ICD-10 Code H20.812 – Fuchs’ heterochromic cyclitis, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H20.812 – Fuchs’ heterochromic cyclitis, left eye
What it is
H20.812 identifies Fuchs’ heterochromic cyclitis affecting the left eye. Use it for this chronic uveitis subtype when documentation specifies the left eye.
Clinical signs
Typical findings include low-grade anterior uveitis, iris color change, and possible cataract or vitreous haze. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents Fuchs’ heterochromic cyclitis in the left eye. It is also appropriate when the note clearly links chronic unilateral uveitis to the left eye diagnosis.
If laterality is stated only as left eye, code the laterality-specific option. Check documentation when the record uses older terminology or does not clearly identify the affected eye.
Do not use for
Do not use this code for unspecified eye involvement or for other types of uveitis. Do not assign it when the chart does not support Fuchs’ heterochromic cyclitis.
Coding tip
Confirm both the diagnosis name and left-eye laterality in the provider note before assigning H20.812.