Kayser-Fleischer ring, unspecified eye

This code identifies the presence of a Kayser-Fleischer ring, a characteristic copper deposition in Descemet's membrane of the cornea, without specifying laterality. It is a hallmark clinical sign of Wilson's disease, a genetic disorder of copper metabolism. The ring typically appears as a greenish-brown or golden-brown discoloration at the limbus.

Use this code when documentation confirms the presence of a Kayser-Fleischer ring, but the medical record does not specify whether it is in the right or left eye. This often occurs during initial diagnostic workups for suspected Wilson's disease or during ophthalmologic examinations where laterality was not explicitly noted.

• Always seek clarification from the provider if laterality (right or left eye) is not documented, as more specific codes exist.
• This code should be sequenced as a secondary diagnosis when Wilson's disease (E83.01) is the primary diagnosis.
• Do not use this code if the corneal ring is identified as something other than a Kayser-Fleischer ring (e.g., Arcus senilis).