EDUCATIONAL TOOL ONLY. Not legal or medical advice. Not affiliated with the VA.
← All Condition GuidesCLAIM RECON INTEL
Sciatica (Sciatic Nerve Paralysis)
✓ VERIFIED AGAINST 38 C.F.R.§ 4.124a (Neurological conditions and convulsive disorders) · reviewed 2026-05-15 · ClaimRecon Editorial Team
Sciatica (Sciatic Nerve Paralysis) is rated by the U.S. Department of Veterans Affairs under DC 8520 of 38 CFR § 4.124a, DC 8520 across 5 severity tiers (10% / 20% / 40% / 60% / 80%). 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.
OVERVIEW
Pain, numbness, or weakness along the sciatic nerve from the lower back through the buttock and down the leg.
RATING CRITERIA (5 LEVELS)
10%
Mild incomplete paralysis of the sciatic nerve — intermittent posterior-leg pain/paresthesia, no objective motor weakness. § 4.124a sensory-only findings cap at this tier or moderate.
20%
Moderate incomplete paralysis — daily symptoms, mild objective motor weakness in plantar/dorsiflexion, sensory loss in sciatic distribution.
40%
Moderately severe incomplete paralysis — constant symptoms, marked motor weakness, significant atrophy. (DC 8520 uniquely includes this fifth tier between moderate and severe per § 4.124a.)
60%
Severe incomplete paralysis with marked muscular atrophy — sciatic distribution motor loss approaching but not reaching the complete-paralysis "foot dangles and drops" pattern.
80%
Complete paralysis of the sciatic nerve. Verbatim § 4.124a: "the foot dangles and drops, no active movement possible of muscles below the knee, flexion of knee weakened or (very rarely) lost."
KEY EVIDENCE TO GATHER
-Service treatment records showing injury or complaints
-Imaging (X-ray, MRI, CT)
-Range of motion measurements
-Flare-up documentation per Sharp v. Shulkin
-Buddy statements describing limitations
-Prescription history
-Physical therapy records
-Employment impact documentation
C&P EXAM TIPS (6)
1.Do NOT stretch, warm up, or take pain medication before your exam. The VA needs your baseline limitation.
2.Report your WORST day. DeLuca v. Brown requires documentation of functional loss during flare-ups.
3.Tell the examiner about flare-ups: frequency, duration, estimated ROM loss. Sharp v. Shulkin (2017) requires estimates.
4.Request active, passive, weight-bearing, and non-weight-bearing ROM testing per Correia v. McDonald (2016).
5.If you use assistive devices (brace, cane), bring them.
6.Describe daily activity impact: work, sleep, household tasks.
SOURCES & EDITORIAL
Rating criteria text quoted verbatim from 38 C.F.R. § 4.124a (Neurological conditions and convulsive disorders). Source verified 2026-05-15 by ClaimRecon Editorial Team during a regulation-text comparison against the Cornell Law CFR mirror; eCFR.gov is the authoritative government source.
EDUCATIONAL TOOL ONLY. NOT LEGAL OR MEDICAL ADVICE.
NOT AFFILIATED WITH THE U.S. DEPARTMENT OF VETERANS AFFAIRS.
CLAIM RECON 2026