How the VA rates radiculopathy and nerve damage

The pain that runs from a bad back down a leg, or from a bad neck down an arm, is not part of the back rating. It is a separate condition with its own code, its own rating, and, if both sides are involved, a bonus on top. It is also the rating veterans most often fail to claim.

Last reviewed August 2026 · Not legal advice, VA.gov always controls

Radiculopathy is nerve root irritation where a nerve leaves the spine, producing pain, numbness, tingling, or weakness along the path of that nerve into a limb. Sciatica is the common name for the lumbar version. Peripheral neuropathy is damage to the nerve further along, from diabetes, toxic exposure, or injury. Both are rated under the peripheral nerve codes in 38 CFR § 4.124a, and both use the same four-word scale.

The scale: mild, moderate, moderately severe, severe

Each nerve has its own diagnostic code, and each code has a rating for complete paralysis (the nerve does nothing) and a set of lower ratings for incomplete paralysis, graded by severity. The sciatic nerve, DC 8520, is the one that matters for most lower-back radiculopathy:

Cervical radiculopathy into an arm is rated under the upper-extremity nerve codes, usually the upper radicular group (DC 8510), middle radicular group (DC 8511), or lower radicular group (DC 8512), depending on which nerve roots are involved, with separate percentages for the dominant and non-dominant arm. The same mild-to-severe scale applies. The examiner identifies the nerve; you do not need to.

Why this rating is separate from the spine

The spine rating formula in § 4.71a measures range of motion. Note (1) to that formula directs the rater to evaluate "any associated objective neurologic abnormalities, including, but not limited to, bowel or bladder impairment, separately, under an appropriate diagnostic code." Radiculopathy is the most common such abnormality. It is not double-counting, because the back rating compensates the back and the nerve rating compensates the limb. The spine guide covers the motion side.

Here is what that does to a typical claim. A lumbar strain at 20% with sciatica rated mild in each leg:

• Two leg ratings at 10% each combine to 19%, and because they are paired limbs, the bilateral factor under § 4.26 adds 10% of that: 19% + 1.9% = 20.9%, treated as 21%.
• 21% combined with the 20% back gives 36.8%, which rounds to 40%.

The same back, with the leg symptoms never claimed, is 20%. That is the size of the gap, and it comes from two conditions most veterans mention at the exam as a symptom of their back and never list as a claim. The combined rating guide walks through the math in full.

Claim it by name

On the 21-526EZ, list each limb separately: "radiculopathy, left lower extremity, secondary to lumbar spine condition" and the same for the right. If you only write "lower back condition," the rater may or may not infer the nerve claim from the exam findings. Some do, under the duty to consider all evidence. Many do not, and you then have a supplemental claim to file rather than a rating. Name it.

Service connection

Radiculopathy is almost always claimed as secondary to the spine condition that causes it, under § 3.310. If the back is already service connected, the nerve follows, with a medical finding (usually the examiner's own) that the radiculopathy is associated with the service-connected spine. No separate nexus letter is needed in the ordinary case, because the DBQ for the spine asks directly whether radiculopathy is present and which nerve root is involved.

Peripheral neuropathy on other theories has its own routes: it is presumptive for diabetes-related neuropathy once diabetes is service connected, it is an Agent Orange presumptive (early-onset peripheral neuropathy) under § 3.309(e), and it can be claimed secondary to chemotherapy, alcohol use disorder secondary to a mental health condition, or medication. See the presumptive conditions guide and the secondary conditions guide.

The exam

Nerve findings come from the spine DBQ's neurological section or from a dedicated peripheral nerves DBQ. The examiner tests reflexes, strength, and sensation, and records which roots or nerves are involved and whether the severity is mild, moderate, moderately severe, or severe. Three things to do:

1. Describe the path of the symptom precisely: "from my lower back down the outside of my right leg into the top of my foot," not "my leg hurts."
2. Report weakness and its consequences: tripping, foot drag, dropping things, buttons. These are the motor findings that lift the rating past the sensory cap.
3. Bring any EMG or nerve conduction study. Objective testing is the strongest evidence that the involvement is not wholly sensory.

Read Preparing for a C&P exam for the general approach.

The checklist

1. Each affected limb listed as its own claimed condition.
2. Treatment records documenting the radiating symptoms and any weakness or reflex loss.
3. Imaging (MRI) showing the nerve root involvement, if you have it.
4. EMG or nerve conduction study results, if done.
5. A statement on what the limb symptoms stop you from doing: standing, walking distance, stairs, grip.