ICD-10 Code H20.04 – Secondary noninfectious iridocyclitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H20.04 – Secondary noninfectious iridocyclitis
What it is
This code identifies inflammation of the iris and ciliary body that is not caused by infection and is secondary to another condition or cause. Use it when the record shows iridocyclitis linked to a noninfectious underlying process.
Clinical signs
Typical findings include eye pain, redness, photophobia, tearing, and blurred vision. Clinical features vary; refer to documentation for the specific cause and whether the inflammation is active or recurrent.
When to use this code
Use H20.04 when the provider documents secondary noninfectious iridocyclitis, such as inflammation attributed to a known noninfectious condition. Code the documented cause separately when it is reported and supported in the note. If the record does not clearly state secondary and noninfectious, check documentation.
Do not use for
Do not use this code for infectious uveitis or iridocyclitis, or for unspecified anterior uveitis without a documented secondary cause. Check documentation if the note only says “iritis” or “uveitis.”
Coding tip
Verify that the chart links the iridocyclitis to a noninfectious underlying condition before assigning H20.04.