Claim Raven @ClaimRavenApp

The takeaway isn't "TBI vets are doomed." It's that the Board's evidentiary bar isn't uniform. What wins a migraine claim won't carry a TBI claim. What gets a Parkinson's remand might get an epilepsy denial. Know where your condition sits before you file. You earned it.

Epilepsy is the hardest condition in this dataset. Lowest grant rate (22.4%). 37.2% denied. 40.4% remanded. Fewer than 1 in 4 wins outright. The rest split between losing and starting over. Claim Raven's BVA database flags this pattern consistently.

Likely reason for Parkinson's' soft denials: Agent Orange presumption. Vietnam-era vets with Parkinson's have a presumptive service connection, which changes the evidentiary burden entirely. The dataset doesn't split presumptive vs direct, but the math fits.

Parkinson's sits in the middle on grants (38.2%) but with a weird split: → 30.8% denied → 30.9% remanded Almost identical. Unusual. Translation: the Board rarely says a hard "no" to Parkinson's. It either grants or asks for more evidence.

Migraines run the opposite pattern. Highest grant rate (40.7%). Lowest denial rate tied with neuropathy (25.5%). Why: clear diagnostic criteria, common across all service eras, and onset during/after service usually shows up in the medical record.

The TBI remand rate is also the lowest in the group: 20.6%. That sounds neutral. It isn't. It means the Board feels confident deciding TBI cases, and that confidence usually breaks against the veteran. Fewer second chances, more final denials.

Why TBI keeps losing at the Board, best guesses: → Diagnosis itself is a spectrum from mild concussion to severe injury → Heavy symptom overlap with PTSD (memory, sleep, irritability) → When the Board can't tell what's causing what, ambiguity hurts the veteran

"Neurological" sounds like one category. The data says otherwise. Grant rates across five conditions: → Migraines: 40.7% → Parkinson's: 38.2% → TBI: 28.3% → Neuropathy: 25.1% → Epilepsy: 22.4% Same body system. 18-point spread.

TBI is the outlier on denials. 51.0% of TBI cases that reach the Board get denied. The only condition in this group where more than half end in "no." Compare to migraines at 25.5% denied. That's a 25.5-percentage-point gap between conditions.

Two veterans walk into the Board with neurological claims. One has migraines. The other has TBI. The migraine veteran has nearly double the odds of winning. Same body system. Wildly different outcomes. 4,962 BVA decisions tell the story.

