Why it matters
VA's spine formula rates the spine itself. Associated neurological problems, like radiculopathy, are rated separately under the nerve codes (38 CFR § 4.124a). Each affected extremity gets its own rating, and radiculopathy in both legs or both arms can trigger the bilateral factor.
Sciatic nerve (DC 8520): lower extremities
| Rating | Level of paralysis |
|---|---|
| 10% | Mild incomplete paralysis |
| 20% | Moderate incomplete paralysis |
| 40% | Moderately severe incomplete paralysis |
| 60% | Severe incomplete paralysis, with marked muscular atrophy |
| 80% | Complete paralysis (foot dangles and drops, and so on) |
Upper-extremity radiculopathy from neck conditions is usually rated under the radicular nerve group codes (DC 8510–8513). Those ratings differ for your dominant and non-dominant arm.
Evidence that helps
- Documented symptoms: radiating pain, numbness, tingling, weakness, reflex changes
- EMG/nerve conduction studies and MRI findings (helpful, but not always required)
- A C&P exam that tests sensation, strength, and reflexes. See our C&P exam prep guide.
- Lay statements describing how symptoms affect walking, standing, sleep, and work
Back or neck rated, but not your legs or arms?
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Official sources
38 CFR 4.124a · 38 CFR 4.71a (spine)
Rating criteria summarized for general information. Read the full regulation for details. Last reviewed October 2026.