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8620
§ 4.124a Schedule of ratings—neurological conditions and convulsive disorders.

Peripheral neuropathy

Nerve damage in extremities leading to numbness, pain, weakness

What the rating means

Peripheral neuropathy is rated under diagnostic code 8620 as neuritis, using the same rating formula as paralysis of the sciatic nerve (diagnostic code 8520). The possible ratings are 10%, 20%, 40%, 60%, and 80%, depending on how severely your nerve function is affected.

An 80% rating applies when paralysis is complete — the foot dangles and drops, no active movement of muscles below the knee is possible, and flexion of the knee is weakened or, very rarely, lost. Below that, incomplete paralysis is rated based on severity: mild is 10%, moderate is 20%, moderately severe is 40%, and severe with marked muscular atrophy is 60%.

Because the regulation covers "incomplete paralysis," it recognizes that your function may be substantially reduced without being fully lost. When the involvement is wholly sensory — meaning only sensation is affected and there is no motor loss — the rating may be assigned at the mild or, at most, moderate level. The ratings above are for one side of the body. If both sides are affected, VA combines the two ratings and applies the bilateral factor.

Evidence that helps

Medical records showing how your nerve function is affected are central to the rating. For the higher levels, records documenting complete or near-complete loss of movement below the knee, foot drop, or weakness of knee flexion would support an 80% rating. For the 60% level, records showing severe incomplete paralysis along with objective findings of marked muscular atrophy — such as measurements comparing limb circumference — are relevant.

For moderate or moderately severe ratings, examination findings that document specific deficits in motor strength, reflex loss, or sensory changes help show where your condition falls on the scale. Electrodiagnostic studies, such as nerve conduction studies or electromyography, can provide objective evidence of nerve damage and its extent.

If your neuropathy affects only sensation with no motor involvement, records and exam findings confirming that distinction matter, since the regulation limits purely sensory involvement to the mild or moderate range. Statements from you or people who know you describing how weakness, numbness, or loss of coordination affects your ability to walk, work, or carry out daily activities can help show the functional impact of your condition.

Secondary conditions

Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.