VA TBI Claims: DC 8045 Ratings and Service Connection

What the VA Counts as Residuals of traumatic brain injury (TBI)

DC 8045 does not rate the brain injury itself. It rates the lasting effects, called residuals, that remain after a traumatic brain injury. Under 38 CFR 4.124a, the regulation states that "there are three main areas of dysfunction that may result from TBI and have profound effects on functioning: cognitive (which is common in varying degrees after TBI), emotional/behavioral, and physical. Each of these areas of dysfunction may require evaluation."

The Three Areas of Dysfunction and How They Are Rated

The single most important thing to understand about DC 8045 is that the three areas of dysfunction are not all rated the same way. The regulation routes each one to a different place.

1. Cognitive dysfunction (the 10-facet table)

Cognitive impairment, plus any subjective symptoms that do not have their own diagnosis, are evaluated under the table titled "Evaluation of Cognitive Impairment and Other Residuals of TBI Not Otherwise Classified." This is the table that produces the 0, 10, 40, 70, or 100 percent rating. The 10 facets and the mapping rule are covered in the rating section below.

2. Emotional/behavioral dysfunction (rated under 4.130)

The regulation states: "Evaluate emotional/behavioral dysfunction under 4.130 (Schedule of ratings, mental disorders) when there is a diagnosis of a mental disorder." That means if you have a diagnosed mental health condition along with your TBI, the emotional and behavioral effects are rated under the 38 CFR 4.130 general rating formula for mental disorders, the same 0/10/30/50/70/100 formula used for depression and PTSD. When there is no diagnosed mental disorder, the emotional/behavioral symptoms are scored under the neurobehavioral effects facet in the cognitive table instead.

3. Physical (including neurological) dysfunction (rated under its own codes)

Physical residuals are not folded into the facet table. The regulation lists examples to be rated under their own appropriate diagnostic code: "Motor and sensory dysfunction, including pain, of the extremities and face; visual impairment; hearing loss and tinnitus; loss of sense of smell and taste; seizures; gait, coordination, and balance problems; speech and other communication difficulties... neurogenic bladder; neurogenic bowel; cranial nerve dysfunctions; autonomic nerve dysfunctions; and endocrine dysfunctions." Common examples include migraine headaches (DC 8100), tinnitus (DC 6260), and sleep problems. Each is rated separately and then combined under 38 CFR 4.25.

DC 8045 Rating Levels

The overall percentage for the cognitive table is set by a single rule, quoted verbatim from 38 CFR 4.124a: "Assign a 100-percent evaluation if 'total' is the level of evaluation for one or more facets. If no facet is evaluated as 'total,' 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."

In plain language: the VA scores each of the 10 facets from 0 to 3 (or "total"), then looks only at your single highest facet level and converts that one number into your rating. Adding up multiple facets does not raise the rating. One facet at level 3 produces the same 70 percent as five facets at level 3.

The 10 facets of the cognitive impairment table

The table below catalogues the 10 facets and what each scored level means, summarized from the verbatim regulation. Note that not every facet has every level: Social interaction, Subjective symptoms, and Neurobehavioral effects have no "total" level. Subjective symptoms has no level 3. Consciousness has only a "total" level.

Special monthly compensation (SMC): DC 8045 directs the rater to "consider the need for special monthly compensation for such problems as loss of use of an extremity, certain sensory impairments, erectile dysfunction, the need for aid and attendance (including for protection from hazards or dangers incident to the daily environment due to cognitive impairment), being housebound, etc." SMC is an extra payment on top of the schedular rating. The FAQ below covers how SMC commonly applies in TBI claims.

Notes from the regulation:

• Note (1): When a TBI residual overlaps with a comorbid mental, neurologic, or other physical disorder, do not assign more than one evaluation based on the same manifestations. If the symptoms cannot be clearly separated, assign a single evaluation under whichever criteria better assess the overall impairment. If they are clearly separable, rate each separately.
• Note (2): The symptoms listed as examples at certain levels are only examples, not symptoms that must all be present to assign a level.
• Note (3): "Instrumental activities of daily living" means activities other than self-care that are needed for independent living (meal preparation, housework, shopping, traveling, laundry, managing one's own medications, using a telephone), distinct from basic "activities of daily living" like bathing, dressing, and eating.
• Note (4): The terms "mild," "moderate," and "severe" TBI in medical records refer to a classification made at or near the time of injury, not to the current level of functioning. This classification does not affect the rating assigned under DC 8045.
• Note (5): A veteran whose TBI residuals were rated under a version of DC 8045 in effect before October 23, 2008 may request review under the current criteria, regardless of whether the disability has worsened. The request is treated as a claim for an increased rating, but the award cannot be effective before October 23, 2008.

