Corneal transplant rejection, bilateral

This code signifies the immune system's rejection of a transplanted cornea in both eyes. This is a serious post-operative complication where the body recognizes the donor tissue as foreign and mounts an attack, potentially leading to graft failure and vision loss.

Apply this code when documentation clearly indicates that a patient is experiencing rejection of a corneal graft in both the left and right eyes. This would typically be diagnosed by an ophthalmologist based on clinical signs and symptoms following a bilateral corneal transplant procedure.

• Ensure documentation specifies "bilateral" involvement; otherwise, use a code for unilateral rejection.
• Always code the underlying reason for the original corneal transplant if still relevant and being treated.
• Look for associated complications or treatments for the rejection, such as increased intraocular pressure or steroid therapy, and code them separately.