Diagnostic Code 9310 · 38 CFR §4.130
Unspecified neurocognitive disorder is diagnosed when significant cognitive decline is present but the underlying cause has not been determined or does not fit neatly into another neurocognitive category. Veterans may receive this diagnosis when cognitive testing reveals deficits in memory, attention, executive function, or processing speed, but the exact etiology is unclear — it could involve multiple contributing factors including toxic exposure, head injuries, vascular changes, or other causes. This diagnosis is sometimes used when a veteran clearly has cognitive impairment but the specific cause requires further investigation. The VA rates it under the General Rating Formula for Mental Disorders.
| Rating | Criteria |
|---|---|
| 0% | A diagnosis exists but cognitive symptoms do not interfere with occupational or social functioning. |
| 10% | Mild cognitive symptoms that decrease work efficiency only during significant stress, or controlled by compensatory strategies. |
| 30% | Occasional decrease in work efficiency due to memory problems, difficulty concentrating, depressed mood, or mild confusion. |
| 50% | Reduced reliability due to moderate cognitive decline affecting task completion, judgment, complex instructions, and relationships. |
| 70% | Deficiencies in most areas due to significant cognitive impairment. May include disorientation, inability to manage daily tasks independently, and near-continuous anxiety or depression about cognitive decline. |
| 100% | Total occupational and social impairment with severe cognitive deficits, disorientation to time and place, inability to perform daily activities, severe memory loss, and need for supervision. |
Neuropsychological testing documenting cognitive deficits is the strongest evidence. A clinical evaluation establishing the neurocognitive disorder diagnosis is required. Medical records showing potential contributing causes — toxic exposure records, head injury history, cardiovascular risk factors — help build the nexus to service. Buddy statements from family describing observable cognitive decline in daily functioning are important. Employment records showing declining performance due to cognitive issues add corroboration.
If possible, yes. A specific diagnosis like neurocognitive disorder due to TBI (DC 9304) or due to a known physiological condition (DC 9301) can make the nexus to service clearer. However, an unspecified diagnosis does not prevent you from receiving a rating — the criteria are the same.
It is not strictly required by the VA, but it is the strongest form of evidence for neurocognitive claims. These tests objectively measure cognitive function across multiple domains and provide data that is difficult to dispute.