Phlyctenular keratoconjunctivitis, left eye

This code describes an inflammatory condition of the cornea and conjunctiva characterized by small, grayish-white nodules (phlyctenules) on the limbus, cornea, or conjunctiva. It is a localized hypersensitivity reaction, often associated with staphylococcal blepharitis or tuberculosis, specifically affecting the left eye.

Use this code when documentation clearly indicates phlyctenular keratoconjunctivitis diagnosed in the patient's left eye. This diagnosis is typically made based on slit-lamp examination revealing characteristic phlyctenules and associated inflammation. Supporting documentation should specify the affected eye.

• Ensure laterality is accurately documented and coded; this code is specific to the left eye.
• Distinguish from other forms of conjunctivitis or keratitis; phlyctenular lesions are key to this diagnosis.
• Consider coding any underlying systemic conditions, such as tuberculosis or staphylococcal infections, as additional diagnoses.