This guide covers how the VA actually rates tbi / concussions under diagnostic code 8045 — the criteria the rater applies, the evidence that carries weight, and the related conditions veterans most often leave unclaimed. It's the same playbook our own case managers work from.
How the VA rates it
Rated on the WORST of ten cognitive/behavioral facets (memory, attention, executive function, judgment…) at 0/10/40/70/100. Residuals with their own codes — migraines, MH, seizures — rate SEPARATELY on top.
Honest ceiling: 40% on the worst cognitive facet; residuals rate separately.
The evidence that wins
Service connection: Blast exposure, vehicle accidents, combat deployment, documented LOC or "got his bell rung".
Medical opinion (nexus): Usually needed; a TBI C&P is a specialist exam.
Secondary conditions veterans miss
Conditions that commonly develop because of this one can be service-connected on top of it:
- Migraines secondary to TBI — Rates separately on top of the TBI facets
- MH secondary to or aggravated by TBI — Distinct-symptom carve-out matters — flag for the CSM
Filing it right the first time
Most denials on tbi / concussions claims trace to the same failures: the evidence never addressed the actual rating criteria, the connection to service was asserted instead of supported, or the C&P exam went sideways because nobody prepared for it. A complete file — records, statements written to the criteria above, and honest exam preparation — is the difference.
Think you're underrated? Find out in 2 minutes.
Flat fee. You keep 100% of your back pay. Money-back guarantee — in writing, before you pay a dollar.
See If You Qualify →