Herniated Disc (Lumbar) is rated by the U.S. Department of Veterans Affairs under DC 5243 of 38 CFR § 4.71a, DC 5243 across 10 severity tiers (10% / 20% / 30% / 40% / 50%…). 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.
A lumbar herniated disc (also called a herniated nucleus pulposus, ruptured, slipped, or prolapsed disc) occurs when the soft inner gel of an intervertebral disc pushes through a tear in the tough outer annulus fibrosus in the lower back, most often at the L4-L5 or L5-S1 levels. The displaced disc material can compress or chemically irritate adjacent lumbar or sacral nerve roots, producing low back pain, limited and painful spinal motion, muscle spasm or guarding, and radiating leg pain, numbness, or weakness (sciatica/radiculopathy). For VA purposes it is rated as intervertebral disc syndrome under Diagnostic Code 5243, where the orthopedic loss of the lumbar spine and any separately ratable nerve involvement together drive the overall evaluation.
Rating criteria reference 38 C.F.R. Part 4 (Schedule for Rating Disabilities). This entry has not yet undergone editorial review against the live regulation text — consult the authoritative source directly before relying on the criteria shown.