ICD-10 Code H20.813 – Fuchs’ heterochromic cyclitis, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H20.813 – Fuchs’ heterochromic cyclitis, bilateral
What it is
H20.813 identifies Fuchs’ heterochromic cyclitis affecting both eyes. It refers to a chronic, usually low-grade uveitis with characteristic iris color change and anterior segment inflammation.
Clinical signs
Typical findings include heterochromia, mild anterior chamber inflammation, and fine keratic precipitates. Clinical features vary; refer to documentation if the bilateral pattern is not clearly stated.
When to use this code
Use this code when the provider documents Fuchs’ heterochromic cyclitis in both eyes. It is appropriate when the diagnosis is confirmed clinically and the record clearly supports bilateral involvement. If laterality is unclear, check documentation before coding.
Do not use for
Do not use this code for unspecified uveitis, other anterior uveitis types, or unilateral Fuchs’ heterochromic cyclitis. If the note does not confirm bilateral disease, choose the documented laterality or check documentation.
Coding tip
Verify that the chart explicitly says bilateral Fuchs’ heterochromic cyclitis before assigning H20.813.