Unspecified pterygium of left eye

This code signifies the presence of an unspecified pterygium affecting the left eye. A pterygium is a benign, triangular growth of conjunctival tissue that extends onto the cornea, typically originating from the nasal side. "Unspecified" indicates that the specific type or characteristics of the pterygium (e.g., progressive, recurrent) are not documented.

Use this code when the medical record clearly documents a pterygium in the left eye, but lacks further detail regarding its specific nature. This is appropriate for initial diagnoses where the physician has not yet characterized the pterygium beyond its presence and location. Documentation should explicitly state "pterygium, left eye" without additional modifiers.

• Avoid using this code if the documentation specifies the pterygium as progressive, recurrent, or stationary; instead, select a more specific code.
• Ensure laterality is accurately documented and coded; this code is specific to the left eye.
• Query the provider for more specific details if available to allow for more precise coding.