Kayser-Fleischer ring, right eye

This code signifies the presence of a Kayser-Fleischer ring in the right eye. A Kayser-Fleischer ring is a greenish-brown or reddish-brown discoloration in the periphery of the cornea, caused by copper deposition, and is a hallmark sign of Wilson's disease.

Use this code when documentation explicitly states the presence of a Kayser-Fleischer ring in the patient's right eye. This finding is typically noted during a slit-lamp examination by an ophthalmologist or optometrist. It strongly suggests a diagnosis of Wilson's disease, though other conditions causing copper accumulation should be considered.

• Always specify laterality (right, left, bilateral) when documented.
• This code is often a secondary diagnosis, with Wilson's disease (E83.01) as the primary.
• Ensure the documentation clearly identifies the ring as a Kayser-Fleischer ring, not just general corneal discoloration.