How Residuals of traumatic brain injury (TBI) Gets Service Connected

Direct service connection

Direct service connection is the primary route for TBI. It requires an in-service head-injury event (a blast, a motor vehicle accident, a fall, or combat exposure), a current diagnosis of TBI residuals, and a medical nexus linking the two. This is why the two largest denial reasons in published Board decisions for DC 8045 are a missing nexus and a missing current diagnosis. In published BVA decisions for DC 8045, of 7,882 classified service-connection denials, 4,374 were for lack of a medical nexus, 2,243 were for no current diagnosis (unusually high here, because claimed residuals are often not objectively shown on testing), and 1,265 were for no in-service event (published BVA decisions).

Presumptive secondaries after a service-connected TBI (38 CFR 3.310(d))

There is no toxic-exposure or PACT Act presumptive for TBI itself. A TBI is established by direct or in-service-injury service connection. The presumptive logic instead runs downstream. Under 38 CFR 3.310(d), once a TBI is service connected, five diagnosable illnesses are held to be the proximate result of that TBI, in the absence of clear evidence to the contrary, depending on the TBI severity classified at the time of injury and the time between injury and onset:

• Parkinsonism, including Parkinson's disease, following moderate or severe TBI.
• Unprovoked seizures following moderate or severe TBI.
• Dementias (specifically presenile dementia of the Alzheimer type, frontotemporal dementia, and dementia with Lewy bodies) if manifest within 15 years following moderate or severe TBI.
• Depression if manifest within 3 years of moderate or severe TBI, or within 12 months of mild TBI.
• Diseases of hormone deficiency that result from hypothalamo-pituitary changes if manifest within 12 months of moderate or severe TBI.

"Mild," "moderate," and "severe" here refer to the TBI severity classified at or near the time of injury, consistent with Note (4) above. See the presumptive check tool.

Ordinary secondary service connection (38 CFR 3.310(a) and (b))

Veterans who fall outside the severity or time windows of 3.310(d) can still pursue ordinary secondary service connection under 38 CFR 3.310 with a medical nexus. This pathway is heavily used and frequently successful for TBI residuals. Aggravation under 3.310(b) is also available where a non-service-connected condition is made worse by the TBI. The secondary conditions section below summarizes what the Board's published decisions show for the most-claimed pathways.

Secondary to TBI: headaches and migraine

Headaches are one of the most common physical TBI residuals. When a headache disorder has a distinct diagnosis such as migraine, it is rated under its own code (DC 8100) rather than the facet table. In published BVA decisions, migraine claimed secondary to TBI was granted in approximately 58% of those appeals (n = 57, published BVA decisions). See the migraine claims guide.

Secondary to TBI: a diagnosed mental disorder

When a mental disorder such as a depressive disorder is diagnosed alongside TBI, the emotional/behavioral effects are rated under the 4.130 mental-disorder formula. In published BVA decisions, an unspecified depressive disorder (DC 9435) claimed secondary to TBI was granted in approximately 49% of those appeals (n = 45, published BVA decisions). A related dataset shows depression secondary to TBI granted at a notably higher rate in a separate slice. See the depression claims guide.

Secondary to TBI: sleep apnea and other conditions

Obstructive sleep apnea is a frequently claimed TBI secondary. In published BVA decisions, sleep apnea (DC 6847) claimed secondary to TBI was granted in approximately 53% of those appeals (n = 149, published BVA decisions). Tinnitus (DC 6260) and Meniere's syndrome (DC 6205) are also commonly claimed alongside TBI. See the sleep apnea claims guide and nexus letters.

Common Secondary Conditions

TBI sits at the center of a web of related claims that runs in both directions. Some conditions are claimed as caused or aggravated by a service-connected TBI. Others are conditions that veterans claim a TBI was caused by or occurred alongside. The published Board data below shows grant rates for each direction. All figures are grant rates (appeals granted divided by decisions) paired with the sample size.

