ICD-10 Code H18.722 – Corneal staphyloma, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.722 – Corneal staphyloma, left eye
What it is
Corneal staphyloma of the left eye is an abnormal bulging of the cornea, usually from severe weakening and thinning. Use this code when documentation specifies the left eye.
Clinical signs
Typical findings include marked corneal protrusion, thinning, and irregular corneal shape, often with significant visual impairment. Clinical features vary; refer to documentation.
When to use this code
Use H18.722 when the provider documents corneal staphyloma in the left eye, including cases described as a staphylomatous cornea or corneal ectasia with this specific diagnosis. Code the left eye only when laterality is clearly stated.
Do not use for
Do not use this code for unspecified eye involvement, other corneal disorders, or general corneal thinning without staphyloma. Check documentation if the record does not clearly identify the left eye.
Coding tip
Always verify laterality and the exact corneal diagnosis before assigning H18.722.