Herpesviral keratitis

This code represents an inflammation of the cornea caused by the herpes simplex virus. It typically manifests as a dendritic ulcer or geographic ulcer on the corneal surface, potentially leading to scarring and vision impairment.

Apply this code when documentation explicitly states a diagnosis of herpesviral keratitis, often identified by characteristic corneal lesions. Supporting documentation should include ophthalmological examination findings, such as slit-lamp microscopy.

• Differentiate from other forms of keratitis (e.g., bacterial, fungal) based on etiology.
• Specify laterality (e.g., H54.x for blindness/low vision) if documented and relevant for comorbidity.
• Consider additional codes for complications like corneal scarring (H17.x) or vision loss (H54.x).