If your service connected back condition sends pain, numbness, or tingling down a leg or arm, that neurological symptom is rated separately from the spine. This is not pyramiding, and it is explicitly contemplated by the rating schedule. It is also one of the most commonly missed increases in the entire system.
Two Separate Rating Systems
The spine itself
Lumbar conditions such as strain, DC 5237, degenerative arthritis, DC 5242, and intervertebral disc syndrome, DC 5243, are rated on the General Rating Formula for Diseases and Injuries of the Spine, which is driven almost entirely by measured forward flexion:
- Flexion greater than 60 but not greater than 85 degrees: 10%
- Flexion greater than 30 but not greater than 60 degrees: 20%
- Flexion 30 degrees or less: 40%
- Unfavorable ankylosis of the entire thoracolumbar spine: 50%
- Unfavorable ankylosis of the entire spine: 100%
The nerve
Radiating symptoms are rated under the peripheral nerve codes, most often DC 8520 for the sciatic nerve in the lower extremities:
- Mild incomplete paralysis: 10%
- Moderate incomplete paralysis: 20%
- Moderately severe incomplete paralysis: 40%
- Severe incomplete paralysis with marked muscular atrophy: 60%
- Complete paralysis, including foot drop: 80%
Critically, each affected extremity gets its own rating. Radiculopathy in both legs means two separate percentages, not one.
Why This Is Not Pyramiding
38 CFR 4.14 prohibits rating the same disability under multiple diagnostic codes. The spine formula and the nerve codes rate different manifestations: one measures orthopedic limitation of motion, the other measures neurological impairment of a specific nerve in a specific limb. The note to the General Rating Formula directs raters to evaluate any associated objective neurologic abnormalities separately under an appropriate diagnostic code. Separate ratings are the intended outcome.
Worked Example With the Bilateral Factor
A veteran has a 20% lumbar strain with mild radiculopathy in both legs, rated 10% each. Because both lower extremities are compensably rated, the bilateral factor under 38 CFR 4.26 applies.
- Combine the two legs: 10% and 10% combine to 19% raw.
- Bilateral factor: 10% of 19 is 1.9. Bilateral subtotal is 20.9%.
- Combine 20.9% with the 20% spine rating: 20.9 + (20% of the remaining 79.1) = 36.7% raw.
- Round to the nearest 10%: 40%, paying $795.84 per month in 2026.
The spine alone would have been 20%, paying $356.66. Filing the radiculopathy more than doubled the monthly payment.
What Evidence Actually Wins the Radiculopathy Claim
Raters look for objective findings, not just reported pain. The strongest files contain:
- A documented dermatomal pattern. Symptoms following a specific nerve root distribution, noted in a treatment record or the C&P exam.
- Reflex, sensory, or strength findings. Diminished ankle or knee reflexes, reduced light touch sensation, or measurable weakness on the affected side.
- Imaging that corroborates. An MRI showing disc herniation or foraminal stenosis at the level that matches your symptoms.
- EMG or nerve conduction studies. Not required, but they move a claim from arguable to obvious.
- A lay statement. Your own description of frequency, triggers, and functional impact, which supports the mild versus moderate distinction.
Check Your Decision Letter
If you have a rated back condition and your medical records mention radiating pain, sciatica, numbness, or tingling in a limb, look at your rating decision for a separate DC 8520 line. If it is not there, the neurological component was never rated. That is a claim for increase, and the evidence usually already exists in your file.
Read the full back pain rating guide →