Conditions a service-connected TBI commonly causes or aggravates

These are conditions claimed as secondary to (downstream of) a TBI. Each bar is the published BVA grant rate, with the number of decisions below it:

Conditions commonly claimed alongside or before a TBI claim

These are conditions where a TBI was argued to be connected to, or to co-occur with, another claimed condition. Treat these as co-occurring patterns rather than strict causation. Each bar is the published BVA grant rate:

Pyramiding and Rating Separately

The VA's pyramiding rule at 38 CFR 4.14 prevents paying twice for the same symptoms. For TBI, the regulation builds this in two ways.

First, DC 8045 directs that physical residuals with a distinct diagnosis (migraine, Meniere's disease, seizures, hearing loss and tinnitus, neurogenic bladder, neurogenic bowel, and similar) are evaluated under their own diagnostic codes and combined under 38 CFR 4.25. A diagnosed mental disorder is rated under the 4.130 formula. So a complete TBI picture is often more than just the "8045" rating. The separately diagnosed residuals carry their own percentages, and the cognitive-table evaluation counts as a single condition for combining purposes.

Second, Note (1) to DC 8045 bars double-counting. Where a TBI residual in the facet table overlaps with a comorbid mental or neurologic diagnosis, the same manifestations cannot support more than one evaluation. If the symptoms cannot be clearly separated, the rater assigns one evaluation under whichever criteria better capture the overall impairment. If they are clearly separable, each is rated separately. In practice this means the headache symptom that is being rated as migraine under DC 8100 should not also be the symptom driving the Subjective symptoms facet in the cognitive table.

Evidence That Wins These Claims

The pattern in published Board decisions for DC 8045 is consistent: a private nexus opinion is associated with a large jump in the grant rate, and a nexus letter is the highest-winning evidence type. The figures below are from published BVA decisions and are grant rates (appeals granted divided by decisions citing that evidence), paired with the sample size.

• A private nexus opinion (the largest single factor): approximately 78.1% of TBI appeals were granted when a private nexus opinion was in the file, versus 34.5% without it, a 43.6-point difference (published BVA decisions, n = 1,249 with / 5,534 without).
• Nexus letter: in TBI decisions that cited a nexus letter, approximately 58% were granted (published BVA decisions, n = 3,593). This was the top evidence type.
• Medical literature: approximately 50% granted when cited (published BVA decisions).
• Private medical opinion: approximately 41% granted when cited (published BVA decisions).
• Buddy and lay statements: approximately 40% granted when cited (published BVA decisions). Lay statements describing the in-service head injury and the changes family and coworkers observed can support the timeline and the in-service event.
• VA examination: approximately 38% granted when cited (published BVA decisions).
• Service treatment records: approximately 36% granted when cited (published BVA decisions). Records documenting the in-service head injury (a blast, an accident, a fall) support the in-service event.

Common Mistakes

Diagnostic Tests and the DBQ

The VA structures the TBI exam around the 10 facets of 38 CFR 4.124a. The tests and forms below are what the adjudication manual and exam templates rely on:

• The TBI DBQ (VA Form 21-0960c-1): the "Initial Evaluation of Residuals of Traumatic Brain Injury" or Review TBI Disability Benefits Questionnaire is built around the 10 facets. See the DBQ guide.
• A comprehensive TBI examination by a specialist: the VA requires the initial or comprehensive TBI exam to be performed by one of four specialties, a physiatrist, neurologist, neurosurgeon, or psychiatrist.
• Neuropsychological (neurocognitive) testing: provides the objective evidence of memory, attention, concentration, and executive-function impairment that supports facets at level 2 or 3 rather than a level 1 subjective complaint.
• Neuroimaging (CT and/or MRI of the brain): documents structural injury and severity and supports dementia or parkinsonism workups.
• A mental health DBQ or examination under 4.130: used when there is a separately diagnosed mental disorder (for example a depressive disorder or PTSD) arising with the TBI.
• Condition-specific DBQs and tests for separately ratable physical residuals: the headache or migraine DBQ, the seizure (epilepsy) DBQ and EEG, an audiology exam for hearing loss and tinnitus, an eye and visual exam, a smell and taste evaluation, endocrine and hormone panels for hypothalamic-pituitary deficiency, and a gait, balance, and coordination assessment.

Frequently Asked Questions