ICD-10 Code H18.723 – Corneal staphyloma, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.723 – Corneal staphyloma, bilateral
What it is
H18.723 identifies a bilateral corneal staphyloma, meaning both corneas have abnormal outward bulging with thinning and protrusion of deeper tissue. It is a serious structural corneal disorder and not a general redness or opacity code.
Clinical signs
Typical findings include visible corneal protrusion, marked thinning, and irregular corneal contour in both eyes. Vision is often reduced, and clinical features vary; refer to documentation.
When to use this code
Use H18.723 when the provider documents corneal staphyloma affecting both eyes, or clearly describes bilateral corneal bulging consistent with this diagnosis. Code it when the record supports a structural corneal deformity rather than a nonspecific corneal scar or opacity. If laterality is unclear, check documentation before assigning a bilateral code.
Do not use for
Do not use this code for unilateral corneal staphyloma or for general corneal disease without documented staphyloma. It is also incorrect for nonspecific corneal opacity, edema, or ulcer unless the provider specifically documents staphyloma.
Coding tip
Verify both laterality and the exact corneal diagnosis in the note before coding H18.723.