Central pterygium of left eye

This code signifies a central pterygium affecting the left eye. A pterygium is a benign, wing-shaped growth of conjunctival tissue that encroaches onto the cornea, and "central" indicates its location involves the central visual axis. This can impair vision and cause irritation.

Use this code when documentation specifies a pterygium located centrally on the left eye. This typically occurs when the growth extends significantly into the corneal area, potentially obscuring the pupil. Supporting documentation should clearly state "central pterygium" and specify the "left eye."

• Differentiate from peripheral pterygium; this code is specifically for central involvement.
• Ensure laterality is clearly documented (left eye).
• Do not confuse with pinguecula, which is a yellow patch or bump on the conjunctiva that does not grow onto the cornea.