Localized vascularization of cornea, left eye

This code signifies the presence of abnormal blood vessel growth confined to the cornea of the left eye. This vascularization can impair vision by obstructing light transmission and may be a sign of underlying corneal disease or injury.

Apply this code when documentation specifies localized corneal neovascularization affecting only the left eye. This is often seen in conditions like chronic keratitis, contact lens overwear, or following corneal trauma or surgery. Documentation should clearly indicate the laterality and the localized nature of the vascularization.

• Ensure the documentation specifies "localized" vascularization; diffuse or generalized vascularization would require a different code.
• Confirm laterality; codes exist for the right eye (H16.431) and bilateral involvement (H16.433).
• Always code the underlying cause of the corneal vascularization if known and documented.