VA Disability Rating for Radiculopathy: A Complete Guide (2026)

If pain, numbness, or weakness radiates from your back down into your leg, or from your neck out into your arm and hand, you may be dealing with radiculopathy, a nerve condition that VA rates completely separately from the back or neck condition that usually causes it. A lot of veterans who file for a back claim never realize they are leaving a second, often significant rating on the table simply because no one specifically claimed the nerve involvement.

This guide explains how VA rates radiculopathy under the peripheral nerve diagnostic codes, what evidence establishes service connection as either a direct or secondary claim, the most common reasons these claims get denied or missed entirely, and why the nexus letter has to do extra work when a claim involves two connected conditions instead of one.

What Radiculopathy Is and Which Nerves Are Involved

Radiculopathy occurs when a spinal nerve root is compressed or irritated, typically by a herniated disc, bone spur, or spinal stenosis, producing pain, numbness, tingling, or weakness along the path of that nerve rather than at the spine itself. It is claimed and rated as a distinct disability from the underlying back or neck condition, even though the two are almost always connected.

In the lower extremities, the sciatic nerve is most commonly involved, along with the femoral nerve depending on which lumbar level is affected. The L4 nerve root typically affects the knee and inner calf, L5 the outer calf and top of the foot, and S1 the back of the calf and bottom of the foot. In the upper extremities, cervical radiculopathy commonly involves the C5 through C8 nerve roots, affecting the shoulder, biceps, wrist, hand, and fingers depending on the level involved.

How VA Rates Radiculopathy Under the Peripheral Nerve Codes

VA rates radiculopathy under the diagnostic code for whichever specific nerve is affected. For lower extremity radiculopathy connected to the low back, that is most often the sciatic nerve, Diagnostic Code 8520, evaluated as incomplete or complete paralysis.

80 percent: Complete paralysis of the sciatic nerve, where the foot dangles and drops, with no active movement possible in the muscles below the knee and weakened or lost flexion of the knee.

60 percent: Severe incomplete paralysis with marked muscular atrophy.

40 percent: Moderately severe incomplete paralysis.

20 percent: Moderate incomplete paralysis.

10 percent: Mild incomplete paralysis. The large majority of radiculopathy claims connected to a back condition are rated at this level or the next, since most veterans have intermittent radiating pain and sensory changes rather than significant motor loss.

Radiculopathy affecting a different nerve, such as the femoral nerve for anterior thigh symptoms or one of the cervical nerve roots for arm and hand symptoms, is rated under that nerve's own diagnostic code using a similar mild-to-complete framework, though the exact percentages differ by nerve.

For 2026, following the 2.8 percent cost-of-living adjustment that took effect December 1, 2025, a veteran with no dependents receives $180.42 per month at 10 percent, $356.66 per month at 20 percent, $795.84 per month at 40 percent, and $1,435.02 per month at 60 percent. Because radiculopathy is rated separately from the spine condition that caused it, and bilateral lower extremity radiculopathy can trigger VA's bilateral factor, a well-documented claim can meaningfully increase a veteran's combined rating beyond the back or neck rating alone.

What Evidence Establishes Service Connection for Radiculopathy

Because radiculopathy is almost always claimed secondary to an existing back or neck condition, the evidence needed looks a little different from a standalone claim.

A documented neurological diagnosis. Positive findings on exam, such as diminished reflexes, sensory loss along a specific dermatome, or a positive straight leg raise test, along with imaging showing nerve root compression, give VA objective evidence beyond a description of pain alone.

An already service-connected spine condition, or a direct in-service nerve injury. Most radiculopathy claims are secondary to a service-connected back or neck condition. A smaller number arise from a direct in-service nerve injury, such as a laceration or crush injury.

A medical nexus connecting the nerve symptoms to the spine condition or in-service event. A provider needs to state, using VA's "at least as likely as not" standard, that the radiating pain, numbness, or weakness is caused by the specific spine condition already on the veteran's record, and should identify which nerve root and which side is affected.

Common Reasons Radiculopathy Claims Get Denied or Missed Entirely

Radiculopathy claims run into a specific, recurring set of problems.

The claim is never filed at all. Many veterans file for "back pain" and never separately claim the radiating leg or arm symptoms, leaving a compensable secondary condition completely unclaimed and unrated.

No objective neurological findings. A description of pain that radiates down the leg, without reflex testing, sensory exam findings, or imaging showing nerve involvement, gives VA little to confirm the diagnosis exists.

No nexus opinion connecting the nerve symptoms to the spine condition. Even with a clear diagnosis, VA needs a provider to state that this specific radiculopathy is connected to the specific already-service-connected back or neck condition, not simply that both conditions exist.

The wrong nerve or wrong severity level claimed. Radiculopathy affecting the femoral nerve rated as though it were sciatic nerve involvement, or symptoms described in a way that undersells genuine motor weakness, can result in a lower rating than the evidence actually supports.

Why the Nexus Letter Is Critical for Radiculopathy Claims

Because radiculopathy is a secondary condition layered on top of an existing spine diagnosis, the nexus letter has to connect two conditions clearly rather than one.

A strong nexus letter for a radiculopathy claim should:

• Identify the specific service-connected spine condition, or in-service injury, believed to be causing the nerve symptoms

• Identify the specific nerve and side affected, using anatomical terms VA raters can match to the correct diagnostic code

• State a clear medical opinion using the "at least as likely as not" language VA raters are trained to look for

• Reference objective findings such as reflex changes, sensory exam results, or imaging showing nerve root involvement

• Be written by a licensed medical provider who has reviewed the claims file and treatment history, not a generic template with a name inserted

A letter that only says "the veteran has leg pain that could be nerve related" leaves VA with nothing to tie to a specific diagnostic code or nerve. A letter that names the nerve, the side, and the connection to the already-documented spine condition gives a rater a clear basis to grant a separate, accurate rating for a condition that too often goes unclaimed.

Get Your Records Reviewed at No Cost

If you have a back or neck condition and have never had your radiating pain, numbness, or weakness separately evaluated, or you are not sure whether your existing records support a radiculopathy claim, the fastest way to find out is to have your records reviewed before you file or appeal. Nexus Letter Now offers a free records review so you can see where your claim stands and whether a nexus letter would strengthen it, with no payment required until your eligibility is confirmed.

Start your free records reviewand find out what your medical evidence needs to make your radiculopathy claim as strong as it can be.