ADA List of Disabilities: Qualifying Conditions and Exclusions

There is no official ADA list of disabilities. The Americans with Disabilities Act deliberately avoids naming specific conditions and instead uses a functional test: any physical or mental impairment that substantially limits one or more major life activities can qualify, regardless of its medical name.¹ That means hundreds of conditions can be covered, from cancer and diabetes to depression and dyslexia, so long as they affect the person seriously enough. What matters is the effect on your life, not the label on the diagnosis.

How the ADA Decides Whether a Condition Qualifies

Federal law uses a three-part definition. You are covered if you meet any one of the three:¹

You have a physical or mental impairment that substantially limits one or more major life activities.
You have a documented record of such an impairment, even if you no longer experience symptoms. This protects people in remission, including cancer survivors, from being penalized for medical history.
You are regarded as having such an impairment, whether or not you actually do. This prong targets discrimination based on stereotypes.

The “regarded as” prong has two limits worth knowing. It doesn’t entitle you to reasonable accommodations, only to protection from discriminatory treatment.² And it doesn’t apply to impairments that are both transitory (expected to last six months or less) and minor.¹

What “Substantially Limits” Means After 2008

For years after the ADA passed in 1990, courts read “substantially limits” so narrowly that people with serious impairments were told they didn’t qualify. The ADA Amendments Act of 2008 rewrote the rules of interpretation, and those rules matter more than any condition-by-condition list:¹

The definition must be interpreted in favor of broad coverage, to the maximum extent the statute allows.
An impairment that substantially limits one major life activity qualifies. It does not need to limit others.
Episodic conditions and conditions in remission count if they would substantially limit a major life activity when active. Epilepsy and bipolar disorder are typical examples.
Mitigating measures are ignored when deciding if you are substantially limited. Medication, prosthetics, hearing aids, mobility devices, assistive technology, and learned coping behaviors do not disqualify you. The only exception is ordinary eyeglasses and contact lenses.

That last rule catches people off guard. Before 2008, someone whose diabetes was well controlled by insulin could be told they weren’t substantially limited. Now the question is how the underlying condition would affect you without the medication. The same logic applies to ADHD managed with stimulants, depression managed with antidepressants, and epilepsy managed with anticonvulsants.

Physical Conditions That Commonly Qualify

Because there is no statutory list, the clearest guidance comes from federal enforcement agencies and court decisions. The conditions below appear repeatedly as examples that will almost always meet the ADA’s threshold:³

Cancer, which affects normal cell growth
Diabetes, which affects endocrine function
Epilepsy, which affects neurological function and qualifies even between seizures
HIV infection, which affects the immune system
Multiple sclerosis, which affects neurological function, mobility, and cognition
Muscular dystrophy, which progressively limits mobility and muscle function
Cerebral palsy, which affects motor function, coordination, and sometimes speech
Cystic fibrosis, which affects respiratory and digestive function

Mobility impairments requiring wheelchairs, prosthetics, or other assistive devices are the most recognized category, but the law reaches invisible conditions equally. Chronic pain, heart disease, kidney disease, and autoimmune conditions can all qualify when they substantially limit a major bodily function. The condition doesn’t have to be permanent, progressive, or externally visible.

Temporary Impairments

A common misconception is that only long-term or permanent conditions count. The ADA sets no minimum duration. A broken bone, surgical recovery, or acute back injury can qualify if it substantially limits a major life activity, and EEOC regulations confirm that impairments lasting fewer than six months can still be substantially limiting. An employer cannot dismiss an accommodation request just because your condition will resolve.

Mental Health Conditions That Commonly Qualify

Mental health conditions receive the same protection as physical ones when they substantially limit daily functioning. The EEOC has identified several that “should easily qualify”:⁴

Major depression, which often limits concentration, sleep, social interaction, and consistent work performance
Post-traumatic stress disorder, which can restrict concentration, sleep, and functioning in certain environments
Bipolar disorder, which affects thinking, concentration, and social interaction during manic or depressive episodes
Schizophrenia, which affects thinking, perception, and communication
Obsessive-compulsive disorder, which can substantially limit concentration, daily routines, and social interaction

The EEOC has said “many others will qualify as well.” Anxiety disorders, eating disorders, and personality disorders can all meet the threshold depending on severity. A diagnosis alone isn’t enough if symptoms are mild, but the bar is not total inability to function either. If the condition makes a major life activity significantly harder for you than for most people, that is usually enough under the ADAAA’s broad-coverage rule.

