ICD-10 Code H20.031 – Secondary infectious iridocyclitis, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H20.031 – Secondary infectious iridocyclitis, right eye
What it is
Use this code for inflammation of the iris and ciliary body in the right eye when it is secondary to an infectious cause. It identifies a unilateral, infection-related iridocyclitis.
Clinical signs
Clinical features may include eye pain, redness, photophobia, and blurred vision. You should rely on documentation of infectious iridocyclitis affecting the right eye; clinical features vary, so refer to documentation.
When to use this code
Assign H20.031 when the provider documents secondary infectious iridocyclitis in the right eye. Use it for confirmed cases where the infection-related inflammation is specifically limited to the right eye. If laterality or infectious cause is unclear, check documentation.
Do not use for
Do not use this code for iridocyclitis without an infectious cause or when the left eye or both eyes are documented. Avoid it if the record describes another eye disorder instead; check documentation.
Coding tip
Verify both the infectious etiology and right-eye laterality before coding.