ICD-10 Code H18.829 – Corneal disorder due to contact lens, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.829 – Corneal disorder due to contact lens, unspecified eye
What it is
This code identifies a corneal disorder caused by contact lens use when the affected eye is not specified. Use it for lens-related corneal irritation, injury, or other corneal change documented by the clinician.
Clinical signs
Findings may include eye pain, redness, tearing, blurred vision, or foreign-body sensation. Clinical features vary; refer to documentation, and confirm that the cornea—not the conjunctiva or eyelid—is the structure involved.
When to use this code
Use H18.829 when the record states a corneal disorder is due to contact lens wear and laterality is not documented. It also fits when the provider links the corneal problem to contacts but gives no more specific diagnosis. If documentation names a more specific corneal condition or eye, code that instead.
Do not use for
Do not use this code for simple contact lens intolerance without corneal involvement. Do not assign it when the chart specifies a different eye or a more definite corneal diagnosis; check documentation.
Coding tip
Verify that the provider explicitly connects the corneal disorder to contact lens use before assigning H18.829.