ICD-10 Code H18.002 – Unspecified corneal deposit, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.002 – Unspecified corneal deposit, left eye
What it is
This code identifies a deposit or opacity in the cornea of the left eye when the specific type is not documented. Use it when the record confirms a corneal deposit but does not name the underlying cause.
Clinical signs
Clinical features vary; refer to documentation. Findings may include a visible corneal opacity or deposit on eye examination, sometimes with reduced clarity of the cornea.
When to use this code
Use H18.002 when the provider documents an unspecified corneal deposit limited to the left eye. It fits cases where the chart notes a corneal deposit but does not identify a more specific corneal disorder or cause. If the diagnosis is later clarified, code the more specific condition instead.
Do not use for
Do not use this code when the documentation identifies a different corneal disease, such as dystrophy, ulcer, or scar. Also avoid it if the deposit is in another eye or the laterality is not left.
Coding tip
Confirm laterality and whether the provider truly meant an unspecified deposit before assigning H18.002.