Acute follicular conjunctivitis, left eye

This code signifies an acute inflammation of the conjunctiva characterized by the formation of follicles, specifically affecting the left eye. Follicles are small, elevated lymphoid aggregates visible on the conjunctival surface, indicating a cellular immune response. This condition is typically viral in origin.

Apply this code when documentation clearly indicates a diagnosis of acute follicular conjunctivitis localized to the left eye. Supporting clinical notes should describe the presence of follicles on the conjunctiva and the acute onset of symptoms such as redness, irritation, and discharge.

• Differentiate from acute serous conjunctivitis (H10.02-) and acute mucopurulent conjunctivitis (H10.03-) based on the specific exudate and presence of follicles.
• Ensure laterality is accurately documented; codes exist for the right eye (H10.011) and bilateral involvement (H10.013).
• Do not use this code for chronic follicular conjunctivitis (H10.41-).