---
title: "DC 8108 - Narcolepsy"
diagnostic_code: "8108"
body_system: "Neurological Conditions and Convulsive Disorders"
cfr_section: "§ 4.124a"
canonical: "https://veteranai.co/va-rating-schedule/neurological/8108-narcolepsy"
source: "https://www.ecfr.gov/current/title-38/section-4.124a"
updated: "2026-07-21T21:25:20.436211Z"
---

# DC 8108 - Narcolepsy

Rated under § 4.124a. Body system: Neurological Conditions and Convulsive Disorders.

Rate as for epilepsy, petit mal.

General Rating Formula for Major and Minor Epileptic Seizures

## Rating criteria

| Rating | Criteria |
| --- | --- |
| 100% | Averaging at least 1 major seizure per month over the last year |
| 80% | Averaging at least 1 major seizure in 3 months over the last year; or more than 10 minor seizures weekly |
| 60% | Averaging at least 1 major seizure in 4 months over the last year; or 9-10 minor seizures per week |
| 40% | At least 1 major seizure in the last 6 months or 2 in the last year; or averaging at least 5 to 8 minor seizures weekly |
| 20% | At least 1 major seizure in the last 2 years; or at least 2 minor seizures in the last 6 months |
| 10% | A confirmed diagnosis of epilepsy with a history of seizures |

# Narcolepsy (VA Diagnostic Code 8108)

**Body System:** Neurological Conditions and Convulsive Disorders
**Regulation:** 38 CFR § 4.124a
**Rating Formula:** General Rating Formula for Major and Minor Epileptic Seizures

## Understanding This Condition

Narcolepsy is listed in the VA rating schedule under Diagnostic Code 8108. Under the VA's criteria, narcolepsy is **rated as for epilepsy, petit mal**. This means the condition is evaluated using the General Rating Formula for Major and Minor Epileptic Seizures, which measures the frequency and type of seizure activity documented over time.

Because narcolepsy is rated using the epilepsy formula, the VA groups the qualifying episodes into two categories — **major seizures** and **minor seizures** — and looks at how often each type occurs over specified time periods.

## Available Rating Levels

The VA assigns one of the following disability ratings based on documented seizure frequency:

| Rating | Criteria |
|--------|----------|
| **100%** | Averaging at least 1 major seizure per month over the last year |
| **80%** | Averaging at least 1 major seizure in 3 months over the last year; or more than 10 minor seizures weekly |
| **60%** | Averaging at least 1 major seizure in 4 months over the last year; or 9–10 minor seizures per week |
| **40%** | At least 1 major seizure in the last 6 months or 2 in the last year; or averaging at least 5 to 8 minor seizures weekly |
| **20%** | At least 1 major seizure in the last 2 years; or at least 2 minor seizures in the last 6 months |
| **10%** | A confirmed diagnosis of epilepsy with a history of seizures |

## What the VA Looks For

When evaluating narcolepsy under Diagnostic Code 8108, the VA focuses on:

- **The type of episodes** — whether they are classified as major seizures or minor seizures.
- **The frequency of major seizures** — measured over the last year, the last 6 months, or the last 2 years, depending on the rating level being considered.
- **The frequency of minor seizures** — measured on a weekly basis or over a 6-month period, depending on the rating level.
- **A confirmed diagnosis with a documented history** — which is the basis for the 10% level.

Because ratings under this code depend on documented frequency and type of episodes over defined time periods, the medical record and history of episodes play a central role in how the condition is evaluated.

Source: https://www.ecfr.gov/current/title-38/section-4.124a