Central pterygium of eye, bilateral

This code describes a bilateral growth of conjunctival tissue that extends onto the cornea, specifically originating from the central portion of the eye. This benign, wedge-shaped lesion typically involves both eyes and can impair vision if it encroaches significantly on the pupillary area.

Use this code when documentation clearly indicates a diagnosis of central pterygium affecting both the right and left eyes. This code is appropriate for initial encounters, follow-up visits, and surgical planning for bilateral central pterygium. Supporting documentation should specify "central" and "bilateral" involvement.

• Ensure documentation explicitly states "central" pterygium; differentiate from other pterygium locations.
• Verify laterality; this code is specifically for bilateral involvement. Do not use for unilateral cases.
• Consider additional codes for associated symptoms or complications, such as vision impairment (H53.- codes) if documented.