ICD-10 Code H16.103 – Unspecified superficial keratitis, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.103 – Unspecified superficial keratitis, bilateral
What it is
This code identifies superficial inflammation or irritation of the cornea in both eyes when the exact cause is not specified. Use it when documentation confirms bilateral superficial keratitis but does not name a more specific type.
Clinical signs
Findings may include bilateral eye redness, tearing, foreign-body sensation, light sensitivity, or discomfort. Clinical features vary; refer to documentation.
When to use this code
Use H16.103 when the provider documents unspecified superficial keratitis affecting both eyes and no additional detail is available. It is appropriate when the record supports corneal surface inflammation but does not identify an infectious, exposure-related, or other specific cause. Check documentation if laterality is unclear.
Do not use for
Do not use this code for a more specific keratitis diagnosis, such as infectious or ulcerative disease, when documented. Avoid it if the chart does not clearly state bilateral involvement.
Coding tip
If the note says only “keratitis” or “corneal irritation,” verify that superficial and bilateral are documented before assigning H16.103.