Primary service-connected condition

DC 9304 — Major or mild neurocognitive disorder due to traumatic brain injury

Also known as: Major or mild neurocognitive disorder due to traumatic brain injury

Mapped secondary conditions

These are commonly claimed secondary connections linked to this primary disability. Use them as a screening tool for conversations with your doctor, VSO, or VA-accredited attorney.

Primary → Secondary

Major or mild neurocognitive disorder due to traumatic brain injury → Migraine

8100

Strong

How the connection is commonly explained

Post-traumatic neurocognitive disorder from TBI commonly causes chronic headaches and migraines.

Filing tip

File migraines as secondary to TBI/neurocognitive disorder. Neurology records documenting headache onset after TBI are key.

Relationship type: Caused by

View condition detail

Primary → Secondary

Major or mild neurocognitive disorder due to traumatic brain injury → Posttraumatic stress disorder

9411

Strong

How the connection is commonly explained

TBI-related neurocognitive disorder frequently co-occurs with PTSD, with TBI increasing vulnerability to PTSD development.

Filing tip

File PTSD as secondary to TBI/neurocognitive disorder with mental health and neurology records.

Relationship type: Caused by

View condition detail

How to File a Secondary Claim

1. Have your primary condition already service-connected.

2. Get diagnosed with the secondary condition.

3. Get a nexus letter from a doctor linking them.

4. File VA Form 21-526EZ and select the claim as a secondary claim.

5. Attend the C&P exam if one is scheduled.

Disclaimer: Secondary connections shown are based on commonly established medical links. Individual claims require medical evidence. Consult a VSO or VA-accredited attorney.