ICD-10 Code H20.81 – Fuchs’ heterochromic cyclitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H20.81 – Fuchs’ heterochromic cyclitis
What it is
Use this code for Fuchs’ heterochromic cyclitis, a chronic form of anterior uveitis. It is typically a long-standing, low-grade inflammatory eye condition that may affect one eye.
Clinical signs
Typical findings include mild anterior chamber inflammation, iris color change or heterochromia, and fine keratic precipitates. Clinical features vary; refer to documentation.
When to use this code
Assign H20.81 when the provider documents Fuchs’ heterochromic cyclitis or Fuchs uveitis syndrome. Use it for confirmed cases with the specific diagnosis, even if the note emphasizes chronic mild inflammation or iris heterochromia. Check documentation if the record only says “uveitis” without this subtype.
Do not use for
Do not use this code for unspecified uveitis, acute iritis, or other anterior uveitis types unless Fuchs’ heterochromic cyclitis is documented. Check documentation when the diagnosis is unclear.
Coding tip
Code the documented subtype exactly; “Fuchs” is not the same as general uveitis.