VA TBI Claims —
Traumatic Brain Injury Filing Guide

What Is TBI for VA Purposes?

Traumatic Brain Injury (TBI) is a traumatically induced structural injury or physiological disruption of brain function caused by an external force. The VA recognizes TBI across a broad severity range, from mild concussions with brief loss of consciousness to severe penetrating head injuries — and the framework applies equally to blast exposure, IED detonations, motor-vehicle accidents, training-impact injuries, and falls during service.

The VA categorizes TBI by severity, with each tier tied to documented clinical markers:

• Mild TBI (concussion): Brief loss of consciousness (LOC) under 30 minutes, alteration of consciousness (AOC) up to 24 hours, or post-traumatic amnesia (PTA) under 24 hours. The most common TBI in combat veterans — and frequently undocumented at the time.
• Moderate TBI: LOC between 30 minutes and 24 hours, PTA between 1 and 7 days, or measurable neurological deficit. Hospital admission typical.
• Severe TBI: LOC over 24 hours, PTA over 7 days, or significant intracranial lesion. Most severe cases involve rehabilitation and long-term care.
• Penetrating TBI: Head injury that breaches the dura mater (skull penetration). Rare but highest VA rating tier.

TBI does not have to have been diagnosed in service. Many service members are told to "shake it off" after a blast or concussion and return to duty. Post-concussive syndrome — the cluster of cognitive, emotional, and physical symptoms that persist after a concussive injury — is what becomes the rated disability. The VA evaluates the residuals, not the original event documentation.

DC 8045 Rating Framework

Diagnostic Code 8045 under 38 CFR § 4.124a is the rating code for residuals of TBI. Unlike most VA ratings (which assign a single percentage like 10%, 30%, or 50%), DC 8045 uses a 10-level evaluation framework with three independently-evaluated facets of residual disability:

The VA assigns a separate rating for each facet based on the most impaired level of function, then selects the highest single rating across the three facets — that is the assigned TBI rating. The other facets are not added to it; they are evaluated for completeness but the highest single number governs.

Two strategies maximize a TBI claim's combined rating:

• Maximize the worst facet. If cognitive impairment is your dominant symptom, push for full neuropsychological testing and Objective documentation — the examiner's scores drive the rating more than subjective complaints.
• Stack separately-rated residuals. TBI residuals rated under their own diagnostic codes — migraines (DC 8100), sleep apnea (DC 6847), tinnitus (DC 6260), hearing loss (DC 6100), vestibular disorder (DC 6204), PTSD independent of DC 8045 — combine with the DC 8045 rating under the combined-rating formula. This is where the highest payouts come from.

The distinction between the TBI rating under DC 8045 and the residuals rating under other DCs is one of the most-missed mechanics in TBI claims. Veterans who only claim "TBI" without separately claiming their migraines, sleep apnea, or PTSD often leave 30–40% combined rating on the table.

Common Secondary Conditions

TBI frequently produces or co-occurs with conditions that can be claimed as secondary to a service-connected TBI. Each secondary claim requires its own nexus letter tying the condition to the TBI — but the underlying TBI service-connection does the heavy lifting.

• PTSD — Highest-yield secondary angle for TBI. Co-occurrence exceeds 50% in combat veterans with documented blast exposure; medical literature directly supports the TBI → PTSD causal chain. File as a separate § 4.130 mental-health rating.
• Migraine headaches — Among the most common TBI residuals; rated under DC 8100 with economic-loss provisions that can reach 50%. A detailed headache log (frequency, duration, severity, work-loss days) is critical evidence.
• Tinnitus — Often co-occurs with TBI from the same blast/acoustic trauma. Rated at 10% maximum, but stacks into the combined calculation.
• Hearing loss — Frequently co-occurs with TBI from blast exposure or combat-acoustic trauma; rated via audiogram under DC 6100.
• Sleep apnea — TBI can disrupt central respiratory control. File as secondary to TBI; one of the few secondary angles that frequently wins.
• Vertigo and vestibular disorders — Rated under DC 6204; common TBI residual with objective balance-testing documentation.
• Seizure disorders — Post-traumatic epilepsy is a recognized TBI complication; rated under DC 8914.
• Anxiety and Major Depressive Disorder — Either independent of DC 8045's emotional facet or stacked as a separate condition; many veterans file both.
• Peripheral nerve injuries — When the same in-service event caused both TBI and nerve damage (e.g., blast impact, MVA-induced traction injuries).

Evidence and In-Service Proof

TBI evidence falls into two categories: in-service proof of the head injury, and current proof of the residual condition. Both must be present, and the nexus letter ties them together.

In-service proof — sources that establish the event occurred during service:

• Service Treatment Records (STRs) — sick-call entries, hospital admission records, MRIs/CTs of the head, post-event medication records, follow-up visits for headaches or dizziness
• Line-of-Duty (LOD) reports — formal military documentation that the injury occurred in the line of duty; common for training accidents, MVAs, and combat-related injuries
• Unit records — after-action reports, incident reports, command chronologies that document patrol activity, blast exposure, IED attacks, or training exercises on specific dates
• Buddy statements — from fellow service members who witnessed the event, saw you immediately after, or observed behavioral changes during the deployment
• Medical evacuation / helo records — for incidents serious enough to trigger medevac
• Post-deployment health assessment — completed at end of deployment; often captures head-injury history that wasn't recorded at the time
• Your own statement — detailed first-person description of the event, your symptoms at the time, and the timeline from event to current residuals

Current proof — sources that establish the diagnosis and ongoing residuals:

