Zoster iridocyclitis

This code represents inflammation of the iris and ciliary body (iridocyclitis) caused by reactivation of the varicella-zoster virus (shingles). It is a specific ocular complication of herpes zoster ophthalmicus, characterized by pain, photophobia, and blurred vision.

Apply this code when documentation confirms a diagnosis of iridocyclitis directly attributed to a herpes zoster infection. This typically occurs in patients with a history of chickenpox who experience a shingles outbreak affecting the ophthalmic division of the trigeminal nerve.

• Ensure documentation explicitly links the iridocyclitis to zoster; otherwise, use a non-specific iridocyclitis code.
• Code any associated herpes zoster ophthalmicus (e.g., HZ of eyelid, conjunctiva) separately.
• Do not use this code for iridocyclitis due to other viral etiologies or non-infectious causes.