38 CFR Radiculopathy Ratings: Codes, Caps, and Bilateral Factor

The VA rates radiculopathy under the peripheral nerve codes in 38 CFR 4.124a rather than as a stand-alone condition, and your percentage depends on which nerve root is compressed and how much function you have lost. Ratings run from 10% for mild symptoms up to 80% for complete paralysis of the sciatic nerve, with several caps and special rules that can push a VA radiculopathy rating higher or lower than the raw severity of your symptoms might suggest. There is no diagnostic code labeled “radiculopathy.” The VA identifies the affected nerve and rates the impairment on that nerve’s schedule.

How the VA Classifies Nerve Impairment

38 CFR 4.124a groups nerve damage into three categories: paralysis, neuritis, and neuralgia. Paralysis covers the broadest range of impairment and carries the highest potential ratings. Neuritis involves loss of reflexes, muscle wasting, sensory problems, and constant pain, but the regulation caps it below the paralysis maximum. Neuralgia is the mildest classification, described as dull, intermittent pain along a recognizable nerve path, and its ceiling is lower still. The category the examiner assigns sets the highest percentage you can receive, regardless of how bad the symptoms feel day to day.

Within paralysis, the VA draws a line between complete and incomplete. Complete paralysis means the affected body part is essentially nonfunctional. For the sciatic nerve, that looks like a foot that dangles and drops with no active movement below the knee. Incomplete paralysis means you have lost some function but not all, and the regulation defines it as impairment “substantially less than the type picture for complete paralysis.”¹ Most veterans with radiculopathy fall somewhere in the incomplete range.

Sciatic Nerve Ratings (Diagnostic Code 8520)

The sciatic nerve is the one most often rated in radiculopathy claims because it runs from the lower spine through the buttock and down each leg. Lumbar disc herniations and degenerative spine conditions frequently compress the nerve roots that feed into it. Under Diagnostic Code 8520, incomplete paralysis of the sciatic nerve is rated at four severity levels:

Mild (10%): intermittent tingling, slight numbness, or minor pain with only minimal functional limitation.
Moderate (20%): more persistent numbness, noticeable pain, or sensory loss that meaningfully interferes with leg function.
Moderately severe (40%): significant motor or reflex impairment beyond sensory symptoms, including reduced strength, diminished reflexes, and functional limitations in walking or standing.
Severe with marked muscular atrophy (60%): pronounced muscle wasting that can be measured, along with major loss of motor function and reflexes.

Complete paralysis of the sciatic nerve, where the foot dangles and drops, no muscles below the knee can move, and knee flexion is weakened or lost, warrants an 80% rating.² The jump from 40% to 60% is where many claims stall. The VA wants measurable muscle atrophy, meaning an actual difference in limb circumference between your affected and unaffected sides, not just reported pain or weakness.

Other Nerves Commonly Involved in Radiculopathy

Cervical radiculopathy from neck conditions and upper lumbar radiculopathy affect different nerves, each with its own code and rating schedule.

Femoral Nerve (Diagnostic Code 8526)

The femoral nerve controls the quadriceps at the front of the thigh. Upper lumbar disc problems can compress the roots that form it. Incomplete paralysis is rated at 10% (mild), 20% (moderate), or 30% (severe). Complete paralysis, meaning full loss of quadriceps function, rates at 40%.¹ The femoral schedule has no “moderately severe” tier, so the rating jumps directly from moderate to severe.

Median Nerve (Diagnostic Code 8515)

Cervical radiculopathy at the C6 or C7 level can affect the median nerve, which controls grip strength and sensation in the thumb, index, and middle fingers. For the dominant hand, severe incomplete paralysis rates at 50% and complete paralysis at 70%. For the non-dominant hand, those figures drop to 40% and 60%.¹ Mild incomplete paralysis rates at 10% regardless of which hand is affected.

Ulnar Nerve (Diagnostic Code 8516)

The ulnar nerve controls the ring and little fingers and much of the hand’s fine motor ability. Cervical radiculopathy at C8-T1 can impair it. Complete paralysis produces a “griffin claw” deformity with severe muscle wasting and rates at 60% for the dominant hand or 50% for the non-dominant hand. Severe incomplete paralysis rates at 40% (dominant) or 30% (non-dominant), and moderate rates at 30% or 20%.¹

Major Versus Minor Extremity

For upper extremity nerves, the VA assigns a higher rating when the impairment affects your dominant hand (the “major” side) and a lower rating for the non-dominant hand (the “minor” side). The VA determines which hand is dominant from evidence in your file or from testing during a VA examination. If you are ambidextrous, the VA treats your injured hand, or the more severely injured hand, as dominant.³ Lower extremity nerves like the sciatic and femoral do not use this distinction. The rating is the same for either leg.

Rating Caps That Can Limit Your Percentage

Two rules can cap your rating below what the paralysis scale would otherwise allow. Both explain many rating decisions that seem too low at first glance.

The Wholly Sensory Rule

When your radiculopathy produces only sensory symptoms (pain, tingling, numbness) with no motor deficits like weakness or muscle atrophy and no reflex changes, the VA rates it at the mild level, or at most the moderate level.¹ A veteran with severe radiating leg pain but normal strength and reflexes on examination will likely receive no more than 20% for that nerve. Breaking through the moderate ceiling requires documented motor impairment or reflex abnormalities.

