ICD-10 Code H16.8 – Other keratitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.8 – Other keratitis
What it is
H16.8 identifies keratitis that does not fit a more specific ICD-10 category. Use it for corneal inflammation when the record describes an “other” type and gives enough detail to support that choice.
Clinical signs
Clinical features vary; refer to documentation. Common findings in keratitis may include eye pain, redness, tearing, light sensitivity, blurred vision, or a corneal infiltrate on exam.
When to use this code
Use H16.8 when the provider documents keratitis, but the cause or subtype is not coded more specifically. It is also appropriate when the chart states an unusual or mixed keratitis type that does not map to a dedicated code. Check documentation if the note lacks enough detail.
Do not use for
Do not use this code for a more specific keratitis diagnosis when one is documented. Do not assign it for non-corneal eye inflammation or when the record is too vague to confirm keratitis.
Coding tip
Review the ophthalmology note for the exact keratitis type and code the most specific option available before defaulting to H16.8.