ICD-10 Code H18.821 – Corneal disorder due to contact lens, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.821 – Corneal disorder due to contact lens, right eye
What it is
This code identifies a corneal disorder in the right eye caused by contact lens wear. Use it when the record links the corneal problem directly to the lens.
Clinical signs
Findings may include corneal irritation, redness, pain, tearing, photophobia, or decreased vision. Clinical features vary; refer to documentation for the specific corneal change described.
When to use this code
Use H18.821 when the clinician documents a corneal disorder attributed to contact lens use in the right eye. It fits cases such as contact lens-related keratitis, corneal abrasion, or other lens-induced corneal injury when the right eye is specified. If laterality is not documented, check documentation before coding.
Do not use for
Do not use this code for nonspecific contact lens complaints without a documented corneal disorder. Do not assign it when the left eye, both eyes, or unspecified eye is documented instead.
Coding tip
Confirm both causation and laterality in the note before assigning H18.821.