Conversion Disorder (Functional Neurological Symptom Disorder) is rated by the U.S. Department of Veterans Affairs under DC 9424 of 38 CFR § 4.130, DC 9424 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.
Conversion Disorder, termed Functional Neurological Symptom Disorder in the DSM-5, involves one or more symptoms of altered voluntary motor or sensory function, such as limb weakness or paralysis, abnormal gait, non-epileptic seizures, tremor, numbness, blindness, or aphonia, that are not explained by a recognized neurological or medical condition. Diagnosis rests on positive clinical findings of incompatibility with known disease (for example Hoover sign for functional leg weakness or characteristic features of psychogenic non-epileptic seizures on video EEG), not merely on the absence of an organic explanation. The deficits are genuine and involuntary rather than feigned, and they frequently emerge or worsen in the setting of psychological stress, trauma, or a co-occurring mental health condition.
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.