Neurological · 38 CFR 4.124a · Diagnostic Code 8045

TBI (Traumatic Brain Injury) VA Disability Rating

Last updated 2026-05-22 · Source: 38 CFR 4.124a

What TBI is in VA disability terms

Traumatic brain injury is acute or chronic brain dysfunction resulting from external mechanical force — impact, blast, penetrating injury, or sudden acceleration/deceleration. In VA practice, TBI ratings cover the long-term RESIDUALS of the injury, not the acute injury itself. A veteran injured in 2007 who has chronic memory problems, headaches, and irritability in 2026 is rated for those residuals under DC 8045.

The VA distinguishes among three levels of acute TBI severity (mild, moderate, severe) but the rating system applies the same 10-facet framework to all three. What differs is the typical residuals: mild TBI often produces subjective symptoms (headache, fatigue, mood changes) without obvious neurological deficits; moderate and severe TBI more often show measurable cognitive and motor impairment.

Blast TBI is increasingly recognized. Post-9/11 combat veterans exposed to IED detonations or repeated controlled detonations during training have elevated rates of TBI residuals even without single-event impact injury. The PACT Act of 2022 expanded presumptive service connection for several TBI-related conditions.

How the VA rates TBI (DC 8045)

DC 8045 is unique in the VA schedule. Instead of a traditional severity-based bracket system, it uses a 10-facet evaluation. Each facet is independently scored 0/1/2/3 for severity:

The score for each facet maps to an overall rating bracket:

Key features of this system:

• The highest single facet drives the rating. A veteran with mild scores across 9 facets and a severe score in 1 facet rates at 70%, not at the average. This is favorable to veterans whose impairment is concentrated in a specific domain.
• No combining across facets. Multiple "moderate" scores do not aggregate to "severe." The bracket is set by the worst single facet.
• The brackets jump. 10% → 40% → 70% → 100%. There is no 20%, 30%, 50%, 60%, 80%, or 90% bracket under DC 8045. A small improvement in the worst facet can drop the rating by 30 percentage points.
• Subjective symptoms are a recognized facet. Headaches, fatigue, and tinnitus — common mild-TBI complaints — have their own facet, so they cannot be dismissed as "not measurable."

Service-connection paths for TBI

Direct service connection

Documented in-service injury is the standard path. Evidence types:

• STRs showing the acute injury or post-injury complaints;
• MEDEVAC records, line-of-duty determinations, or after-action reports for combat injuries;
• Service personnel records reflecting hazardous duty or training;
• Buddy statements describing the injury event;
• Civilian medical records documenting late-onset TBI symptoms post-service.

Even without specific STR mentions of the head injury, a credible narrative of the in-service event combined with current TBI residuals and a nexus opinion can win on direct connection. The VA recognizes that mild TBI was historically under-diagnosed (especially pre-2007 deployments) and accepts retrospective documentation.

Blast exposure — PACT Act presumption

The PACT Act of 2022 expanded presumptive service connection for certain conditions associated with toxic exposure including airborne hazards. While TBI itself is not a PACT Act presumptive, blast exposure documentation supports TBI claims for post-9/11 combat veterans. Veterans with documented IED exposure, controlled detonation training (range cadre, EOD, breachers), or sustained mortar/rocket attack exposure have stronger TBI claims.

Secondary service connection

TBI can be secondary to another service-connected condition — for instance, TBI residuals from a service-connected fall caused by a knee giving out, or post-anoxic encephalopathy from a service-connected cardiac event. Less common than direct TBI claims but viable in the right facts.

Evidence the VA looks for

• Documented in-service injury. STR, MEDEVAC, line-of-duty, or buddy statement evidence of the head injury or blast event.
• Current diagnosis. A neurologist, neuropsychologist, or qualified primary care provider's diagnosis of TBI residuals.
• Neuropsychological testing. Strong evidence for memory, attention, executive function facet impairment. Tests like the WAIS-IV, RBANS, or trail-making tests quantify cognitive deficits.
• Imaging (MRI or CT). Helpful for moderate/severe TBI but often normal in mild TBI. Absence of imaging findings does NOT exclude a TBI rating.
• Symptom-specific records. Headache treatment records (DC 8100 may also apply), neurology consultations for dizziness or vertigo, mental-health treatment for neurobehavioral effects.
• Lay statements. Spouse, family, employer observations about cognitive or behavioral changes since the injury.

The TBI C&P exam

The TBI C&P exam is one of the most thorough in the VA system. It typically runs 60–120 minutes and uses DBQ 21-0960C-10 (Initial Evaluation of Residuals of Traumatic Brain Injury). The examiner:

• Reviews the in-service injury documentation;
• Conducts a neurological exam (motor strength, coordination, reflexes, cranial nerves);
• Administers basic cognitive screening (MoCA, mini-mental, similar);
• Documents subjective symptoms;
• Scores each of the 10 facets 0/1/2/3.

For moderate/severe TBI cases, a separate neuropsychological evaluation may be ordered. This is a longer, more detailed cognitive testing battery conducted by a neuropsychologist.

Preparation tips:

1. Bring records of every TBI-related symptom you've experienced since the injury. Memory issues, headaches, irritability, sleep problems, sensitivity to light/noise.
2. Bring a family member or close friend who can describe behavioral changes you may not perceive (anosognosia — lack of awareness of one's own cognitive deficits — is common in TBI).
3. Read DBQ 21-0960C-10 to understand the facet structure.
4. If you have specific deficits, document them in advance (e.g., a log of times you've gotten lost driving familiar routes for visual-spatial impairment).
5. Be honest. Validity testing is part of neuropsychological evaluations.

Common secondary conditions FROM TBI

• Headaches / migraines (DC 8100). Rated separately when the headache is a discrete condition, not just a "subjective symptom" facet under DC 8045.
• Depression (DC 9434). Post-TBI depression is well-documented; the medical literature supports both biological and psychological mechanisms.
• Anxiety / PTSD. Frequently comorbid; usually rated as a combined mental-health rating rather than separately due to pyramiding.
• Sleep disorders. Post-TBI sleep apnea and insomnia are recognized secondaries.
• Vertigo / Meniere's disease. Inner ear damage from blast exposure is common; rated separately under DC 6204 or 6205.
• Cervical spine injury. Often coincident with TBI (whiplash mechanism). Rated separately under DC 5237.

Common rating pitfalls

1. Under-reporting cognitive symptoms at the C&P exam. The 10-facet system rewards specific impairment documentation. Be specific about memory lapses, attention failures, social misjudgments — ideally with concrete examples.
2. Filing TBI without secondary mental-health claims. Post-TBI depression and anxiety are well-supported secondaries that can raise the combined rating significantly.
3. Confusing subjective symptoms with discrete conditions. Headaches under DC 8045's subjective-symptoms facet count differently than under DC 8100 (migraine). If you have prostrating migraine attacks, file BOTH a TBI claim AND a migraine claim — they rate separately.
4. Missing the 70% bracket. A single severe facet (e.g., severe executive dysfunction preventing independent work) qualifies the entire TBI rating for 70%, even if other facets are mild. The bracket boundary is sharp.
5. Not pursuing TDIU. 70% TBI veterans who cannot maintain substantially gainful employment due to cognitive or behavioral deficits qualify for TDIU at the 100% rate.

Worked example

Sources cited in this article

• 38 CFR 4.124a — Neurological conditions (including DC 8045)
• DBQ 21-0960C-10 — TBI Initial Evaluation
• PACT Act of 2022

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