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8523
§ 4.124a Schedule of ratings—neurological conditions and convulsive disorders.

Deep peroneal nerve paralysis

Paralysis of the deep peroneal nerve, which may cause foot drop and numbness between the first and second toes.

What the rating means

VA rates paralysis of the deep peroneal nerve under diagnostic code 8523. The possible ratings are 30%, 20%, 10%, and 0%. The ratings cover one side at a time; if both legs are affected, VA rates each side separately and then combines them with the bilateral factor applied.

A 30% rating applies when the paralysis is complete, meaning dorsal flexion of the foot is lost entirely. When the paralysis is incomplete — meaning lost or impaired function is substantially less than complete paralysis — the rating depends on severity. Severe incomplete paralysis rates at 20%, moderate incomplete paralysis at 10%, and mild incomplete paralysis at 0%. When the nerve involvement is purely sensory, the regulation directs that the rating should be no higher than mild or, at most, moderate.

Evidence that helps

For a 30% rating, medical records and examination findings would need to show complete loss of dorsal flexion of the foot on the affected side. A VA or private examination documenting that you cannot lift the front of your foot at all is central to this level.

For incomplete paralysis, the records and findings that matter most are those that show how much function remains. Examination findings describing the degree of weakness, reduced range of motion, or sensory loss help establish whether the picture is mild, moderate, or severe. Nerve conduction studies or electromyography results that show the extent of nerve damage can support higher levels of incomplete paralysis. If your symptoms are sensory only, the regulation limits the rating to mild or moderate at most.

Statements from you or people who know you describing how foot drop or weakness affects your walking, work duties, or daily activities can help show functional impact at each level.

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.