Amyloid pterygium of left eye

This code signifies a specific type of pterygium affecting the left eye, characterized by the deposition of amyloid protein within the conjunctival and corneal tissue. This abnormal protein accumulation leads to a fleshy, triangular growth that typically extends from the conjunctiva onto the cornea. The condition can cause irritation, foreign body sensation, and potentially impair vision if it encroaches on the visual axis.

Use this code when documentation explicitly states a diagnosis of amyloid pterygium affecting the left eye. This diagnosis is typically made through clinical examination, often confirmed by biopsy demonstrating amyloid deposits. It is appropriate for reporting the primary diagnosis in cases of surgical excision or medical management of this specific type of pterygium.

• Ensure laterality is clearly documented as "left eye" to support this specific code.
• Distinguish from other forms of pterygium (e.g., recurrent, double) which have different codes.
• Look for pathology reports confirming amyloid deposition if available, as this differentiates it from common pterygium.