ICD-10 Code H20.1 – Chronic iridocyclitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H20.1 – Chronic iridocyclitis
What it is
H20.1 identifies chronic inflammation of the iris and ciliary body, often lasting longer than an acute episode. Use it when the record specifically documents chronic iridocyclitis or a chronic anterior uveitis pattern.
Clinical signs
Common findings include eye pain, redness, photophobia, and blurred vision. Clinical features vary; refer to documentation, especially when slit-lamp findings or recurrent inflammation are recorded.
When to use this code
Use this code when the provider documents chronic iridocyclitis, chronic anterior uveitis, or persistent inflammation of the iris and ciliary body. It also fits follow-up visits for an ongoing condition already established in the chart. Code the chronic diagnosis only when the record supports it.
Do not use for
Do not use H20.1 for acute iridocyclitis or nonspecific eye irritation without a confirmed inflammatory diagnosis. Check documentation if the note describes another uveitis type or a different ocular disorder.
Coding tip
Match the code to the provider’s exact wording and avoid assuming chronicity from a single flare.