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8721
§ 4.124a Schedule of ratings—neurological conditions and convulsive disorders.

Common peroneal nerve pain (neuralgia)

Nerve pain affecting the common peroneal nerve near the knee, which may cause discomfort in the lower leg or foot.

What the rating means

VA rates common peroneal nerve neuralgia under diagnostic code 8721. Because this is neuralgia rather than paralysis, it is rated by analogy using the paralysis ratings for the common peroneal nerve under diagnostic code 8521, but the rating assigned will be no higher than moderate — meaning no more than 20% — when the condition is purely sensory (wholly sensory involvement). The possible ratings are 10%, 20%, 30%, and 40%, with 40% reserved for complete paralysis. Incomplete paralysis is rated at 10% for mild, 20% for moderate, and 30% for severe. The regulation also states that the ratings are for one side only; if both legs are affected, the two sides are rated separately and then combined with the bilateral factor applied.

Evidence that helps

Because neuralgia that is wholly sensory is rated at most at the moderate degree, medical records and examination findings that describe the character, frequency, and severity of your pain are central. Records showing the nerve's involvement — such as nerve conduction studies or electromyography — help establish the extent of impairment. A VA or private examination that documents whether your symptoms are limited to pain and sensory loss, or also include motor findings such as foot drop or weakness in dorsiflexion, helps VA determine the correct level. Statements from you or people who know you describing how pain limits walking, standing, or daily tasks support a finding of mild versus moderate involvement. If both legs are affected, records confirming bilateral involvement allow the bilateral factor to be applied when the two separate ratings are combined.

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.