ICD-10 Code H18.792 – Other corneal deformities, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.792 – Other corneal deformities, left eye
What it is
This code identifies a structural abnormality of the left cornea that does not fit a more specific corneal diagnosis. Use it when documentation states an unspecified or other corneal deformity limited to the left eye.
Clinical signs
Findings may include visible corneal shape change, irregular contour, or distortion noted on eye examination. Clinical features vary; refer to documentation.
When to use this code
Use H18.792 when the provider documents a corneal deformity in the left eye and no more precise code applies. It may support cases described as corneal irregularity, deformity, or other non-classified corneal change. Check documentation if laterality or etiology is unclear.
Do not use for
Do not use this code for corneal disease with a more specific diagnosis, such as edema, ulcer, scar, or dystrophy. Do not use it when the right eye, bilateral eyes, or unspecified eye is documented instead.
Coding tip
Verify that the record supports both “other corneal deformities” and left-eye laterality before assigning H18.792.