Fuchs' heterochromic cyclitis, bilateral

This code represents a chronic, low-grade, non-granulomatous anterior uveitis characterized by heterochromia (difference in iris color), stellate keratic precipitates, and often glaucoma or cataract formation. It typically affects one eye but can present bilaterally, as indicated by this specific code. The inflammation is persistent and can lead to long-term ocular complications.

Use this code when documentation clearly indicates a diagnosis of Fuchs' heterochromic cyclitis affecting both eyes. This diagnosis is typically made by an ophthalmologist based on characteristic clinical signs and symptoms. Supporting documentation should detail the bilateral involvement and the specific features of Fuchs' cyclitis.

• Ensure the documentation explicitly states "bilateral" involvement; otherwise, a unilateral code (H20.811 or H20.812) or unspecified code (H20.819) would be more appropriate.
• Code any associated complications, such as glaucoma (H40.-) or cataract (H25.-, H26.-), as secondary diagnoses.
• Distinguish from other forms of uveitis; Fuchs' heterochromic cyclitis has unique clinical features that should be clearly documented to support this specific code.