Double pterygium of left eye

This code describes the presence of two distinct pterygia affecting the left eye. A pterygium is a triangular growth of conjunctival tissue that extends onto the cornea, potentially causing vision impairment or irritation. "Double" indicates the presence of two such growths in the same eye.

Use this code when documentation clearly indicates two separate pterygia are present in the patient's left eye. This typically occurs after an ophthalmological examination where the physician identifies and records the presence of two distinct corneal growths. Supporting documentation would include operative reports for excision of double pterygia or clinical notes detailing the bilateral nature of the condition.

• Ensure the documentation specifies "double" pterygium and the laterality (left eye).
• Do not confuse with recurrent pterygium (H11.04-) or single pterygium (H11.01- for nasal, H11.02- for temporal).
• If the double pterygium affects both eyes, separate codes for each eye (e.g., H11.031 for right, H11.032 for left) should be used.