VA Disability Rating for Radiculopathy: Codes and Severity (2026)

What Radiculopathy Is

Radiculopathy is a neurological condition caused by compression, irritation, or inflammation of a spinal nerve root. As a nerve root exits the spine, it carries motor and sensory fibers that supply a specific anatomic distribution. When that nerve root is compromised by disc herniation, foraminal stenosis, spondylotic narrowing, or other pathology, the result is pain, numbness, paresthesia, or weakness in the corresponding dermatomal and myotomal distribution.

Lumbar radiculopathy presents with radiating symptoms down the lower extremity along the distribution of L3, L4, L5, or S1 nerve roots. Cervical radiculopathy presents with radiating symptoms down the upper extremity along the distribution of C5, C6, C7, or C8 nerve roots. The clinical picture varies based on which root is affected.

Diagnosis: Clinical and Confirmatory Findings

Diagnosis of radiculopathy rests on clinical examination findings supplemented by imaging and electrodiagnostic studies.

Sensory Examination

The clinician maps sensory loss to a specific dermatomal distribution. L4 affects the medial calf and medial foot; L5 affects the lateral calf and dorsum of the foot; S1 affects the lateral foot and small toe; C6 affects the thumb and index finger; C7 affects the middle finger; C8 affects the ring and small fingers. The dermatomal pattern of sensory loss is highly specific to the affected nerve root.

Motor Examination

Motor examination tests strength in muscles innervated by the affected root. L4 weakens ankle dorsiflexion and quadriceps; L5 weakens great toe extension and ankle eversion; S1 weakens ankle plantarflexion. C6 weakens elbow flexion and wrist extension; C7 weakens elbow extension and wrist flexion; C8 weakens finger flexion and intrinsic hand muscles. Strength is typically graded on the 0–5 Medical Research Council scale.

Reflexes

Reflex changes correspond to specific roots: L4 affects the patellar reflex; S1 affects the Achilles reflex; C5–C6 affect the biceps reflex; C7 affects the triceps reflex.

Provocative Testing

Straight leg raise and crossed straight leg raise tests assess lumbar nerve root irritation. Spurling's test (cervical extension and rotation) reproduces upper extremity symptoms in cervical radiculopathy. Slump test, femoral stretch, and other maneuvers add specificity.

Imaging

MRI is the gold standard for visualizing nerve root compression. CT myelography is an alternative when MRI is contraindicated. Imaging findings should correspond to the clinical exam findings — concordance strengthens the diagnosis.

Electrodiagnostic Studies

EMG and nerve conduction studies can confirm axonal or demyelinating involvement, document the specific root affected, and characterize chronicity. EMG findings of denervation or reinnervation potentials provide objective evidence.

Lower Extremity Radiculopathy (Lumbar)

Lower extremity radiculopathy is most commonly rated under DC 8520 (sciatic nerve), which encompasses L4 through S3 contributions to the sciatic. Less commonly, separate ratings under DC 8521 (common peroneal/external popliteal) or DC 8522 (musculocutaneous) may apply when the clinical findings localize to a specific peripheral nerve.

DC 8520 — Sciatic Nerve

• 10 percent — Mild incomplete paralysis.
• 20 percent — Moderate incomplete paralysis.
• 40 percent — Moderately severe incomplete paralysis.
• 60 percent — Severe incomplete paralysis with marked muscular atrophy.
• 80 percent — Complete paralysis: the foot dangles and drops, no active movement possible of muscles below the knee, flexion of knee weakened or (very rarely) lost.

DC 8521 — External Popliteal Nerve (Common Peroneal)

Rated 10/20/30/40 percent for mild/moderate/severe incomplete paralysis or complete paralysis (foot drop and slight droop of first phalanges of all toes, cannot dorsiflex foot, extension of proximal phalanges of toes lost, abduction of foot lost, adduction weakened, anesthesia covers entire dorsum of foot and toes).

DC 8522 — Musculocutaneous Nerve (Superficial Peroneal)

Rated 0/10/20 percent for mild/moderate/severe or complete paralysis (eversion of foot weakened).

Upper Extremity Radiculopathy (Cervical)

Upper extremity radiculopathy is rated under either the radicular group codes or the specific peripheral nerve codes, depending on which clinical findings predominate.

