Paralytic lagophthalmos right upper eyelid

This code signifies the inability of the right upper eyelid to close completely due to paralysis of the orbicularis oculi muscle. This condition leaves the ocular surface exposed, increasing the risk of dryness, irritation, and corneal damage.

Apply this code when documentation explicitly states paralytic lagophthalmos affecting the right upper eyelid. This typically occurs secondary to facial nerve palsy (e.g., Bell's palsy, trauma, tumor) or other neurological conditions impacting eyelid closure.

• Ensure the laterality (right) and specific eyelid (upper) are clearly documented.
• Distinguish from mechanical lagophthalmos (e.g., due to scarring or proptosis), which would be coded differently.
• Code any underlying cause of the paralysis (e.g., G51.0 for Bell's palsy) as a primary diagnosis if applicable, with this code as a secondary diagnosis.