ICD-10 Code H16.112 – Macular keratitis, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.112 – Macular keratitis, left eye
What it is
Macular keratitis is inflammation or opacity involving the cornea’s macular area in the left eye. Use this code when documentation specifically identifies the left eye and this named corneal condition.
Clinical signs
Findings may include corneal inflammation, haze, or a localized corneal lesion affecting vision. Clinical features vary; refer to documentation.
When to use this code
Use H16.112 when the provider documents macular keratitis in the left eye, or a left corneal disorder clearly described with this diagnosis. Confirm laterality and the exact term in the record before coding.
Do not use for
Do not use this code for unspecified-eye keratitis or other corneal infections without macular keratitis documented. Check documentation if the note only says “keratitis” or gives a different corneal diagnosis.
Coding tip
Always verify left-eye laterality and the exact ophthalmic term; if the note is unclear, query the provider.