Author’s Take
I’ve watched more money walk out the door on traumatic brain injury claims than on almost any other condition, and it’s never because the veteran wasn’t hurt badly enough. It’s because TBI is the one rating where the VA’s own structure invites a lowball. The brain injury gets scored on a single facet table, and everything that travels with it. The migraines, the ringing ears, the mood that cratered after the blast; all of it gets absorbed into that one number instead of being rated on its own. The regulation actually tells the rater to break those out and rate them separately. Most decisions don’t. So the veteran reads “40% for TBI,” assumes that’s the ceiling, and files the letter away.
If I could get one point across, it’s this: a TBI rating is rarely one rating. It’s a cluster, and the difference between scoring it as one condition and scoring it as the four or five conditions it really is can be the difference between 40% and 80%. Read your decision for what got folded in, not just the number on top.
Quick Answer
The biggest reason TBI scores come back low is that residuals with their own diagnosis, such as migraine headaches, a mental health condition, or tinnitus, are supposed to be rated separately and combined, not buried inside the single TBI number.
The VA rates the residuals of traumatic brain injury under 38 CFR 4.124a, Diagnostic Code 8045, using a table of 10 cognitive and behavioral “facets.”
Your overall TBI percentage is set by your single highest facet: a highest level of 0 = 0%, 1 = 10%, 2 = 40%, and 3 = 70%, and any facet scored “total” = 100%. There is no 20%, 30%, 50%, or 60% on this table. The jump from level 2 to level 3 takes you straight from 40% to 70%.
Key Takeaways
- TBI residuals are rated under 38 CFR 4.124a, DC 8045. The score comes from 10 facets of cognitive and behavioral impairment.
- The facet scale is not continuous: the highest facet level maps to 0%, 10%, 40%, or 70%, with “total” equaling 100%. A finding of level 2 caps you at 40%; level 3 jumps to 70%.
- The regulation requires that any residual with a distinct diagnosis—migraine (DC 8100), a mental disorder under § 4.130, tinnitus, seizures, and others—be rated separately and combined under § 4.25, not counted only as part of the TBI facet score.
- The injury-severity label “mild,” “moderate,” or “severe” TBI describes your condition at the time of injury and, by regulation (Note 4), does not control your current rating.
- At 2026 rates, the gap between a lumped 40% rating ($795.84) and a properly separated 80% combined rating ($2,102.15) is about $1,300 more per month for a veteran with no dependents (VA.gov).
How the VA Actually Rates a TBI
A traumatic brain injury produces three broad kinds of dysfunction, and the regulation names all three: cognitive, emotional/behavioral, and physical. DC 8045 handles the cognitive piece, plus subjective symptoms, through a single table titled “Evaluation of Cognitive Impairment and Other Residuals of TBI Not Otherwise Classified.”
That table has 10 facets:
- Memory, attention, concentration, executive functions
- Judgment
- Social interaction
- Orientation
- Motor activity
- Visual spatial orientation
- Subjective symptoms
- Neurobehavioral effects
- Communication
- Consciousness
A C&P examiner scores each facet that applies, from 0 up to 3, with a fifth and highest level called “total.” Here’s the part that decides your check: you don’t add the facets together. The VA finds your single highest facet and assigns the overall rating from it. The regulation states, “assign the overall percentage evaluation based on the level of the highest facet as follows: 0 = 0 percent; 1 = 10 percent; 2 = 40 percent; and 3 = 70 percent,” and a “total” on any one facet means a 100% rating.
Translation: your TBI rating is a single-facet score, not a sum. If nine facets are at level 1 and one facet is at level 3, you’re at 70% on the strength of that one facet. And because the scale skips from 40% (level 2) to 70% (level 3), the entire fight on many TBI claims is whether one facet should have been scored a 3 instead of a 2.
The Mistake That Costs the Most: Letting Everything Get Folded Into One Number
This is the error that swallows the largest amount of money, and it’s written right into how DC 8045 is supposed to work. The regulation says that subjective symptoms get scored on the facet table, “however, separately evaluate any residual with a distinct diagnosis that may be evaluated under another diagnostic code, such as migraine headache or Meniere’s disease, even if that diagnosis is based on subjective symptoms.”
It goes further. Emotional and behavioral symptoms, when there’s an actual mental health diagnosis, get rated under § 4.130 (the mental disorders schedule), not the TBI table. Physical residuals such as hearing loss, tinnitus, seizures, neurogenic bladder or bowel, and motor or sensory problems each get their own diagnostic code. The regulation then says to “combine under § 4.25 the evaluations for each separately rated condition,” and that the TBI facet score counts as one condition for combining purposes.
Put plainly, a complete TBI claim is usually several ratings stacked together, then combined. When a decision comes back as a single “40% for TBI residuals” and your file shows documented migraines, a PTSD or depression diagnosis, and tinnitus, that’s the signature of residuals that were absorbed instead of broken out. Each one that should have stood alone is a rating you didn’t get.
There’s a guardrail to respect, and it runs both directions. Note 1 to DC 8045 bars pyramiding: the VA can’t count the same symptom twice. If your irritability is already driving a PTSD rating under § 4.130, it can’t also be scored under the TBI neurobehavioral facet. But when symptoms are “clearly separable,” the regulation is explicit that you “assign a separate evaluation for each condition.” Cognitive deficits from the brain injury and the mood symptoms of a diagnosed mental disorder are different manifestations. Migraines are a different manifestation. Tinnitus is a different manifestation. Separable means separately rated.
