If you have a health condition already, you may wonder if Medicare will still help pay for your preexisting condition care. Yes. Medicare can cover care for preexisting conditions. Once you’re enrolled, Medicare doesn’t “hold your condition against you.” Medicare looks at the service you need and will see if they cover it and consider it medically necessary. Your costs and rules can change based on the type of Medicare coverage you choose.
What do I need to know about preexisting conditions?
Medicare can cover care you need for an ongoing or long-term preexisting condition. Original Medicare and Medicare Advantage plans don’t turn you away because of your health history. Medigap rules can depend on timing, so when you apply may matter.
What are preexisting conditions?
A preexisting condition is a health problem you had before your health coverage started. It can be something you still have or something you had in the past. Examples include:
- Asthma
- Diabetes
- High blood pressure
- Heart disease
- Arthritis
- Cancer (past or current)
- Depression or anxiety
A preexisting illness won’t prevent you from enrolling in Medicare if you qualify. After you enroll, Medicare rules are based on the service you need, not on when your condition started.
Compare Medicare plans and find coverage that supports your ongoing health needs
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Yes. Original Medicare (Part A and Part B) can cover care for preexisting conditions. There’s no waiting period for care with Original Medicare when you have a preexisting condition.
Original Medicare can help pay for many covered services, such as:
- Doctor and specialist visits
- Lab tests and imaging
- Hospital stays
- Outpatient mental health care
Your condition being “preexisting” doesn’t change whether Medicare covers these services. But Original Medicare doesn’t cover every kind of care. For example, it usually doesn’t cover routine dental, vision or hearing care, and it doesn’t include most outpatient prescription drugs.
If you want a quick overview of what Medicare covers and doesn’t cover, read: Medicare health benefits you can expect and benefits you may be surprised about.
If you take drugs for a long-term condition, you may also want to learn about Medicare drug coverage (Part D). Drug plans have a drug list (formulary). Some drugs may have rules, like prior authorization, step therapy or quantity limits.
Medicare coverage checklist: Get the care you need
- Ask if your doctor or facility accepts Medicare.
- Ask what service or test is being ordered and why it’s needed.
- If you have an Aetna® Medicare Advantage plan, ask if you need a referral or prior authorization.
- If you take prescription drugs, check your Aetna Medicare plan’s formulary and pharmacy rules.
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Yes. You can join a Medicare Advantage plan even if you have a preexisting condition. These plans must cover the same Part A and Part B services as Original Medicare.
Medicare Advantage plans have plan rules. For example, they may use a provider network, and some services may need prior authorization. That’s why it helps to check the details before you join.
If you have a chronic condition, here are a few things to check when you compare plans:
- Are your doctors and hospitals in the network?
- Do you need referrals to see specialists?
- Do your tests or treatments need prior authorization?
- If the plan includes drug coverage, are your drugs on the formulary?
Plan costs can vary. Your health history shouldn’t be the reason you’re charged more, but your total costs can still depend on the plan and the care you use.
If you travel or live in more than one state, Original Medicare can be easier because it works nationwide with any provider who accepts Medicare. Some Medicare Advantage plans have a local service area, so it helps to check how the plan handles care when you’re away from home.
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Yes. Chronic Condition Special Needs Plans (C-SNPs) are Medicare Advantage plans designed specifically for people who already have certain severe or disabling chronic conditions. To enroll in a C-SNP, you must have a qualifying chronic condition. That means preexisting conditions are not only covered, they are required for eligibility.
Like other Medicare Advantage plans, C-SNPs include all the benefits covered under Medicare Part A and Part B, such as hospital care, doctor visits and outpatient services. These plans also include prescription drug coverage (Part D), which helps pay for medications used to treat ongoing conditions.
C-SNPs focus on care that supports people with chronic health needs. This can include disease management programs, coordinated care with specialists and personalized treatment plans designed around your condition. Some plans may also offer added benefits, such as dental, vision, hearing or other services that help support your health.
If you live with a qualifying chronic condition, a C-SNP may provide more coordinated care and benefits tailored to your specific needs.
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Preexisting conditions don’t change your right to enroll. But timing can affect when your coverage starts and what choices you have. Signing up on time can help you avoid gaps in coverage when you need care.
Here are a few common enrollment windows and what they may mean for coverage start dates:
- Initial Enrollment Period (IEP): 7-month window around your 65th birthday (3 months before, your birthday month and 3 months after).
- Annual Enrollment Period (AEP): October 15–December 7 each year.
- Medicare Advantage Open Enrollment Period: January 1–March 31.
- Medigap Open Enrollment Period: 6-month window starting when you’re 65 or older and enrolled in Part B.
Special Enrollment Period (SEP): Varies based on qualifying life events. If you delay signing up for Part B when you don’t have other qualifying coverage, you may have to wait to enroll and could pay a late enrollment penalty. That can be a problem if you need regular care for an ongoing condition.
Bottom line: Medicare can cover care for preexisting conditions. The main differences are how you get care, what rules apply and what you may pay.
Want to explore plan costs and benefits in your area? Shop for Medicare plans near you
Are there waiting periods or restrictions for preexisting conditions?
Original Medicare and Medicare Advantage plans don’t have waiting periods for preexisting conditions. Once your coverage starts, you can get covered care for conditions you already have. Original Medicare and Medicare Advantage can’t deny coverage or raise costs based on health history.
You may still run into normal coverage rules. For example, Medicare-covered care generally must be medically necessary. And Medicare Advantage plans can have rules like networks, referrals and prior authorization.
Medigap (Medicare Supplement) plans typically have waiting periods. Medigap helps pay some out-of-pocket costs that Original Medicare doesn’t pay. Some Medigap plans can have a limited waiting period for costs tied to a preexisting condition, depending on your timing and your prior coverage.
In many cases, you can avoid or shorten that waiting period if you had at least 6 months of continuous “creditable coverage” before you applied. During your one-time Medigap Open Enrollment Period, insurers can’t deny you coverage or charge you more because of preexisting health problems. After that window, your choices and cost may depend on your state and your situation.
Also remember: Medicare rules are about the service, not the condition. If Medicare doesn’t cover a service, it won’t be covered for any condition, even if the condition is serious or ongoing.
Disclaimers
The Aetna C-SNP is available to Medicare members who have at least one of the qualifying chronic conditions. To ensure a successful enrollment process, we’ll confirm with your healthcare provider that you have one of these eligible conditions. If verification of eligible condition is not received, involuntary disenrollment will occur.
This material is for informational purposes only and is not medical advice. Health information programs provide general health information and are not a substitute for diagnosis or treatment by a physician or other health care professional. Contact a health care professional with any questions or concerns about specific health care needs. Providers are independent contractors and are not agents of Aetna. Provider participation may change without notice. Aetna is not a provider of health care services and, therefore, cannot guarantee any results or outcomes. The availability of any particular provider cannot be guaranteed and is subject to change. Information is believed to be accurate as of the production date; however, it is subject to change. For more information about Aetna plans, refer to our website.