ICD-10 Code H20.819 – Fuchs’ heterochromic cyclitis, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H20.819 – Fuchs’ heterochromic cyclitis, unspecified eye
What it is
H20.819 identifies Fuchs’ heterochromic cyclitis affecting an unspecified eye. Use it for this chronic, usually low-grade uveitis when the provider documents the diagnosis but does not specify left or right eye.
Clinical signs
Typical documentation may note chronic anterior uveitis, heterochromia, and fine keratic precipitates. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states Fuchs’ heterochromic cyclitis and the affected eye is not identified. It also fits encounters where the diagnosis is established, but laterality is missing or cannot be confirmed from the note. Check documentation if the provider uses a different uveitis term.
Do not use for
Do not use this code for nonspecific iritis, other anterior uveitis types, or when the documentation names a different eye disorder. If the eye is specified, choose the laterality-specific code instead.
Coding tip
Verify the exact wording and laterality in the assessment before assigning H20.819.