Kayser-Fleischer ring, bilateral

This code signifies the presence of Kayser-Fleischer rings in both eyes. These rings are a characteristic ophthalmic manifestation of Wilson's disease, resulting from copper deposition in Descemet's membrane of the cornea. Their presence indicates systemic copper overload.

Apply this code when documentation confirms bilateral Kayser-Fleischer rings, typically identified during a slit-lamp examination. This finding strongly suggests a diagnosis of Wilson's disease, and the code should be used in conjunction with the primary diagnosis of Wilson's disease (E83.01).

• Always code the underlying systemic condition, Wilson's disease (E83.01), as the primary diagnosis when Kayser-Fleischer rings are present.
• Ensure documentation specifies "bilateral" to support this specific code; otherwise, use the appropriate unilateral or unspecified codes.
• Do not confuse with other corneal opacities; Kayser-Fleischer rings have a distinct appearance and etiology.