ICD-10 Code H16.311 – Corneal abscess, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.311 – Corneal abscess, right eye
What it is
H16.311 identifies a corneal abscess in the right eye. It means a localized, serious infection of the cornea, the clear front surface of the eye.
Clinical signs
Typical findings include a focal corneal infiltrate or ulcer with surrounding inflammation, pain, redness, tearing, and reduced vision. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents a corneal abscess specifically in the right eye. It is appropriate when the infection is clearly localized to the cornea and laterality is stated. If the record only says “corneal infection” or does not specify the eye, check documentation.
Do not use for
Do not use this code for left-eye or bilateral disease, or for nonspecific keratitis without abscess documentation. Do not assign it if the note does not confirm a corneal abscess.
Coding tip
Always verify laterality and the exact term “abscess” in the provider note before coding H16.311.