ICD-10 Code H18.729 – Corneal staphyloma, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.729 – Corneal staphyloma, unspecified eye
What it is
H18.729 identifies corneal staphyloma in an unspecified eye. This means the cornea is abnormally thinned and bulging outward, but the record does not specify right or left eye.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include a visible corneal protrusion, marked corneal opacity, and distortion of the eye’s surface from severe corneal disease or injury.
When to use this code
Use this code when the provider documents corneal staphyloma and does not identify the affected eye. It is appropriate for ophthalmology notes, problem lists, or discharge summaries that clearly state the diagnosis. If the chart specifies right or left eye, use the laterality-specific code instead.
Do not use for
Do not use this code for other corneal scars, ulcers, or ectatic disorders without staphyloma. If documentation is vague or another corneal condition is named, check documentation before assigning H18.729.
Coding tip
Confirm both the diagnosis and laterality in the note; if the eye is identified, select the specific code rather than the unspecified-eye code.