Optic papillitis, left eye

This code signifies inflammation of the optic nerve head (papilla) specifically affecting the left eye. It is characterized by swelling of the optic disc, often leading to visual disturbances. This condition is a form of optic neuritis.

Apply this code when documentation clearly indicates optic papillitis diagnosed in the patient's left eye. This diagnosis is typically supported by ophthalmoscopic findings of a swollen optic disc and associated visual field defects or decreased visual acuity in the left eye.

• Ensure laterality is explicitly documented as "left eye" to support this specific code.
• Differentiate from retrobulbar neuritis (H46.1-) where the optic disc appears normal.
• Code any underlying systemic conditions (e.g., multiple sclerosis, autoimmune disorders) as primary diagnoses when appropriate.