Separation of muscle (nontraumatic), left shoulder

This code signifies a non-traumatic detachment or tearing of muscle fibers in the left shoulder region. It indicates a spontaneous or atraumatic muscle separation, distinct from injuries caused by external forces. This condition can lead to pain, weakness, and impaired range of motion in the affected shoulder.

Apply this code when documentation clearly states a non-traumatic separation or rupture of a muscle in the left shoulder. This typically involves conditions like spontaneous muscle tears, degenerative muscle changes leading to separation, or muscle avulsions not attributed to an acute injury. Supporting documentation should specify the non-traumatic etiology.

• Ensure documentation explicitly states "nontraumatic" or "spontaneous" to differentiate from traumatic muscle tears.
• Verify laterality (left shoulder) is clearly documented; separate codes exist for the right and bilateral shoulders.
• Do not confuse with muscle strain or sprain codes, which imply less severe injury without complete separation.