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8518
§ 4.124a Schedule of ratings—neurological conditions and convulsive disorders.

Axillary nerve paralysis

Paralysis of the axillary nerve, which may cause weakness in shoulder movement and arm lifting.

What the rating means

Axillary nerve paralysis is rated under diagnostic code 8518 in VA's schedule for neurological conditions. The rating depends on whether the paralysis is complete or incomplete, and on which arm is affected — the major arm (your dominant arm) or the minor arm (your nondominant arm).

A complete paralysis, meaning abduction of the arm is impossible and outward rotation is weakened, is rated at 50% for the major arm and 40% for the minor arm. Incomplete paralysis is divided into three levels. Severe incomplete paralysis is rated at 30% for the major arm and 20% for the minor arm. Moderate incomplete paralysis is rated at 10% for either arm. Mild incomplete paralysis is rated at 0% for either arm.

Incomplete paralysis means a degree of lost or impaired function substantially less than complete paralysis, whether because of where along the nerve the injury occurred or because of partial regeneration. If the nerve loss is purely sensory — no motor involvement — the rating should be no higher than mild or, at most, moderate. If both arms are affected, VA rates each side separately and then combines the ratings, applying the bilateral factor.

Evidence that helps

Medical records and examination findings that document the function of the deltoid and teres minor muscles are central to this rating. For a complete paralysis rating, records should show that you cannot abduct your arm and that outward rotation is weakened. Strength testing, range-of-motion measurements, and electromyography or nerve conduction studies can all help show how much function has been lost and whether the paralysis is complete or incomplete.

For severe incomplete paralysis, findings would show significant but not total loss of deltoid or teres minor function. For moderate or mild levels, records would reflect progressively smaller deficits in strength or movement. If your condition is purely sensory, that distinction matters because the rating is capped at mild or moderate.

Statements from you or people who know you describing how shoulder weakness affects your daily tasks — lifting, reaching, carrying, or doing your job — can help show the functional impact at each level. Records from treating providers, physical therapists, or VA examiners that consistently document the degree of weakness over time are also useful. If both arms are involved, documentation for each arm separately will support the combined rating.

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.