Secondary infectious iridocyclitis, left eye

This code signifies inflammation of the iris and ciliary body (iridocyclitis) that is a consequence of an infection originating elsewhere in the body, specifically affecting the left eye. It indicates that the infection is not primary to the eye but has spread from another site.

Apply this code when documentation clearly states infectious iridocyclitis of the left eye, and specifies that it is secondary to an underlying systemic or localized infection. This diagnosis requires a confirmed infectious etiology and laterality.

• Ensure documentation specifies "secondary" and identifies the underlying infectious cause, which should be coded first.
• Verify laterality; this code is specific to the left eye. Use H20.031 for the right eye and H20.033 for bilateral involvement.
• Do not use this code for non-infectious or primary infectious iridocyclitis; refer to other codes within the H20 category.