Vogt-Koyanagi syndrome, unspecified eye

This code represents Vogt-Koyanagi-Harada (VKH) syndrome, an autoimmune disorder characterized by chronic, bilateral panuveitis with associated dermatological, neurological, and auditory manifestations. It specifically indicates the unspecified eye is affected when laterality is not documented. The condition involves inflammation of the uveal tract, often leading to serous retinal detachments and optic nerve involvement.

Use this code when the physician's documentation clearly states a diagnosis of Vogt-Koyanagi-Harada syndrome, but does not specify whether the right or left eye is affected. This is appropriate when the medical record indicates the presence of the syndrome without explicit laterality. Documentation should support the systemic nature of VKH, even if only the ocular component is being treated.

• Avoid using this code if laterality (right or left eye) is clearly documented; instead, use the more specific codes H20.821 (right eye) or H20.822 (left eye).
• Always review the entire medical record for any mention of laterality before defaulting to the unspecified code.
• Consider co-reporting codes for associated systemic manifestations (e.g., neurological, auditory, dermatological) if documented and treated.