Secondary Connection Chains That Actually Hold Up at the Board What 101,518 BVA decisions show about which secondary connections win, and which ones almost never do *** Most veterans know the basics: connect a condition to service, submit evidence, wait. But there's a second layer that doesn't get enough attention: secondary service connection, where a condition you're already service-connected for causes or aggravates a new one. We pulled 101,518 BVA decisions across 185 conditions and broke them down by connection type. The results aren't what most people expect. Presumptive claims outperform direct. Secondary claims trail both. And inside the secondary category, the variation is so wide that the average is almost meaningless. THE FOUR PATHS, BY THE NUMBERS When you split BVA outcomes by how the claim is framed, four categories emerge: Presumptive: 46.9% grant rate (8,975 cases) Aggravation: 41.3% grant rate (886 cases) Direct: 41.2% grant rate (40,026 cases) Secondary: 35.1% grant rate (19,189 cases) Presumptive leads by a comfortable margin. That makes sense. The law removes some of the evidentiary burden. If you served in a qualifying location during a qualifying period and developed a listed condition, the connection is essentially pre-built. Direct claims sit at 41.2% across 40,026 cases. The largest category by volume. That average hides a huge range of conditions, evidence quality, and circumstances. Aggravation claims posted 41.3% across just 886 cases. The sample is small enough that the number could mean a lot of things. Possibly that the aggravation claims that reach the Board tend to have strong evidence, possibly nothing more than noise. And secondary sits at 35.1%. The lowest of the four. But that headline number is hiding something important. WHY THE 35.1% AVERAGE IS MISLEADING When we filtered the dataset for the lowest-performing conditions with 200 or more cases, several of the worst entries were specific secondary chains: Anxiety Secondary Tinnitus: 4.9% grant rate (865 cases) ED Secondary PTSD: 5.6% grant rate (499 cases) Heart Disease Secondary Sleep Apnea: 6.8% grant rate (500 cases) Hypertension Secondary Sleep Apnea: 7.4% grant rate (665 cases) Each of these has hundreds of cases. Each is winning less than 8% of the time. They're pulling the secondary average down hard. At the other end of the same category, other chains are winning at 75%. When that's the spread, the 35.1% average becomes almost useless as a predictor of anything. We don't know exactly why some chains perform so poorly. Possibilities: weaker medical literature supporting the connection, less detailed nexus opinions, or Board judges who've seen enough of a particular chain to be skeptical without strong evidence. The data can't isolate which factor matters most. The takeaway isn't that secondary claims are worse. It's that the specific chain matters enormously. A secondary claim isn't a secondary claim isn't a secondary claim. THE CHAINS WINNING 75% OF THE TIME Eight secondary chains in the dataset hit 75% approval. More than double the overall BVA grant rate of 29.5% across all 101,518 cases. Mental health secondary to chronic physical conditions: - Ischemic Heart Disease to Depression: 75% - Fibromyalgia to Depression: 75% - Fibromyalgia to Anxiety: 75% - Migraine Headaches to Depression: 75% - Migraine Headaches to Anxiety: 75% TBI and downstream effects: - Traumatic Brain Injury to Depression: 75% Trauma-related chains: - Military Sexual Trauma to Anxiety Disorder: 75% Co-occurring mental health: - Major Depressive Disorder to Anxiety Disorder: 75% Every chain on this list shares the same characteristics: 1. Strong medical literature support. The connection isn't speculative. It's well-documented in peer-reviewed research. 2. Intuitive medical logic. You don't need a medical degree to understand why chronic pain causes depression or why TBI affects mood. 3. Mental health as the secondary. Physical or trauma-based primary conditions leading to mental health secondary conditions consistently perform well. 4. Strong evidence designation in the database. Every one of these chains carries a strong evidence rating. Contrast that with anxiety secondary to tinnitus at 4.9%, or ED secondary to PTSD at 5.6%, and the pattern is clear. The chains that succeed have an obvious, well-documented medical pathway between the conditions. WHY PRESUMPTIVE LEADS BUT DOESN'T SWEEP Presumptive service connection exists for specific situations: certain Agent Orange conditions, Gulf War service, Camp Lejeune water contamination. The legal framework essentially pre-establishes the connection. That removes a major evidentiary hurdle, and the data reflects it. Some of the highest-performing conditions in the dataset are on presumptive lists: - Parkinson's Secondary Agent Orange: 51.8% grant rate (500 cases) - Prostate Cancer: 49.9% grant rate (597 cases) Both substantially above the overall 29.5% average. But the 46.9% headline rate also means more than half of presumptive claims at the Board still don't get granted. Disputes about whether the veteran served in a qualifying location. Conditions the veteran believes should be presumptive but aren't on the official list. Evidence problems on the diagnosis itself. "Presumptive" doesn't mean "automatic." WHAT THIS MEANS FOR YOUR CLAIM A few patterns are worth sitting with: The connection type matters, but the specifics matter more. A secondary claim can win 75% of the time or 4.9% of the time depending on the chain. Lumping them together at 35.1% hides more than it reveals. Medical rationale is the through-line. The chains with strong approval all have well-documented, intuitive medical pathways. The chains with weak approval tend to have thinner or more contested ones. Presumptive lowers the bar but doesn't remove it. Even with the legal presumption in place, nearly half of presumptive claims at the Board don't result in grants. Evidence quality still matters. The 29.5% overall average is a floor, not a ceiling. Narrow the lens to specific connection types, specific chains, and strong evidence, and the numbers shift dramatically. THE CAVEAT I CAN'T AVOID This analysis shows correlation between connection type and outcome, not causation. The data can't isolate whether the connection type itself drives the result or whether it's a proxy for other factors like evidence quality, the strength of the underlying medical relationship, or how well the case was presented. It could be that the same veteran with the same evidence would get a different outcome depending on which connection type they pursued. It could also be that the connection type is just reflecting the strength of the medical relationship. Both interpretations are defensible. The numbers still describe what's happening in the record. BOTTOM LINE Presumptive leads at 46.9%. Direct and aggravation cluster around 41%. Secondary averages 35.1% but ranges from 4.9% to 75% depending on the chain. The strength of the medical relationship between conditions is probably the single biggest differentiator in secondary claim outcomes. Veterans whose chains align with well-established medical literature show up in this dataset with significantly better odds than those pursuing thinner or more contested pathways. That's not advice. It's what the numbers show across 101,518 cases. *** Educational intelligence, not legal advice. Per 38 CFR § 14.629, only VA-accredited representatives may provide individualized guidance. Patterns drawn from Claim Raven's analysis of 101,518 BVA decisions across 185 conditions. For deeper condition-specific analysis, visit claimraven.com.

If you're filing secondary, the specific chain matters more than the category. Strong medical literature + intuitive pathway = the chains winning at 75%. Thin or contested pathway = the chains losing at 4.9%. Know which one yours looks like before you file.

The honest caveat: This is correlation, not causation. We can't isolate whether the connection type itself drives outcomes, or whether it's a proxy for evidence quality and the strength of the underlying medical relationship. Probably both. The numbers still hold.

Anxiety secondary to tinnitus wins 4.9% of the time at the Board. TBI secondary to depression wins 75%. Same connection type. Roughly 15 to 1 in outcomes. The specific chain you file matters more than almost anything else about your claim.