Four More Ways the Score Comes Back Low
The “mild TBI” anchor. Medical records often carry a severity label from the day of injury: mild, moderate, or severe TBI. Raters sometimes read “mild” and treat the claim as a small one. Note 4 to DC 8045 forecloses that: those terms “refer to a classification of TBI made at, or close to, the time of injury rather than to the current level of functioning,” and the classification “does not affect the rating assigned under diagnostic code 8045.” A “mild” TBI at the moment of a blast can produce severe residuals years later. The label is not the rating.
The wrong examiner. TBI is a specialist evaluation. VA policy directs that an initial TBI compensation exam to establish a diagnosis be performed by one of four specialists: a physiatrist, psychiatrist, neurologist, or neurosurgeon. When a general examiner conducts the initial review, the facet scoring is frequently thinner than the record supports, and may be a basis to challenge the exam’s adequacy and support your case with additional evidence to challenge the opinion.
Emotional symptoms with no mental health rating. If the record shows a diagnosed mental disorder tied to the injury, those symptoms belong under § 4.130, where the rating scale runs to 100%. Scored only as the TBI “neurobehavioral effects” facet, the same symptoms can be capped far lower. A missing § 4.130 evaluation is one of the cleanest underrating patterns to spot.
No claim for Special Monthly Compensation. DC 8045 specifically tells raters to “consider the need for special monthly compensation” for problems such as loss of use of an extremity, certain sensory impairments, or the need for aid and attendance because of cognitive impairment. SMC is money on top of the schedular rating, and it’s routinely never addressed on TBI decisions.
Example: Marcus’s 40% Was Really an 80%
Marcus, 34, was three vehicles back when an IED went off outside Kandahar. Years later his decision letter read “40% for residuals of traumatic brain injury,” and he almost accepted it as the ceiling. Working the file section by section told a different story.
His cognitive testing supported a level 2 facet score, which is where the 40% came from. But three other things were sitting in his medical record, each with its own diagnosis, none of them separately rated:
- Migraine headaches, several prostrating attacks a month, ratable under DC 8100.
- PTSD, formally diagnosed at the VA, ratable under § 4.130.
- Tinnitus, the constant ringing since the blast, ratable under DC 6260.
Rated on their own and combined under § 4.25 with the TBI score, the picture changed completely. Run the VA’s combined-rating math on a 50% (PTSD), 40% (TBI), 30% (migraine), and 10% (tinnitus) set, and it lands at roughly 80%, not 40%. At 2026 rates for a veteran with no dependents, that’s about $2,102 a month instead of $796, close to $1,300 more every month, for the same injuries that were already in his file. Nothing new had to happen to Marcus’s body. The residuals just had to be rated as what they were: separate conditions, separately scored, then combined.
The separability rule matters here, and Marcus’s advocate respected it. The PTSD symptoms drove the § 4.130 rating; they weren’t also double-counted on the TBI neurobehavioral facet. Cognitive deficits stayed with the TBI. That’s the line Note 1 draws, and staying on the right side of it is what makes a separated rating hold up.
How to Check Your Own TBI Decision
Pull your rating decision and your C&P exam, then do three things. First, find each facet score on the exam and confirm the VA assigned your overall percentage from the single highest facet, not some lower average. Second, list every diagnosis in your record—migraines, any mental health condition, tinnitus, seizures, balance or sensory problems—and check whether each got its own rating or got absorbed into the TBI number. Third, look at the injury-severity language; if a “mild” label seems to be doing the work the current findings should be doing, that’s Note 4 territory. Gaps in any of those three are the leverage for a Supplemental Claim or a Higher-Level Review.
Frequently Asked Questions
Q: What is the highest schedular VA rating for TBI?
A: 100%. Under DC 8045, a facet scored at the “total” level produces a 100% rating on its own. Short of “total,” the highest single-facet rating is 70% (a level 3 finding).
Q: Why is there no 50% or 60% TBI rating?
A: Because the DC 8045 facet table only maps to 0%, 10%, 40%, 70%, and 100%. The scale skips the values in between, which is why a level 2 facet (40%) and a level 3 facet (70%) are the two numbers most TBI disputes turn on.
Q: Can I get a separate rating for migraines caused by my TBI?
A: Yes. DC 8045 names migraine headache as an example of a residual with a distinct diagnosis that is “separately evaluated” under its own code (DC 8100) and then combined with the TBI rating under § 4.25, rather than folded into the facet score.
Q: Does a “mild TBI” diagnosis limit my rating?
A: No, not the rating. By Note 4 to DC 8045, the mild/moderate/severe label describes the injury at the time it happened and does not control your current rating; current functioning is what the facets measure. But the label does matter for a different purpose: under 38 CFR § 3.310(d), certain conditions like Parkinsonism, seizures, dementias, depression, and hormone deficiency diseases, are *presumed* to be caused by a service-connected TBI if they appear within timeframes that depend on whether the TBI was classified as mild, moderate, or severe.
Q: My TBI and PTSD symptoms overlap. Can I be rated for both?
A: Yes, as long as the same symptoms aren’t counted twice. Note 1 bars pyramiding but allows separate ratings when the manifestations are “clearly separable.” Cognitive residuals and a diagnosed mental disorder are generally separable and can be rated under DC 8045 and § 4.130 respectively. When symptoms can’t be separated, the veteran is entitled to whichever code yields the better assessment.
Talk to Veteran Help Legal
If your TBI decision came back as a single number and your file holds more than one diagnosis, it’s worth a careful read before you accept it. The VA-accredited attorneys at Veteran Help Legal can review how your residuals were rated, whether anything that should have stood alone got absorbed, and which review lane fits your situation. We can make sure your claim is evaluated the way the regulation actually requires.