Amyloid pterygium of eye, bilateral

This code signifies the presence of an amyloid pterygium affecting both eyes. An amyloid pterygium is a rare, benign, wing-shaped growth of conjunctival tissue that extends onto the cornea, characterized by the deposition of amyloid protein. This condition can cause irritation, foreign body sensation, and potentially impair vision if it encroaches significantly on the visual axis.

Use this code when documentation explicitly states "amyloid pterygium" and specifies bilateral involvement. This diagnosis is typically made following an ophthalmic examination, often confirmed by biopsy demonstrating amyloid deposits. It is appropriate when the patient presents with symptoms related to the bilateral growths or during routine follow-up for this specific condition.

• Ensure the documentation clearly distinguishes amyloid pterygium from common pterygium (H11.00-).
• Verify bilateral involvement is explicitly stated; otherwise, use the appropriate unilateral code (H11.011 or H11.012).
• Code any associated symptoms, such as foreign body sensation (H57.1-) or visual impairment (H54.-), as secondary diagnoses.