Listing 11.02: Epilepsy Despite Three Months of Care

Qualifying for Social Security Disability Insurance under Blue Book Listing 11.02 requires documenting persistent seizures that continue despite at least three consecutive months of prescribed treatment. The Social Security Administration evaluates epilepsy by applying strict frequency counts to medical records and corroborating seizure logs under 20 CFR Part 404, Subpart P, Appendix 1.

The Centers for Disease Control and Prevention reported in 2021 that approximately 2.9 million adults in the United States live with active epilepsy. While many individuals control their episodes through medication, others experience drug-resistant seizures that prevent sustained work. Listing 11.02 provides a path to disability approval at Step 3 of the sequential evaluation process when standard therapies fail to control disabling episodes.

Understanding the Structure of Listing 11.02

Listing 11.02 falls under Section 11.00 of the Blue Book, which governs neurological disorders in adults. SSA revised these listings in a final rule published at 81 FR 43048, establishing specific benchmarks for convulsive and non-convulsive seizure disorders.

Epilepsy cannot be evaluated on diagnostic imaging or office visits alone. SSA requires objective proof that seizures occur at defined intervals while you comply with prescribed medical care. Section 11.00H sets out the detailed rules adjudicators follow when reviewing records, clinical notes, and witness accounts.

The listing recognizes two primary clinical seizure types. The first type is generalized tonic-clonic seizures, previously termed grand mal seizures. The second type is dyscognitive seizures, formerly referred to as complex partial seizures.

The Four Frequency Thresholds of Listing 11.02

A claimant can satisfy Listing 11.02 by meeting any one of four distinct criteria, labeled A through D:

• Listing 11.02A requires documented generalized tonic-clonic seizures occurring at least once a month for at least three consecutive months despite treatment adherence.
• Listing 11.02B requires documented dyscognitive seizures occurring at least once a week for at least three consecutive months despite treatment adherence.
• Listing 11.02C covers generalized tonic-clonic seizures occurring at least once every two months for at least four consecutive months despite treatment adherence, plus a marked limitation in one functional area under Section 11.00G.
• Listing 11.02D covers dyscognitive seizures occurring at least once every two weeks for at least three consecutive months despite adherence, plus a marked limitation in one functional area under Section 11.00G.

The five functional areas under Section 11.00G include physical functioning, understanding or remembering or applying information, interacting with others, concentrating or persisting or maintaining pace, and adapting or managing oneself. A marked limitation means functioning independently, appropriately, and effectively on a sustained basis is seriously impaired.

The Three-Month Treatment Adherence Rule

The core requirement of Listing 11.02 is that seizures must persist despite adherence to prescribed treatment. Section 11.00C defines adherence as following a physician treatment plan for at least three consecutive months.

SSA does not consider seizures disabling under the listing if they result from unexcused failure to follow prescribed therapies. Adjudicators verify compliance through pharmacy fill histories, physician progress notes, and blood drug levels when available. A continuous record showing regular prescription refills establishes your baseline adherence.

Section 11.00H4b establishes a timing restriction. The consecutive counting period cannot begin earlier than one month after starting a newly prescribed treatment. This window gives medication adequate time to achieve therapeutic levels before SSA measures ongoing seizure frequency.

If a claimant alters treatment, SSA evaluates whether good cause exists under 20 CFR 404.1530(c) and Section 11.00H4d. Good cause includes severe adverse drug side effects documented by a physician, cognitive barriers, or an inability to afford medication when no free community clinics exist. Without documented good cause, unexcused treatment gaps disrupt the required three-month continuity.

Mandatory Seizure Counting Rules Under Section 11.00H4

The Social Security Administration uses precise arithmetic rules when tabulating seizure frequency under Section 11.00H4:

• Multiple seizures occurring within a single 24-hour period count as one seizure toward the listing threshold. Even if a claimant has three seizures in one day, SSA counts the cluster as a single episode.
• Status epilepticus counts as a single seizure event. Status epilepticus involves prolonged seizures or consecutive episodes without regaining consciousness between them.
• A dyscognitive seizure that evolves into a generalized tonic-clonic seizure counts exclusively as a generalized tonic-clonic seizure.
• Psychogenic nonepileptic seizures are not evaluated under Listing 11.02. Under Section 11.00H1, these episodes are evaluated under Section 12.00 mental disorders listings, specifically somatic symptom disorders under Listing 12.07.