Radicular Group Codes

DC 8510 (upper radicular group, fifth and sixth cervicals), DC 8511 (middle radicular group), DC 8512 (lower radicular group), and DC 8513 (all radicular groups) are used when the clinical picture aligns with a defined cervical radicular distribution. Ratings differ between dominant and non-dominant arm and range from 20 to 90 percent depending on severity and dominance.

Specific Peripheral Nerve Codes

DC 8516 (ulnar), DC 8515 (median), and DC 8514 (musculospiral/radial) are used when the findings localize to a specific peripheral nerve rather than a radicular group. Ratings range based on dominance and severity.

Dominant vs Non-Dominant Arm

As with shoulder ratings, the dominant arm receives higher ratings than the non-dominant arm for the same clinical severity. Veterans must self-identify their dominant side.

Severity Levels Explained

The VA does not provide rigid quantitative thresholds for severity. The clinical examination findings drive the determination, and a thorough nexus letter or examination report should characterize the severity using objective findings.

Mild Incomplete Paralysis

Subjective sensory complaints (paresthesia, numbness) without significant motor or reflex findings. Strength preserved or only minimally reduced. Reflexes preserved.

Moderate Incomplete Paralysis

More significant sensory loss — clearly demarcated dermatomal pattern. Mild motor weakness on examination (4/5 strength). Diminished or absent reflexes corresponding to the affected root. EMG findings may show acute or subacute changes.

Moderately Severe Incomplete Paralysis

Substantial sensory loss with clear motor involvement. Measurable strength deficit (3/5 or 4/5). Reflex changes consistent. EMG shows clear evidence of axonal involvement. Functional impact is significant.

Severe Incomplete Paralysis

Marked motor and sensory involvement, including muscle atrophy on examination. Strength substantially reduced (2/5 or 3/5). EMG shows extensive denervation or chronic neurogenic changes. Substantial functional impact.

Complete Paralysis

No functional movement of muscles innervated by the affected nerve. Maximum severity rating under the applicable code.

The Bilateral Factor

Under 38 CFR 4.26, when both lower extremities or both upper extremities are affected by separately rated conditions, the VA adds a bilateral factor adjustment to the combined rating. The bilateral factor is calculated as 10 percent of the combined value of the bilateral conditions, then added to that combined value before being combined with other ratings.

For radiculopathy claims, this means that bilateral lumbar radiculopathy (rated separately for each leg) carries a bilateral factor adjustment. The same applies to bilateral cervical radiculopathy. The bilateral factor can produce meaningful additional compensation when both extremities are involved.

Why Radiculopathy Is Separate From the Spine Rating

The General Rating Formula for Diseases and Injuries of the Spine under 38 CFR 4.71a addresses limitation of motion and incapacitating episodes. The Note (1) following the formula specifically directs raters to evaluate any associated objective neurologic abnormalities (including radiculopathy) separately under an appropriate diagnostic code. This is not pyramiding; it reflects that the orthopedic spine rating and the neurological radiculopathy rating address different functional impairments.

The combined effect of the spine rating and the radiculopathy ratings is computed using the VA combined ratings table. For veterans with significant bilateral lower extremity radiculopathy, the combined rating can substantially exceed the spine rating alone.

Evidence That Strengthens a Radiculopathy Claim

A defensible radiculopathy rating analysis rests on the following evidence.

Neurological Examination Findings

Detailed examination documenting sensory loss in a dermatomal distribution, motor strength testing for muscles innervated by the affected root, reflex changes, and provocative testing results.

Imaging

MRI showing the structural cause of nerve root compression. The imaging should correspond anatomically to the clinical exam findings.

Electrodiagnostic Studies

EMG and nerve conduction studies confirming the affected root and characterizing axonal versus demyelinating involvement and chronicity.

Symptom Documentation

Treatment records over time describing pain distribution, severity, paresthesia, weakness, and functional impact.

Treatment Trials

Records of conservative treatment (physical therapy, epidural injections, oral medications) and any surgical intervention.

Functional Documentation

Statements describing how the radiculopathy affects daily activities, occupation, and quality of life.

Medical Nexus Opinion (When Service Connection Is Contested)

A licensed physician's opinion articulating that the radiculopathy is at least as likely as not related to a service-connected spine condition or to an in-service event, with detailed medical rationale.