Every winning claim rests on three pillars: a current diagnosed condition, an in-service event or injury, and a medical link — the nexus — between the two. Before anything else, write down each condition you live with and the service event that caused or worsened it. If a pillar is missing, that's what you fix first, not after a denial.
An intent to file (VA Form 21-0966, or starting a claim online) locks in your effective date and gives you up to a year to build the actual claim. This is free money most veterans leave on the table: your backpay is calculated from this date, not from the day you finally submit.
File the intent to file today, even if your evidence is months from ready. It costs nothing and protects your effective date.
Pull your service treatment records, VA medical records, and private treatment records. For conditions without an in-service diagnosis, buddy statements and a nexus letter from a qualified provider carry the claim. This is where claims are won or lost — a strong file makes the rater's decision easy.
Condition-specific evidence matters too — see our PTSD rating guide and tinnitus rating guide for exactly what raters look for.
File online at VA.gov, by mail, or in person. List every condition you're claiming — vague entries like "back problems" get vague ratings. Be specific: "lumbar strain with radiculopathy, right leg." Attach everything from step 3; a fully developed claim moves faster.
The VA will schedule a Compensation & Pension exam. Show up, be honest, and describe your worst days — not your best. Downplaying symptoms out of pride is the single most expensive mistake veterans make. After the exam, the VA issues a decision letter with your rating. If it's wrong, you have options — see our appeals service.