ICD-10 Code H17.13 – Central corneal opacity, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H17.13 – Central corneal opacity, bilateral
What it is
H17.13 identifies a bilateral opacity in the central cornea, the clear front part of both eyes. It means the corneas have become cloudy enough to be coded as a diagnosed condition.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include visible corneal clouding, reduced clarity of the visual axis, and decreased vision when the opacity involves the central cornea.
When to use this code
Use this code when the provider documents central corneal opacity in both eyes. It also fits follow-up visits for a known bilateral corneal scar or haze that remains clinically relevant. Check the record for laterality and whether the opacity is central rather than peripheral.
Do not use for
Do not use this code for unilateral corneal opacity or for peripheral corneal scars. If the documentation only says corneal opacity without bilateral central involvement, check documentation.
Coding tip
Confirm both laterality and corneal location in the note before assigning H17.13.