IEP Basics · Eligibility & Law

The 13 IEP Eligibility Categories Explained in Plain English

To qualify for an IEP, a child must have a disability that falls into one of 13 categories under IDEA, and that disability must adversely affect their educational performance. Understanding the categories helps parents know where their child fits and how to push back when the school says they don’t qualify.

The Two-Part Eligibility Test

A disability category alone isn’t enough to qualify for an IEP. Under IDEA, two conditions must both be true:

1. The child has a disability that fits one of the 13 categories
2. The disability adversely affects educational performance, meaning the child needs specially designed instruction

The second requirement is where most disputes happen. Schools sometimes argue that a child with a diagnosis is “doing fine academically” and therefore doesn’t qualify, even when the child is clearly struggling to maintain grades, exhausting themselves to keep up, or failing to develop skills at a rate consistent with their potential. “Adversely affects educational performance” is broader than just failing grades.

The 13 IDEA Eligibility Categories

1. Autism Spectrum Disorder (ASD)

A developmental disability significantly affecting verbal and nonverbal communication and social interaction, generally evident before age 3. Eligibility requires documentation of impact on educational performance. Note: a school diagnosis of autism under IDEA does not require a medical diagnosis, but outside diagnostic reports are strong supporting evidence.

2. Deaf-Blindness

Combined hearing and visual impairments whose combined effects cause severe communication and other developmental and educational needs. This category is used when the level of support needed exceeds what a program serving only deaf or blind students would provide.

3. Deafness

A hearing impairment so severe that the child is impaired in processing linguistic information through hearing, with or without amplification, that adversely affects educational performance.

4. Emotional Disturbance (ED)

One of the most misunderstood categories. ED covers children with persistent emotional or behavioral characteristics including inability to learn that can’t be explained by intellectual, sensory, or health factors; inability to build and maintain relationships; inappropriate behaviors under normal circumstances; pervasive mood of unhappiness or depression; or physical symptoms related to school or personal problems. Anxiety, depression, OCD, and school refusal can all fall here if they’re significantly impacting school function.

5. Hearing Impairment

An impairment in hearing, permanent or fluctuating, that adversely affects a child’s educational performance. Includes children who are hard of hearing but not deaf under the IDEA definition.

6. Intellectual Disability (ID)

Significantly below-average general intellectual functioning existing concurrently with deficits in adaptive behavior (the practical skills of daily life), manifested during the developmental period, that adversely affects educational performance. Previously called “mental retardation” in federal law, Rosa’s Law (2010) mandated the current language.

7. Multiple Disabilities

The simultaneous occurrence of two or more disabilities whose combined effect causes educational needs that cannot be accommodated in a program designed for any one disability alone. Intellectual disability combined with blindness or orthopedic impairment are common examples.

8. Orthopedic Impairment (OI)

A severe orthopedic impairment that adversely affects educational performance. Includes impairments caused by congenital anomalies, disease, and other causes (e.g., cerebral palsy, amputations, fractures or burns that cause contractures).

9. Other Health Impairment (OHI)

One of the broadest and most frequently used categories. OHI covers limited strength, vitality, or alertness, including heightened alertness to environmental stimuli, that adversely affects educational performance due to a chronic or acute health problem. ADHD most commonly qualifies under OHI (the “heightened alertness” language was added specifically to address attention disorders). Anxiety, epilepsy, diabetes, Tourette’s, sickle cell disease, and many other conditions can qualify here too.

10. Specific Learning Disability (SLD)

The most commonly used IEP category. SLD covers disorders in one or more of the basic psychological processes involved in understanding or using language, spoken or written, that manifest as difficulty listening, thinking, speaking, reading, writing, spelling, or doing math calculations. Dyslexia, dyscalculia, dysgraphia, and processing disorders fall under SLD.

11. Speech or Language Impairment (SLI)

A communication disorder such as stuttering, impaired articulation, language impairment, or voice impairment that adversely affects educational performance. Children can receive speech-language services under this category without qualifying under any other category.

12. Traumatic Brain Injury (TBI)

An acquired injury to the brain caused by external physical force, resulting in total or partial functional disability or psychosocial impairment, or both, that adversely affects educational performance. Does not include brain injuries that are congenital or degenerative.

13. Visual Impairment Including Blindness

An impairment in vision, even with correction, that adversely affects educational performance. Includes both partial sight and blindness.

What If My Child’s Disability Doesn’t Seem to Fit?

Most children with diagnoses parents bring to schools do fit one of these categories, even if the connection isn’t immediately obvious. ADHD qualifies under OHI. Anxiety can qualify under OHI or ED depending on presentation. Autism spectrum disorder has its own category. Learning disabilities fall under SLD.

The harder question is usually not “which category” but “does the school agree the disability adversely affects education.” If you’re facing a denial, review your options after an eligibility denial, an advocate can often make the case for adverse educational impact that the school team missed.