ICD-10 Code H20.021 – Recurrent acute iridocyclitis, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H20.021 – Recurrent acute iridocyclitis, right eye
What it is
Use this code for repeated episodes of acute iridocyclitis affecting the right eye. It identifies inflammation of the iris and ciliary body on the right side.
Clinical signs
Typical findings include eye pain, redness, photophobia, and blurred vision. Clinical features vary; refer to documentation for confirmation of recurrence and right-eye involvement.
When to use this code
Assign H20.021 when the provider documents recurrent acute iridocyclitis in the right eye. Use it for follow-up or active episodes when the condition is clearly described as recurrent and unilateral.
If the note only says uveitis, iritis, or anterior uveitis without recurrence or laterality, check documentation before coding. You need clear support for both the recurrent nature and the right eye.
Do not use for
Do not use this code for left eye, bilateral, or unspecified iridocyclitis. Do not use it when the record describes a different uveitis type or lacks documentation of recurrence.
Coding tip
Verify laterality and the word “recurrent” in the provider note before assigning H20.021.