ICD-10 Code H18.793 – Other Corneal Deformities, Bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.793 – Other corneal deformities, bilateral
What it is
This code identifies a bilateral corneal shape abnormality that does not fit a more specific corneal diagnosis. Use it when both corneas have deformity documented, but the exact type is not named.
Clinical signs
Findings may include irregular corneal contour, distortion on examination, or abnormal corneal topography. Clinical features vary; refer to documentation.
When to use this code
Use H18.793 when the provider documents other corneal deformities affecting both eyes and no more specific code applies. It is appropriate for charted bilateral corneal shape changes, including nonspecific deformity noted on ophthalmic evaluation. Check documentation if the record does not clearly state bilateral involvement.
Do not use for
Do not use this code for a unilateral corneal deformity or for a more specific corneal disorder that is documented. If the chart only says “corneal abnormality” without detail, check documentation.
Coding tip
Confirm that the provider documents both eyes and that “other” is the best match before assigning H18.793.