Cognitive, Learning, and Developmental Disabilities

Learning disabilities like dyslexia and attention-deficit/hyperactivity disorder are covered when they affect reading, concentrating, thinking, or learning, all of which are named as major life activities in the statute.¹ The mitigating measures rule applies, so ADHD managed with medication is assessed based on how it would affect you unmedicated.

Intellectual disabilities, marked by significant limitations in both intellectual functioning and everyday adaptive skills like communication and self-care, are protected.⁵ Autism spectrum disorder falls squarely within ADA coverage because it can substantially affect communication, social interaction, and concentration. Down syndrome, Tourette syndrome, and other developmental conditions qualify as well.

The Life Activities and Bodily Functions That Matter

Whether a condition qualifies turns on what it affects. The statute gives a non-exhaustive list split into two categories.¹

The first is everyday activities: caring for yourself, performing manual tasks, seeing, hearing, eating, sleeping, walking, standing, lifting, bending, speaking, breathing, learning, reading, concentrating, thinking, communicating, and working. If your impairment makes any of these substantially harder for you than for the general population, that can be enough.

The second, added in 2008, is major bodily functions: the immune system, normal cell growth, digestive, bowel, and bladder function, neurological and brain function, respiratory function, circulatory function, endocrine function, and reproductive function. This second category is what brings internal conditions like diabetes, Crohn’s disease, and kidney failure under the ADA even when the person looks perfectly healthy. Both lists use “including, but not limited to,” so courts can recognize activities and functions not specifically named.

Conditions the ADA Excludes

The statute carves out certain conditions that never qualify as disabilities, however severely they affect a person’s life. The exclusions fall into three groups:⁶⁷

Current illegal drug use, whether recreational or from dependence
Compulsive gambling, kleptomania, and pyromania
Pedophilia, exhibitionism, and voyeurism; the original statute also lists transvestism, transsexualism, and “gender identity disorders not resulting from physical impairments”

The last category has seen active legal development. Several federal courts, including the Fourth Circuit, have held that gender dysphoria is a distinct medical diagnosis from “gender identity disorder” as that term was understood in 1990, and therefore may not fall within the statutory exclusion. The outcome depends on the federal circuit.

The drug-use exclusion is narrower than it looks. The law explicitly protects people who have completed a supervised rehabilitation program and are no longer using, people currently in such a program and no longer using, and people incorrectly perceived as using but who are not.⁶ The exclusion targets current illegal use, not a history of substance use disorder.

What Qualifying Gets You

Meeting the ADA’s definition does more than protect you from being fired or refused service because of your condition. It also gives you the right to request reasonable accommodations at work, meaning changes to your environment or how the job is performed that let you do the essential functions of the position.⁸ Common examples include modified schedules, job restructuring, modified equipment, remote work when the essential functions allow it, readers or interpreters, and reassignment to a vacant position.⁹

You don’t need to mention the ADA or use any special phrasing when you ask. Telling your employer you’re having trouble with a specific task because of a medical condition is enough to start the process. Employers can require documentation of your functional limitations when the disability or need is not obvious, but they cannot demand your full medical records. An accommodation can be refused only if it would impose an “undue hardship,” meaning significant difficulty or expense given the employer’s size and resources.¹⁰

One boundary worth noting: qualifying under the ADA is not the same as qualifying for Social Security disability benefits or state disability programs. Those systems use their own definitions and their own eligibility rules. A condition that clearly qualifies you under the ADA may not entitle you to cash benefits, and vice versa.

1
Office of the Law Revision Counsel. 42 USC 12102 – Definition of Disability
2
Office of the Law Revision Counsel. 42 USC 12201 – Rule of Construction
3
ADA.gov. Introduction to the Americans with Disabilities Act
4
U.S. Equal Employment Opportunity Commission. Depression, PTSD, and Other Mental Health Conditions in the Workplace: Your Legal Rights
5
U.S. Equal Employment Opportunity Commission. Persons with Intellectual Disabilities in the Workplace and the ADA
6
Office of the Law Revision Counsel. 42 USC 12210 – Illegal Use of Drugs
7
Office of the Law Revision Counsel. 42 US Code 12211 – Definitions
8
Office of the Law Revision Counsel. 42 USC 12112 – Discrimination
9
U.S. Equal Employment Opportunity Commission. Enforcement Guidance on Reasonable Accommodation and Undue Hardship Under the ADA
10
Office of the Law Revision Counsel. 42 USC 12111 – Definitions