Chronic giant papillary conjunctivitis, left eye

This code signifies a persistent, inflammatory condition of the conjunctiva characterized by the presence of large papillae, specifically affecting the left eye. It is typically associated with chronic irritation from foreign bodies, most commonly contact lenses.

Apply this code when documentation clearly indicates a diagnosis of chronic giant papillary conjunctivitis (GPC) impacting the left eye. This diagnosis is often made after a slit lamp examination revealing characteristic large papillae on the tarsal conjunctiva.

• Ensure the documentation specifies "chronic" GPC; acute GPC would be coded differently.
• Verify the affected eye is explicitly stated as the "left eye" to avoid laterality errors.
• Distinguish from other forms of conjunctivitis; GPC is characterized by the presence of giant papillae.