Neuritis and Neuralgia Caps

If the VA classifies your nerve condition as neuritis rather than paralysis, the maximum rating is severe incomplete paralysis. You cannot reach the complete paralysis tier. Neuritis that lacks objective organic changes such as documented muscle atrophy or loss of reflexes is further capped at moderate incomplete paralysis, with one exception: sciatic nerve neuritis without organic changes can go up to moderately severe.⁴

Neuralgia carries the tightest cap. The maximum for peripheral neuralgia is moderate incomplete paralysis, period.⁵ For the sciatic nerve, a neuralgia diagnosis limits you to 20% even if your symptoms are debilitating. The diagnostic label your examiner uses matters as much as the severity description.

What the C&P Examiner Measures

The Compensation and Pension exam is where the rating is set. The examiner fills out a standardized Disability Benefits Questionnaire for peripheral nerves, and the specific findings on that form drive the rater’s decision.

Muscle strength is tested on a 0-to-5 scale, where 5/5 is normal and 0/5 is no movement at all. For the sciatic nerve, the examiner tests ankle dorsiflexion, knee flexion, and toe extension. Deep tendon reflexes are graded from 0 (absent) to 4+ (hyperactive with clonus), with 2+ considered normal.⁶ If muscle atrophy is present, the examiner must measure the circumference of both the affected and unaffected limbs at the point of maximum muscle bulk and record the difference in centimeters. The examiner also documents areas of decreased or absent sensation and notes whether your symptoms follow the expected distribution for the nerve.

If your symptoms are worst on bad days and you happen to feel decent during the exam, describe your typical functional limitations clearly. The examiner records what they observe and what you report, and a thorough description of flare-ups can support a higher rating even when exam-day findings are mild.

Separate Ratings for the Spine and the Nerve

Veterans with radiculopathy almost always have an underlying spinal condition such as degenerative disc disease, spinal stenosis, or a herniated disc. A note in the spine rating formula requires the VA to evaluate neurological abnormalities like radiculopathy separately from the spinal condition under the appropriate nerve diagnostic code.⁷ You should receive a spine rating (based on range of motion or incapacitating episodes) and a separate radiculopathy rating for each affected nerve.

The anti-pyramiding rule in 38 CFR 4.14 prohibits the VA from rating the same functional loss twice.⁸ Radiculopathy and limited spinal motion are distinct impairments, though. Restricted range of motion is a musculoskeletal problem. Weakness, numbness, or muscle wasting in a leg or arm is a neurological problem. If a rater denies a separate radiculopathy rating on pyramiding grounds, the spine formula’s own note supports an appeal.

Secondary Service Connection

If your spinal condition is already service-connected and radiculopathy develops later as a consequence, you can claim radiculopathy as a secondary disability. Under 38 CFR 3.310, a disability caused or aggravated by a service-connected condition qualifies for service connection.⁹ A diagnosis alone is not enough. You need a medical opinion linking the radiculopathy to the service-connected spine condition, usually by identifying the specific disc or vertebral level causing nerve compression.

Intervertebral Disc Syndrome and Incapacitating Episodes

When radiculopathy stems from intervertebral disc syndrome, the VA has a second method for rating the spinal condition itself, based on incapacitating episodes rather than range of motion. An incapacitating episode is a period of acute symptoms that requires bed rest prescribed by a physician. The VA uses this formula only when it produces a higher rating than range of motion:

60%: incapacitating episodes totaling at least 6 weeks in the past 12 months.
40%: at least 4 weeks but less than 6 weeks.
20%: at least 2 weeks but less than 4 weeks.
10%: at least 1 week but less than 2 weeks.

The key word is “prescribed.” Staying in bed on your own because the pain is unbearable does not count. A physician must specifically order bed rest and document it in your medical records.¹⁰ Veterans with frequent flare-ups should ask their treating physician to prescribe and document bed rest rather than tough it out without a paper trail.

The Bilateral Factor

When radiculopathy affects both legs or both arms, the VA applies a bilateral factor that increases the combined rating. The VA first assigns a separate rating for each extremity, then combines those two ratings using standard VA combination math. After that combined value is calculated, 10% of it is added to the result before any further combinations.¹¹

The bilateral factor applies whenever compensable disabilities affect paired extremities, including all four. The regulation treats “arms” and “legs” broadly: a disability in the thigh paired with one in the opposite foot still triggers the bilateral factor because both lower extremities are involved. The factor only kicks in when each side has at least a 10% rating.

When Radiculopathy Supports a TDIU Claim

Veterans whose radiculopathy, alone or with other service-connected disabilities, prevents them from holding substantially gainful employment may qualify for Total Disability based on Individual Unemployability. TDIU pays compensation at the 100% rate even when the combined schedular rating is less than 100%. The threshold is a single disability rated at 60% or more, or a combined rating of 70% or more with at least one disability rated at 40% or more.¹²

Bilateral radiculopathy combined with a spine rating often pushes veterans above the 70% combined threshold. A veteran with a 40% thoracolumbar spine rating and bilateral sciatic radiculopathy at 20% each, for example, reaches that range after the bilateral factor. The deciding question is whether the disabilities actually prevent employment. The VA weighs work history, education, and functional limitations documented in medical records, not just the percentage on paper.