Building a Strong Disability Claim

How the VA Decides Your Claim

VA raters are not doctors. They are trained decision-makers who weigh your evidence against the Schedule for Rating Disabilities — a federal regulation called 38 CFR Part 4 — and assign a percentage based on where your documented symptoms fall in the rating criteria. They work from paper. They have never met you. They make their decision based entirely on what is in your file.

Every disability claim requires three elements to succeed. If any one of the three is missing or weak, the claim fails at that element — regardless of how real or severe the underlying condition is. These are the three things a rater is looking for:

These three elements are known as the Caluza Triangle — the framework the Court of Appeals for Veterans Claims established in Caluza v. Brown (1995). Understanding why all three are required, and exactly what happens to a claim when any one of them is missing, is the single most useful thing you can learn about how the system works. Read the full Caluza Triangle guide →

Service Treatment Records: Start Here

Your service treatment records (STRs) are the documentary foundation of your claim. They show what was documented during your service — sick call visits, injuries, complaints, physical examinations, hospitalizations, and treatment notes. Every entry that relates to a condition you are claiming is evidence of an in-service event. Every entry that does not relate to your claimed conditions is simply noise.

Request your STRs using Standard Form 180 before you file anything. Processing through the National Personnel Records Center takes 60 to 90 days for most veterans. Review every page when they arrive. What you are looking for:

• Any mention — even a minor one — of the conditions you intend to claim. A single sick call entry for knee pain documented in 1998 is evidence. It does not need to be dramatic.
• Physical examination findings from your entrance and separation physicals (DD Forms 2808 and 2807). If a condition was noted on entry, that creates a baseline. If it was not noted on entry but appeared during service, that is evidence of an in-service event.
• Profile assignments (P3, P4), light duty restrictions, or duty-limiting conditions that document your unit was aware of a physical problem.
• Any treatment, referral, or prescription that relates to your claimed conditions — even if the visit was for something else.
• Notes from flight physicals, diving physicals, or other specialized medical evaluations that document conditions relevant to your claims.

The Nexus Letter: Your Most Important Document

A nexus letter is a written medical opinion from a physician that explicitly connects your current diagnosis to your military service. It is the single most impactful document most veterans are missing from their claims — and the one that, when added, most often makes the difference in a claim's outcome.

The VA orders C&P exams partly to generate its own nexus opinions. But VA examiners working for contractors like QTC and VES are often rushed, completing multiple exams per day, and their opinions tend to be brief. A well-written nexus letter from a physician who genuinely reviewed your records, spent time understanding your case, and wrote a thorough medical rationale is more credible and more detailed than a typical contractor's C&P report.

What Makes a Nexus Letter Strong

• Written on the physician's letterhead and signed with credentials
• States explicitly that the physician reviewed your service treatment records, medical records, and relevant history — not just that they examined you today
• Summarizes the relevant in-service history — what happened during service that relates to this condition
• Provides the current diagnosis with clinical findings that support it
• Contains the magic words: "It is at least as likely as not" that the condition is related to military service — exactly that phrase, or its equivalent
• Provides a medical rationale explaining why — not just a conclusion, but the reasoning behind it. The more detailed the rationale, the more weight it carries with the rater.

Where to Get a Nexus Letter

Any licensed physician can write a nexus letter. Start with physicians who already know you — your VA primary care provider, any specialist you have seen, or your private doctor. If your VA provider is willing, a nexus letter from a VA physician carries real weight because it comes from within the system.

If your existing providers are not willing or are unfamiliar with the VA nexus process, telehealth services that specialize in VA nexus letters are widely available. Typical cost is $300 to $900 depending on the complexity of the case and the number of conditions. For a claim that could mean years of back pay at elevated rates, this investment often makes a meaningful difference in the outcome. The key is finding a physician who will actually review your records thoroughly, not just generate a template letter — so ask for a sample before engaging.

Disability Benefits Questionnaires (DBQs)

DBQs are the structured medical forms examiners complete during C&P exams. There is a separate DBQ for each condition type — back conditions, PTSD, knee injuries, hearing loss, sleep apnea, and dozens of others. Each DBQ is designed to elicit exactly the clinical information the rater needs to assign a rating under the relevant diagnostic code.

What most veterans do not know: private physicians can complete DBQs. You can download the relevant DBQ from VA.gov, bring it to your physician, and ask them to complete it based on a thorough examination and review of your records. A completed private DBQ submitted with your claim can be more favorable than a rushed contractor C&P exam — because your physician knows you and has time to be thorough.

For musculoskeletal conditions, the DBQ includes range of motion measurements. Have your physician use a goniometer and measure carefully. For mental health conditions, the DBQ asks about specific symptoms and functional impairment levels that map directly to the rating criteria. A physician who understands the rating system will fill out the DBQ in a way that accurately captures where your symptoms fall.

Buddy Statements: Lay Evidence That Wins Claims

A buddy statement — formally a lay statement filed as VA Form 21-10210 — is a written statement from someone who has firsthand knowledge of your condition, how it began, or how it affects your life. The VA is required by law to consider lay evidence. A well-written buddy statement can establish facts that medical records may not — particularly for conditions that developed gradually, conditions that affect daily life in ways that do not show up in a clinical visit, and for filling gaps in service records.

Buddy statements can come from fellow service members who witnessed an injury or the conditions you were exposed to, from a spouse who observes daily limitations, from coworkers who have seen you struggle at work, or from anyone who can speak from direct personal observation about what they have witnessed. The key word is observation — buddy statements are most credible when they describe what the person saw, not what they were told.

The most effective buddy statements are specific. Compare these two approaches:

• Weak: "I have known John for fifteen years and his back seems really bad."
• Strong: "I was present when John fell from the vehicle on [approximate date and location]. I helped carry him to the aid station. Since his discharge, I have observed him unable to carry groceries from his car, leave family events early due to pain, and decline invitations to activities he previously enjoyed. On visits to his home, I have observed him lying on the floor to manage pain multiple times per visit."

The second version describes specific events, specific observations, and a pattern over time. That is the kind of statement raters take seriously.

Your Personal Statement: The Evidence Only You Can Provide

You are a competent lay witness to your own experience. A personal statement filed as a Declaration in Support (VA Form 21-10210) gives you the opportunity to describe in your own words exactly how your service-connected conditions affect your life. It is admissible evidence. Use it.

Write your personal statement covering: when the condition started and how it has progressed since service; what a more difficult day looks like in concrete terms; what you can no longer do that you used to do; how the condition affects work, family relationships, and social participation; any hospitalizations, ER visits, or crisis events; and the medications you take, what they are for, and what side effects they produce. Write it before any C&P exam and bring it with you.

Secondary Service Connection: Ratings Veterans Often Overlook

Secondary service connection means a new condition was caused or aggravated by a condition already service-connected. Every veteran who has been in the system for years should audit their service-connected conditions and ask: what else has this caused? Secondary conditions are often the fastest path to a significant rating increase because nexus is straightforward — you simply need a physician to opine that Condition B was caused by the already-connected Condition A.

Presumptive Conditions: No Nexus Required

Certain conditions are presumed by law to be service-connected for veterans who served in specific locations or time periods. For presumptive conditions, you do not need a nexus letter — you only need a current diagnosis and proof that you served in the qualifying location or time period. If you qualify, this is the simplest possible path to service connection.