ICD-10 Code H17.12 – Central corneal opacity, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H17.12 – Central corneal opacity, left eye
What it is
H17.12 identifies a central scar or haze in the left cornea that affects the visual axis. It is used when the opacity is documented as central and limited to the left eye.
Clinical signs
Findings may include visible corneal clouding on exam, reduced clarity of the corneal center, and decreased vision if the opacity involves the pupil area. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states central corneal opacity of the left eye, including scarring after injury, infection, or other corneal disease. You should code it when the opacity is the documented diagnosis, not merely a historical finding. Check documentation if laterality or location is unclear.
Do not use for
Do not use H17.12 for corneal opacity in the right eye, bilateral corneal opacity, or peripheral corneal scars. Do not assign it when the chart only mentions corneal disease without specifying a central opacity.
Coding tip
Confirm both laterality and the central location in the provider note before assigning H17.12.