ICD-10 Code H16.339 – Sclerosing keratitis, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.339 – Sclerosing keratitis, unspecified eye
What it is
H16.339 identifies sclerosing keratitis affecting an unspecified eye. Use it when the record shows corneal sclerosis or scarring consistent with this diagnosis, but the laterality is not documented.
Clinical signs
Typical findings include corneal haze, opacity, or scarring with reduced corneal clarity. Clinical features vary; refer to documentation for the exact appearance and eye involved.
When to use this code
Use H16.339 when the provider documents sclerosing keratitis and does not specify right or left eye. It also fits notes describing corneal sclerosis without enough detail for a more specific code. If the chart later identifies laterality, code that documented specificity instead.
Do not use for
Do not use this code for other keratitis types, such as infectious or ulcerative forms, unless sclerosing keratitis is specifically documented. Do not assign it when the record clearly states a different eye or a more specific diagnosis.
Coding tip
Check the ophthalmology note for laterality before defaulting to the unspecified-eye code.