Clinical Descriptions and the Evidentiary Weight of a Seizure Log

Under Section 11.00H2, SSA requires at least one detailed description of a typical seizure from an observer. Because seizures rarely occur in a doctor office, adjudicators rely heavily on witness statements from family members or coworkers.

A complete clinical seizure description details the physical characteristics of typical events. It describes warning auras, loss of consciousness, convulsions, tongue biting, incontinence, and duration. The statement must also describe the postictal state, noting confusion, lethargy, or headaches that follow.

Claimants should maintain a comprehensive seizure log to support their claim. A detailed log records the exact date, time, estimated duration, suspected triggers, and recovery time for every episode. Observer signatures add credibility to each entry.

Adjudicators compare the seizure log against treating physician progress notes and emergency room records. Section 11.00H3 clarifies that SSA does not require or purchase blood drug levels, but evaluates them if already present. Section 11.00H5 states that an abnormal electroencephalogram (EEG) is not required to establish a claim, though existing EEG tracings provide valuable diagnostic confirmation.

Qualifying via Residual Functional Capacity

Claimants whose seizure frequency falls short of Listing 11.02 thresholds can still qualify through a Residual Functional Capacity (RFC) assessment. Under 20 CFR 404.1545, SSA evaluates the maximum physical and mental work activities you can sustain despite your impairments.

An RFC for epilepsy focuses on non-exertional and environmental restrictions. Typical precautions restrict claimants from working at unprotected heights, operating dangerous moving machinery, commercial driving, or working near open water. Under Social Security Ruling 85-15, environmental restrictions eliminate whole categories of industrial and transportation jobs.

In addition to safety hazards, postictal recovery periods often cause work-preclusive limitations. Claimants who require hours of rest or experience cognitive slowing cannot maintain standard attendance. Vocational expert testimony confirms that unscheduled absences exceeding one day per month or off-task time exceeding 10 to 15 percent eliminates competitive work.

At Step 4 of the sequential evaluation process under 20 CFR 404.1520(f), SSA determines whether your RFC permits past relevant work. Following the 2024 rule update in 20 CFR 404.1560(a)(1) and Social Security Ruling 24-2p, SSA reviews only past work performed within the prior five years. If past work is precluded, SSA moves to Step 5 under 20 CFR 404.1520(g) to determine whether other work exists, considering age, education, and the Medical-Vocational Guidelines in 20 CFR Part 404, Subpart P, Appendix 2.

Non-Medical Eligibility Criteria in 2026

Meeting the medical standards under Listing 11.02 is only one part of an SSDI claim. Claimants must also satisfy technical, non-medical requirements established by federal law.

Under 20 CFR 404.130, you must have earned sufficient work credits to achieve insured status on your alleged onset date. Most adult workers must satisfy the 20/40 rule, requiring 20 credits during the 40 quarters immediately preceding disability onset. In 2026, a worker earns one credit for each $1,810 of covered earnings, up to four credits per year.

Claimants must not engage in substantial gainful activity (SGA) under 20 CFR 404.1574. In 2026, the monthly SGA threshold is $1,690 for non-blind individuals and $2,830 for individuals who are statutorily blind. Working above these limits results in a technical denial at Step 1 regardless of medical severity.

Your condition must also satisfy the statutory duration requirement under 20 CFR 404.1509, lasting or expected to last continuously for at least 12 months. Application mechanics and the appeals process are distinct administrative phases covered in separate resources and are outside the scope of this article.

Frequently Asked Questions

What seizure frequency is required to meet Listing 11.02? Generalized tonic-clonic seizures must occur at least once a month for three consecutive months, or once every two months for four consecutive months with a marked functional limitation. Dyscognitive seizures must occur at least weekly for three consecutive months, or once every two weeks for three consecutive months with a marked functional limitation.

Why does SSA require three months of treatment before counting seizures? Under Section 11.00C and 11.00H4, SSA requires three consecutive months of adherence to prescribed treatment to confirm that the epilepsy resists standard medication. Seizures occurring during periods of unexcused non-adherence or during the first month of a new regimen are excluded from the listing count.

What makes a seizure log credible to the Social Security Administration? A credible seizure log includes precise dates, times, seizure manifestations, postictal recovery periods, and corroborating statements from third-party witnesses who observed the episodes. Detailed notes from treating neurologists and pharmacy refill records provide the objective medical foundation SSA requires.

This article is general information about Social Security Disability Insurance eligibility, not legal advice. Program rules, earnings limits, and evaluation standards change over time, and every situation is different. Consult a qualified representative or contact the Social Security Administration directly for guidance on your specific claim.