VA PTSD Evidence Guide: Stressor Corroboration, Records, and Lay Statements

Every initial claim for post-traumatic stress disorder must satisfy three distinct evidentiary prongs: first, a formal DSM-5 diagnosis of PTSD established by an authorized mental health provider; second, credible objective or corroborating evidence that an in-service stressor occurred; and third, a competent medical opinion confirming that the in-service stressor is causally related to the current PTSD diagnosis.

When a veteran engaged in combat with the enemy, 38 CFR 3.304(f)(1) establishes that their personal lay testimony alone is sufficient to corroborate the occurrence of the claimed stressor, provided the stressor is consistent with the circumstances of service. Military decorations such as the Purple Heart, Combat Action Ribbon, Combat Infantryman Badge, or Combat Medical Badge serve as definitive objective proof of combat engagement.

For traumatic events that did not involve direct combat (such as vehicle crashes, training fatalities, explosions, or natural disasters), the veteran's lay statement is not legally sufficient on its own. The VA requires independent corroboration through official records, including military unit morning reports, after-action reports, command investigation logs, line of duty determinations, or contemporaneous medical entries.

Because sexual assault and harassment are rarely recorded in official military personnel files, 38 CFR 3.304(f)(5) allows veterans claiming PTSD due to personal assault or MST to submit secondary markers. Markers include sudden changes in performance appraisals, requests for emergency transfers, medical visits for somatic complaints or STDs, deterioration in conduct, pregnancy tests, or statements from civilian counselors, family, or fellow service members.

Detailed lay statements from spouses, fellow service members, or supervisors provide invaluable corroboration of functional impairment. Buddy statements submitted on VA Form 21-10210 can document observable behavioral changes: increased alcohol use, social isolation, rage reactions, insomnia, and hypervigilance before and after the in-service trauma.

Continuous private psychiatric records, VA Vet Center counseling logs, and prescription histories demonstrate chronicity of symptoms. If submitting private medical evidence, an authorized Disability Benefits Questionnaire (DBQ) completed by a board-certified psychiatrist or doctoral-level clinical psychologist provides raters with standardized rating criteria under 38 CFR 4.130.