What do insurance companies consider pre-existing conditions?

A pre-existing condition is a health issue, illness, or injury that you were diagnosed with, received treatment for, or experienced symptoms of before your new insurance coverage starts.

Common Examples

• Chronic conditions: Diabetes, asthma, cancer, and high blood pressure.
• Temporary or past issues: A previous surgery, a healed broken bone, or a past injury.
• Other diagnoses: Pregnancy, depression, or sleep apnea.

How Health Insurance Handles Pre-Existing Conditions

• Under the Affordable Care Act (ACA): For standard health insurance in the U.S., the Affordable Care Act legally prohibits insurance companies from denying you coverage, charging you higher rates, or refusing to treat your condition because of a pre-existing medical history.
• Other Insurance Types (Pet, Travel, or Disability): The rules under the ACA do not apply to all industries. For instance, pet insurance and travel policies frequently exclude pre-existing conditions or require a waiting period before covering them.

It is not hard to get standard health insurance with a pre-existing condition because the Affordable Care Act (ACA) makes it illegal for regulated health plans to deny coverage, charge higher rates, or exclude treatment for health issues you already have.

Health Insurance Protections

• Guaranteed Acceptance: ACA-compliant plans—such as those on the HealthCare.gov Marketplace, Medicaid, and most job-based plans—must accept every applicant.
• No Extra Costs: Insurers cannot charge you a higher monthly premium because of your medical history.
• Immediate Coverage: Benefits for chronic or past illnesses start on day one without waiting periods.

Plans to Avoid

• Non-ACA Plans: Short-term health plans or alternative insurance do not have to follow these rules and can deny you or refuse to cover your medical history.
• Grandfathered Plans: Very old individual plans purchased before March 2010 may also exclude pre-existing care.

Other Types of Insurance

• Life or Disability Insurance: Unlike health insurance, life and disability insurers can review your medical history and charge higher rates or deny coverage based on severe pre-existing conditions.

High blood pressure (hypertension), behavioral health disorders, and high cholesterol are the most common pre-existing health conditions affecting tens of millions of people.

A pre-existing condition is any medical issue, chronic illness, or previous diagnosis that existed before a new healthcare or insurance plan began.

Most Common Pre-Existing Conditions

According to data from the U.S. Department of Health and Human Services, the most prevalent conditions include:

• High blood pressure (Hypertension): Affects roughly 44 to 46 million people.
• Behavioral health and mental disorders: Includes depression and anxiety, impacting about 45 million people.
• High cholesterol (Hyperlipidemia): Affects around 44 million people.
• Asthma and chronic lung disease: Impacts about 34 million people.
• Osteoarthritis and joint disorders: Affects roughly 34 million people.
• Diabetes: Affects 13 million or more individuals.
• Heart conditions: Impacts roughly 16 million people.
• Cancer: Affects an estimated 11 million people with a prior history.

Other frequent conditions include sleep apnea, extreme obesity, epilepsy, and even past pregnancy.

Insurance and Coverage Rules

• ACA-Compliant Plans: Under the Affordable Care Act, marketplace and most standard health plans cannot deny you coverage, charge you more, or refuse to treat these common conditions.
• Short-Term or Non-ACA Plans: These alternative plans may still exclude pre-existing conditions or require waiting periods before providing care.

Insurance companies look back anywhere from 60 days to 10 years for pre-existing conditions, depending entirely on the type of insurance policy you have.

Breakdown by Insurance Type

• Health Insurance (ACA-Compliant):
  • 0 days (No look-back period): Under the Affordable Care Act, standard health insurance plans cannot deny coverage, charge higher rates, or use a look-back period for pre-existing conditions.
• Travel Insurance:
  • 60 to 180 days (standard) or 12+ months (comprehensive/medical): Travel insurers typically look back at a short window before you bought the policy to see if you received treatment, medication, or advice for a specific condition.
• Disability & Long-Term Care Insurance:
  • 3 to 12 months: These policies usually use a short look-back window just before your coverage starts to exclude disabilities related to recent medical issues.
• Life Insurance:
  • 3 to 10 years: Underwriters check prescription databases and medical history spanning several years to evaluate your overall health risk before approving a policy.
• Personal Injury / Auto Claims:
  • 5 to 10+ years: When evaluating an accident claim, adjusters may request extensive medical history to argue that your current pain stems from an older injury rather than the recent crash.

Under the Affordable Care Act (ACA), standard health insurance plans in the U.S. cannot refuse to cover, charge more for, or exclude any pre-existing health conditions like diabetes, cancer, asthma, or heart disease.

However, certain types of insurance and specific non-compliant plans can exclude pre-existing conditions or deny coverage entirely.

Plans That May Exclude Pre-Existing Conditions

• Short-term health plans: Temporary insurance policies often use medical history to deny coverage or exclude specific past diagnoses.
• Grandfathered health plans: Individual plans bought before March 2010 are exempt from ACA rules and can drop or refuse coverage for pre-existing issues.
• Travel insurance: Standard policies typically exclude routine care or flare-ups of chronic pre-existing illnesses unless you buy a specific waiver or rider.
• Life and disability insurance: These policies are not protected by the ACA and can deny coverage, charge higher rates, or impose waiting periods based on your medical history.

Common Conditions Flagged by Non-ACA Underwriters

If you apply for a plan that is not ACA-compliant (such as indemnity or short-term insurance), insurers commonly look back 6 to 12 months to exclude conditions such as:

• Diabetes
• Cancer
• Asthma
• Heart disease or high blood pressure
• Mental health disorders (like depression or anxiety)
• Pregnancy (for policies purchased after conception)