Bipolar I Disorder is rated by the U.S. Department of Veterans Affairs under DC 9432 of 38 CFR § 4.130, DC 9432 across 6 severity tiers (0% / 10% / 30% / 50% / 70%…). Service connection requires (1) a current diagnosis, (2) an in-service event, injury, or exposure, and (3) a medical nexus opinion linking the two under 38 C.F.R. § 3.303.
Bipolar disorder is a chronic mood disorder defined by episodes of mania or hypomania (elevated or irritable mood with decreased need for sleep, grandiosity, pressured speech, racing thoughts, and impulsive high-risk behavior) that typically alternate with episodes of major depression. The DSM-5 distinguishes bipolar I (at least one full manic episode) from bipolar II (hypomania plus major depression), and impairment often persists between episodes through residual mood instability, cognitive disruption, and difficulty sustaining employment or relationships. The VA rates it as a mental disorder under Diagnostic Code 9432 using the General Rating Formula in 38 CFR 4.130.
Rating criteria text quoted verbatim from 38 C.F.R. § 4.130 (Mental disorders). Source verified 2026-05-15 by ClaimRecon Editorial Team against the Cornell Law CFR mirror; eCFR.gov is the authoritative government source.