Does Health Insurance Cover Preexisting Conditions?

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Under the Affordable Care Act (ACA), almost all health insurance companies are required to insure individuals with preexisting conditions and cover treatments related to those conditions without charging higher premiums. That said, your health insurance may not cover preexisting conditions if you have a grandfathered plan or a type of coverage that isn’t regulated by the ACA.

Continue reading to learn more about preexisting conditions and health insurance, including what types of health plans may make the most sense if you already have a serious disease or injury.

Key Takeaways

  • A preexisting condition is any major health condition you have before your health insurance coverage begins, such as cancer, diabetes, pregnancy or depression.
  • Most ACA-compliant health insurers cannot reject you or charge you higher rates for health benefits because of a preexisting medical condition, nor can they decline to cover treatments for such conditions.
  • The only type of ACA-compliant insurance that may exclude preexisting condition health coverage is a grandfathered plan that you purchased for yourself rather than through your employer before March 23, 2010.
  • Preexisting conditions may also be excluded from coverage by health plans that aren’t regulated by the ACA, such as short-term and travel medical plans.

What Is a Preexisting Condition?

In the context of health insurance, a preexisting condition is an illness, injury or other circumstance necessitating medical attention that someone has before their health plan takes effect.[1] For example, if an uninsured individual is diagnosed with diabetes and decides to purchase health insurance to help cover their medical costs, their diabetes would be considered a preexisting condition.

However, if an individual who already has insurance is diagnosed with diabetes, it would not count as a preexisting condition.

Preexisting conditions are relevant for health insurance providers because they may be predictors of future health care spending. For example, a health insurance company may expect to spend more on treatments for someone with a known illness or injury than for someone who has only enrolled in a health plan as a precaution.

How Are Preexisting Conditions Determined?

Usually, an individual must be actively experiencing a certain health problem for it to qualify as a preexisting condition. That said, some insurance companies may consider a healthy person to have a preexisting condition if they were previously treated for a serious disease, such as a cancer with a high recurrence rate.[2]

Examples of Preexisting Conditions

Preexisting conditions are generally significant chronic illnesses, but the term can also refer to comparatively minor physical and mental ailments or other factors that impact your health. Examples of common preexisting conditions include the following:[2][3][4]

Heart disease Cancer Diabetes
Asthma High blood pressure Arthritis

High cholesterol

Obesity

Seasonal allergies

Acne AIDS/HIV Epilepsy
Pregnancy Lupus Depression
Anxiety Sleep apnea  

Does Health Insurance Cover Preexisting Conditions?

Nearly all ACA-compliant health insurance plans are required by law to cover health care related to the treatment of existing conditions.[5] The main exception is individual grandfathered plans — that is, plans purchased before the ACA was signed into law on March 23, 2010. If you have not changed health plans since 2010 or earlier, your insurance carrier may not be required to cover care for chronic conditions you have had since before you joined your plan.[1]

What Types of Health Insurance Cover Preexisting Conditions?

All major medical insurance plans regulated by the federal government — except for grandfathered plans — must offer coverage for preexisting conditions.[1] Examples of ACA-compliant health insurance include the following:[6]

  • Marketplace health insurance
  • Most off-Marketplace plans from private insurers
  • Medicare
  • Medicaid
  • Children’s Health Insurance Program (CHIP)
  • University-sponsored student health insurance
  • Employer-sponsored group health insurance
  • TRICARE
  • Small Business Health Options Program (SHOP) insurance

If you have a preexisting condition and are shopping for coverage on the Health Insurance Marketplace, you may want to consider enrolling in a gold or platinum plan. While plans in this tier typically have high premiums, they don’t require you to pay as much in deductibles, copays or coinsurance when you receive care, which may be advantageous if you need regular treatments for your condition.[7]

health insurance plan categories

Can I Be Denied Health Insurance if I Have a Preexisting Condition?

ACA-compliant health insurance companies cannot deny coverage to someone due to their preexisting condition, nor can they require them to pay a higher monthly premium. In addition, your rates can’t go up based on your health status or health care usage after you join a plan.[5] This separates health coverage from many other types of insurance — like home and auto — which may be more expensive if your insurer views you as a high risk to file a claim.

By some estimates, as many as half of all nonelderly Americans have a preexisting condition, making these protections beneficial for a significant percentage of the population.[2]

How To Get Health Coverage for Preexisting Conditions

Though it’s not hard to find a health plan that will cover preexisting conditions, you should compare quotes from at least three to five different insurance companies to find the most affordable option available. Unfortunately, it can be complicated and time-consuming to collect and parse through multiple insurance quotes.

For the simplest process possible, you should shop through SmartFinancial. All you have to do is answer a few questions about the type of coverage you need, and then we’ll connect you with agents who are prepared to help you find the best health plan considering your budget and circumstances. Start your online questionnaire and compare health insurance quotes for free today!

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FAQs

Is pregnancy considered a preexisting condition?

Yes, pregnancy may be considered a preexisting condition.[3]

Which health insurance plans can exclude preexisting conditions?

Individual grandfathered health plans purchased before March 23, 2010, may exclude coverage for preexisting conditions.[1] In addition, plans that don’t meet the ACA’s minimum essential coverage standards — such as short-term health insurance plans — are exempt from the requirement to cover preexisting conditions.[8]

What is the waiting period for preexisting diseases?

Providers of Medicare Supplement Insurance — also known as Medigap — may impose a six-month waiting period on care related to preexisting conditions. However, this only applies if you were not insured for at least six months in a row before buying your Medigap policy.[9]

What is a preexisting condition look-back period?

A look-back period refers to the portion of your medical history that a travel insurance company may look at to determine if you have a preexisting condition, which likely won’t be covered by your travel medical insurance. Look-back periods typically range from three to 18 months before the purchase of your travel insurance policy.[10]

Sources

  1. United States Department of Health and Human Services. “Can I Get Coverage if I Have a Pre-Existing Condition?” Accessed May 27, 2025.
  2. Centers for Medicare & Medicaid Services. “At Risk: Pre-Existing Conditions Could Affect 1 in 2 Americans.” Accessed May 27, 2025.
  3. KFF. “Pre-Existing Conditions: What Are They and How Many People Have Them?” Accessed May 27, 2025.
  4. Cigna Healthcare. “What Is a Pre-Existing Condition?” Accessed May 27, 2025.
  5. HealthCare.gov. “Marketplace Health Plans Cover Pre-Existing Conditions.” Accessed May 27, 2025.
  6. HealthCare.gov. “Qualifying Health Coverage - Glossary.” Accessed May 27, 2025.
  7. HealthCare.gov. “Health Plan Categories: Bronze, Silver, Gold & Platinum.” Accessed May 27, 2025.
  8. UnitedHealthcare. “Short Term Health Insurance | Individuals & Families.” Accessed May 27, 2025.
  9. KFF. “Medigap May Be Elusive for Medicare Beneficiaries With Pre-Existing Conditions.” Accessed May 27, 2025.
  10. Generali Travel Insurance. “Pre-Existing Conditions & Travel Insurance: 5 Myths.” Accessed May 27, 2025.

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