Abnormal innervation syndrome right upper eyelid

This code signifies a neurological disorder affecting the right upper eyelid, where the nerves supplying the muscle (levator palpebrae superioris) are misdirected or improperly connected. This can lead to abnormal eyelid movements, such as Marcus Gunn jaw-winking phenomenon, where the eyelid retracts or elevates involuntarily with jaw movement.

Use this code when documentation explicitly states "abnormal innervation syndrome" or "misdirection syndrome" affecting the right upper eyelid. This typically occurs in congenital cases or following nerve injury. Supporting documentation should detail the specific eyelid abnormality and its association with aberrant nerve pathways.

• Differentiate from simple ptosis (H02.4x) or blepharospasm (G24.5), which are distinct conditions.
• Ensure laterality is clearly documented (right vs. left) as separate codes exist for each.
• Consider additional codes for any underlying cause or associated conditions, if documented.