Traumatic brain injury is one of the most common disabilities among veterans of Iraq and Afghanistan, and it is rated differently than almost any other condition on VA's schedule. Instead of one exam measurement, VA looks at ten separate areas of function and lets the worst one drive your rating. Here is how that works, in plain English.
TBI residuals are rated under 38 CFR 4.124a, Diagnostic Code 8045, using a table called the Evaluation of Cognitive Impairment and Other Residuals of TBI Not Otherwise Classified. That table covers ten facets:
Each facet is scored at a level of 0, 1, 2, 3, or "total." VA does not add these scores together. Instead, it takes whichever facet scored the highest and rates the whole condition off that one facet: a highest level of 0 means a 0 percent rating, 1 means 10 percent, 2 means 40 percent, and 3 means 70 percent. If even one facet reaches "total," the overall rating is 100 percent.
Veterans dealing with the after effects of a blast, a blow to the head, a motor vehicle accident, or a fall during service. Veterans who already have a TBI diagnosis and are not sure how the rating math works. Anyone preparing for a neuropsychological or C&P exam who wants to understand what the examiner is actually scoring.
In-service TBIs commonly come from IED blasts, combat exposure, motor vehicle accidents, falls, training injuries, and assaults. Mild TBIs (often called concussions) frequently resolve within months, while moderate and severe injuries can leave lasting residuals such as headaches, dizziness, memory problems, trouble concentrating, mood changes, sleep disruption, and slower processing speed. Because these residuals can look different from one veteran to the next, VA is supposed to evaluate the specific facets that apply to you rather than assuming a fixed set of symptoms.
If your TBI is rated moderate or severe, VA presumes certain later conditions are connected to it without requiring separate proof:
These presumptions can shortcut the nexus requirement for these specific follow-on conditions. Check other links your case might be missing with the Secondary Conditions Mapper.
TBI and conditions like PTSD or depression often share symptoms such as irritability, poor concentration, and sleep problems. VA is not allowed to rate the same symptom twice under two different diagnostic codes, a practice called pyramiding. If your depression is already being rated as part of your TBI facets, it usually cannot also receive its own separate 100 percent rating for the identical symptoms. A knowledgeable provider or accredited representative can help sort out which symptoms belong to which condition so nothing is double counted or, more often, left out entirely.
If TBI residuals prevent you from holding steady, gainful employment, you may qualify for Total Disability based on Individual Unemployability (TDIU), which pays at the 100 percent rate even without a 100 percent combined schedular rating. Severe TBI that leaves a veteran needing regular aid and attendance for daily activities can also qualify for a special monthly compensation add-on on top of the standard rating. Both are worth discussing with an accredited representative if daily function or ability to work is significantly affected.
Check readiness with the free Claim Readiness Checker, map related conditions with the Secondary Conditions Mapper, and organize records with the Condition Evidence Builder. More in the Claim Preparation hub.
Related reading: What Veterans Should Know About TDIU, VA Secondary Conditions Explained.
VetClaimsGuide is an independent educational platform and self-help resource. It is not a law firm, not a VSO, not VA-accredited representation, and is not affiliated with the Department of Veterans Affairs. It does not file or prepare claims for veterans, represent veterans, or provide legal or medical advice, and it does not diagnose conditions or guarantee any rating, payment, or outcome. It helps veterans organize information, understand possible evidence gaps, and prepare questions to discuss with a VSO, accredited representative, attorney, or medical provider. Confirm everything at VA.gov or with an accredited professional.