a “guaranteed issue” right. This means that insurance companies that offer Medicare Supplement (Medigap) plans cannot deny you coverage or charge you higher premiums based on pre-existing conditions during your initial enrollment period.

2. **Medicare Advantage Plans**: If you choose to enroll in a Medicare Advantage plan (Part C), these plans also can’t refuse you coverage because of pre-existing conditions. They must cover all the services that original Medicare covers.

3. **Prescription Drug Coverage**: Medicare Part D, which covers prescription drugs, also can’t deny you coverage based on pre-existing conditions. However, it’s essential to enroll in a Part D plan when you’re first eligible to avoid potential penalties.

So, in general, Medicare doesn’t discriminate against you for having pre-existing conditions when you first enroll. You have options for getting coverage, and your health history won’t prevent you from accessing Medicare benefits.


Pre-existing conditions is a term used to describe any health condition you have before your health coverage begins. These conditions can range from serious chronic illnesses like cancer or heart disease to less severe ones like obesity or even pregnancy.

Before the Affordable Care Act (ACA), private health insurance companies could deny coverage or charge higher premiums to people with pre-existing conditions. Their reasoning was that these individuals might need more medical care, and insurance companies wanted to limit their costs. This created problems for millions of Americans who either couldn’t get coverage or had to pay a lot more for it.

However, thanks to the ACA, which became law in 2010, insurance companies are no longer allowed to deny coverage or charge extra based on pre-existing conditions for new enrollees. This important change made it possible for many people to access health insurance regardless of their health history. It’s a significant step toward ensuring that everyone can get the healthcare they need.


The protections provided by the Affordable Care Act (ACA) extend to Medicare coverage and plans as well. Whether you’re looking at Original Medicare (Parts A and B), Medicare Advantage (Part C), or prescription drug plans (Part D), you won’t be denied enrollment, and insurance companies can’t charge you more because of pre-existing conditions.

This is a huge relief for many people, especially considering that a significant percentage of Americans between the ages of 55 and 64 have pre-existing conditions. It ensures that those approaching Medicare eligibility or those who qualify for Medicare due to Social Security Disability Insurance (SSDI) or certain medical conditions like ALS or End-Stage Renal Disease (ESRD) can still access the healthcare coverage they need.

Without these protections, many Medicare beneficiaries could find themselves without affordable coverage, which would be a real hardship. So, these rules make sure that people with pre-existing conditions can still get the Medicare coverage they deserve.


Medicare Supplements (Medigap plans), which provide supplemental coverage to Original Medicare, have their own rules when it comes to pre-existing conditions. Here’s how it works:

1. **Medigap Open Enrollment Period**: When you first become eligible for Medicare, you have a six-month window called the Medigap Open Enrollment Period. During this time, you can enroll in any Medigap plan, and insurance companies can’t charge you more or deny your enrollment based on pre-existing conditions. This is the best time to sign up for a Medigap plan.

2. **Post-Open Enrollment Period**: If you try to enroll in a Medigap plan outside of your Medigap Open Enrollment Period and don’t have a guaranteed issue right (special circumstances that allow you to enroll), insurance companies can use medical underwriting exam. This means they can consider your health status and may charge you more or deny your enrollment based on pre-existing conditions.

The reason Medigap plans have different rules from other types of insurance is because they are considered supplemental coverage. They are designed to help cover the out-of-pocket costs of Original Medicare, so they aren’t considered “minimum essential coverage” under the Affordable Care Act (ACA). Minimum essential coverage plans, like Medicare Part A and B, must follow the ACA’s pre-existing condition rules.

So, enrolling in a Medigap plan during your Medigap Open Enrollment Period is crucial to ensure you have access to the plan you want without worrying about pre-existing conditions affecting your coverage or costs.

Primary forms of Medicare, like Parts A and B, do provide coverage for pre-existing conditions without charging you more or denying your enrollment based on those conditions. This ensures that your health coverage is not impacted by your pre-existing conditions.

While Medigap plans may have different rules regarding pre-existing conditions, it’s important to be aware of the specific enrollment periods, like the Medigap Open Enrollment Period, during which you can enroll without worrying about pre-existing conditions affecting your coverage or costs.

Always remember that your health is unique, and what’s best for you may be different from others. If you have questions about your health coverage, pre-existing conditions, or any changes you’re considering, it’s a good idea to consult with your primary care physician or a healthcare expert. They can provide personalized guidance to help you make the right decisions for your health. Your health is a top priority, so make sure you’re well-informed and getting the best care possible!

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