ICD-10 Code H18.7 – Other and unspecified corneal deformities (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.7 – Other and unspecified corneal deformities
What it is
This code identifies corneal shape abnormalities that do not fit a more specific diagnosis. Use it when the record describes a deformity of the cornea, but the exact type is not documented.
Clinical signs
Clinical features vary; refer to documentation. Findings may include an irregular corneal contour noted on eye examination, with associated visual distortion or reduced vision if described.
When to use this code
Use H18.7 when the clinician documents an unspecified corneal deformity or a corneal shape abnormality without a more precise term. It also applies when the note confirms deformity but does not identify the underlying pattern. If the record names a specific corneal disorder, code that diagnosis instead.
Do not use for
Do not use this code for clearly documented corneal diseases with separate, specific ICD-10 options. Do not assign it when the chart only mentions symptoms, such as blurred vision, without a documented corneal deformity.
Coding tip
Check the ophthalmology note for the exact corneal diagnosis before defaulting to H18.7.