• Current diagnosis from a neurologist, neuropsychologist, or TBI-specialist (VA polytrauma or private). The diagnosis should specify TBI, post-concussive syndrome, cognitive impairment, or specific residual conditions.
• Neuropsychological evaluation with cognitive testing — the gold standard for documenting residual cognitive impairment. Tests like the WAIS, Trail Making, Rey Auditory Verbal Learning, and similar batteries generate objective scores the VA rates against.
• Post-service medical records showing continuity of symptoms over time — primary care visits for headaches, sleep disruption, behavioral changes; counseling records; prescription history for TBI-related symptoms
• Workplace records showing performance decline, missed days, disciplinary actions, lost positions
• Lay statements from family, friends, and colleagues describing behavioral and cognitive changes they observed post-service
• Nexus letter from a qualified provider connecting the residuals to the in-service event

C&P Exam Specifics

The Compensation & Pension (C&P) exam for a TBI claim is different from most other VA exams. It focuses on cognitive function, neurological function, and emotional/behavioral changes — not just physical symptoms. Understanding the structure of the exam is the difference between a 30% rating and a 70% rating.

What the exam tests:

• Cognitive function — memory (short-term, long-term, working), concentration, attention, executive function, processing speed. The examiner may ask you to recall words, follow multi-step instructions, or describe how you manage daily tasks.
• Neurological function — motor strength, sensation, reflexes, coordination, balance (often with eyes closed), cranial nerve testing, gait observation.
• Emotional/behavioral changes — mood, affect, irritability, anxiety, impulsivity, social functioning. The examiner observes throughout the interview.
• Physical residuals — headaches (frequency and severity), sleep disruption, fatigue, dizziness, photosensitivity, tinnitus, hearing changes, motor or sensory complaints.
• Functional impact — how the symptoms affect work, relationships, daily activities, and social functioning.

The single biggest mistake is under-reporting. Examiners score what you describe — not what they observe. If you forget why you came into a room, lose your train of thought mid-sentence, miss appointments you set, sit in your car for ten minutes before walking into a store, or get overwhelmed at family gatherings — those need to be on the record.

The second biggest mistake is treating the cognitive component casually. Many veterans are sharp in the exam room, then describe their daily memory and concentration problems as "not that bad." The examiner scores the daily-level impairment, not the test-day performance.

Pre-exam preparation that strengthens the record:

• Keep a written symptoms log between C&P scheduling and the exam — dated daily, capturing specific incidents (forgot an appointment, lost train of thought, missed a work deadline, had a bad headache day, lost balance).
• Bring lay statements from family and colleagues describing cognitive and behavioral changes — even if you submitted them with the claim, having a fresh copy at the exam prompts the conversation.
• Be specific, not general. "I have memory problems" loses to "I forget why I entered rooms multiple times a day, lose my train of thought mid-sentence, and miss about 25% of the appointments I set." Numbers and examples are what examiners retain.
• Tie every symptom to functional impact. Memory problems → "I missed a project deadline at work and was written up" → "I avoid social gatherings because I lose track of conversations." The VA looks at occupational and social impairment.

How to File a TBI Claim

The filing path uses the standard VA claims process with a few TBI-specific evidence steps. Six steps:

1. 1
   Document the in-service head injuryCompile every record of the event — blast, IED, concussion, MVA, fall, training impact, LOC. STRs, line-of-duty reports, unit records, buddy statements from witnesses, MRAP/vehicle rollover reports, your own detailed first-person statement. Even if STRs don't show the event, converging buddy statements, unit chronology, and your description can substitute.
2. 2
   Get a current TBI diagnosisSchedule an evaluation with a neurologist, neuropsychologist, or VA polytrauma provider. The diagnosis should specify TBI under DC 8045, post-concussive syndrome, or specific residual conditions (cognitive impairment, migraines, vestibular disorder). A formal neuropsychological evaluation is the gold standard for documenting residual cognitive impairment.
3. 3
   File an Intent to File (Form 21-0966)Submit an Intent to File online at va.gov/disability before gathering the rest of your evidence. The 10-minute form locks in today's date as your effective date — back pay runs from that day, not from when the full claim lands. You have 12 months to submit your complete evidence after filing.
4. 4
   Obtain a medical nexus letterTBI claims require a nexus letter — unlike MST claims. The letter should come from a neurologist, neuropsychologist, or TBI-experienced provider, state the current diagnosis, identify the in-service head injury or blast exposure with specifics, cite the medical literature linking the mechanism to the residual condition, and conclude it is "at least as likely as not" that the residuals are service-connected. Generic letters without specifics often get denied.
5. 5
   Submit VA Form 21-526EZ with the full evidence packageComplete the form online at va.gov/disability. List the diagnosed condition (TBI / post-concussive syndrome / cognitive impairment / migraines / etc.) and explicitly note the in-service event. Upload your full evidence package: STRs documenting the injury, line-of-duty reports, buddy statements, post-service medical records showing continuity, current diagnosis and DBQ, nexus letter, lay statements, and any secondary condition claims (PTSD, migraines, tinnitus, hearing loss, sleep apnea) with their own nexus chain.
6. 6
   Prepare for your TBI C&P examThe VA schedules a Compensation & Pension exam focused on cognitive, neurological, and emotional/behavioral function. Bring a symptoms log dated between scheduling and exam day. Describe every cognitive symptom with specifics (forgetting why you entered rooms, losing train of thought mid-sentence, missing appointments) and tie each to a functional consequence (work problems, relationship issues, daily-life disruption).