A service-connected brain injury can be the starting point for other claims. The regulation that governs those claims is not Diagnostic Code 8045 but 38 CFR 3.310, the secondary service connection rule.
This guide is part of our series on VA claims for traumatic brain injury.
What the regulation provides
38 CFR 3.310(a) provides service connection for a disability that is proximately due to or the result of a service-connected disease or injury. Subsection (b) covers aggravation, where a nonservice-connected condition is made worse by a service-connected one, with compensation based on the degree of aggravation.
Our secondary service connection guide explains the general structure in plain language.
Common secondary claims after a brain injury
Whether any of these applies depends entirely on the individual record and the medical evidence. Conditions veterans commonly raise as secondary to a service-connected TBI include:
- A diagnosed mood or anxiety disorder following the injury
- Sleep disturbance and diagnosed sleep disorders
- Diagnosed headache disorders - see our post-traumatic headaches guide
- Balance and vestibular conditions
- Vision changes with a diagnosed condition
- Tinnitus when tied to the same injury event - see our tinnitus guides
Where veterans start
Every case is different, and there is no obligation at any step. When veterans want to understand what their records actually support, these are the two most common starting points:
- Medical records review
A licensed physician reviews your records for a $250 flat fee and identifies which conditions the available evidence may support. The fee is refunded in full if nothing supportable is identified.
- Nexus letter
When the records support one, a licensed provider writes the medical opinion that addresses the link between your condition and your service.
What these claims turn on
Secondary claims rest on a medical link between the service-connected condition and the new one. The VA's evidence page describes the categories of evidence it considers, and our guide to medical evidence in a VA claim explains what a supporting medical opinion addresses.
38 CFR 4.14 applies here too - a symptom already counted in the TBI evaluation is not counted again in the secondary evaluation.
This guide is educational. It summarizes the VA's own published rules and links to the exact sources it relies on. It is not legal or claims advice, and it is not a substitute for an accredited representative, who can advise you about your specific claim. Accredited help is free - search the VA's accreditation database to find a Veterans Service Organization, accredited agent, or attorney.
Frequently asked questions
What is a secondary condition?
38 CFR 3.310 provides for service connection of a disability that is proximately due to, the result of, or aggravated by an already service-connected condition.
How is a secondary condition different from a TBI residual?
Residuals are evaluated under Diagnostic Code 8045 as part of the brain injury evaluation. A secondary condition is a separate diagnosed disability that is service connected through its relationship to the brain injury.
Does aggravation count?
Yes. 38 CFR 3.310(b) addresses aggravation of a nonservice-connected disability by a service-connected one, with the evaluation based on the degree of aggravation.