Keratoconus, unspecified, left eye

This code signifies a non-inflammatory, progressive thinning and bulging of the cornea into a cone-like shape, affecting the left eye, where the specific type or stage of keratoconus is not documented. This corneal ectasia leads to distorted vision due to irregular astigmatism and myopia.

Apply this code when documentation indicates keratoconus in the left eye without further specification of its type (e.g., stable, progressive, acute hydrops) or severity. This is appropriate when the physician's notes simply state "keratoconus, left eye" or "unspecified keratoconus, left eye."

• Ensure laterality is clearly documented; if not specified, use the unspecified eye code.
• Avoid using this code if the documentation provides details about the type or stage of keratoconus (e.g., stable, progressive, with acute hydrops), as more specific codes exist.
• Always review the entire medical record for additional information that might allow for a more precise code selection.