Diagnostic Code 9304 · 38 CFR §4.130
Neurocognitive disorder due to traumatic brain injury covers cognitive and behavioral changes resulting from a head injury sustained during military service. This diagnosis applies when a TBI causes lasting mental health symptoms such as memory impairment, difficulty concentrating, personality changes, irritability, or impaired judgment. Many veterans sustained TBIs from blast exposures (IEDs), vehicle accidents, falls, or combat injuries. While TBI itself may also be rated under the separate TBI rating criteria (38 CFR 4.124a), the associated mental health symptoms — when they are the predominant residual — are rated under DC 9304 using the General Rating Formula for Mental Disorders. The VA must avoid pyramiding by not rating the same symptoms under both the TBI and mental health criteria.
| Rating | Criteria |
|---|---|
| 0% | A diagnosis exists but cognitive and behavioral symptoms are not severe enough to interfere with occupational or social functioning, and no medication is required. |
| 10% | Mild or transient cognitive symptoms that decrease work efficiency only during periods of significant stress, or symptoms controlled by continuous medication. |
| 30% | Occasional decrease in work efficiency with intermittent inability to perform occupational tasks due to symptoms like mild memory loss, depressed mood, difficulty concentrating, anxiety, or chronic sleep impairment. |
| 50% | Reduced reliability and productivity due to cognitive symptoms such as difficulty understanding complex commands, impaired short-term memory, impaired judgment, disturbances of motivation and mood, and difficulty establishing effective work and social relationships. |
| 70% | Deficiencies in most areas including work, family relations, judgment, thinking, or mood. Symptoms may include suicidal ideation, impaired abstract thinking, significant memory impairment, near-continuous depression affecting independent functioning, impaired impulse control, spatial disorientation, neglect of personal appearance, and difficulty adapting to stressful circumstances. |
| 100% | Total occupational and social impairment due to severe cognitive decline. Symptoms may include gross impairment in thought processes or communication, persistent disorientation to time or place, severe memory loss including names of close relatives or own name, persistent danger of hurting self or others, and inability to perform basic activities of daily living. |
Documentation of the in-service TBI event is the foundation — this could be service treatment records showing a head injury, concussion diagnosis, blast exposure documentation, or incident reports. Post-service neuropsychological testing showing cognitive deficits is particularly strong evidence. Treatment records from neurology and psychiatry documenting ongoing symptoms are important. Brain imaging (CT or MRI) showing structural changes can support the claim, though many TBIs do not show on imaging. Buddy statements describing personality changes, memory problems, or behavioral changes observed after the injury event provide crucial corroborating evidence. Employment records showing declining performance after service can demonstrate occupational impairment.
You can receive ratings under both systems if they evaluate different symptoms. The TBI rating criteria cover specific facets like memory, concentration, and neurobehavioral effects. DC 9304 covers the overall mental health impact. The VA cannot rate the same symptoms under both — this is called pyramiding. Work with your VSO to determine the best approach.
Many combat TBIs went undocumented, especially blast exposures. Buddy statements from fellow service members who witnessed the event, evidence of exposure to blast events through unit records, and post-service medical evaluations showing cognitive deficits consistent with TBI can support the claim.
No. The VA rates based on your current level of disability, not the severity of the original injury. A mild TBI can result in significant long-term cognitive and behavioral symptoms that warrant a high rating.