ICD-10 Code H18.0 – Corneal pigmentations and deposits (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.0 – Corneal pigmentations and deposits
What it is
H18.0 identifies pigment or deposit changes involving the cornea. Use it when the record documents corneal staining, pigmentation, or deposited material affecting the corneal tissue.
Clinical signs
Findings may include visible corneal discoloration, opacity, or deposits on slit-lamp examination. Clinical features vary; refer to documentation.
When to use this code
Use H18.0 when the clinician specifically documents corneal pigmentations or deposits as the diagnosis. It is appropriate for charted corneal material changes without a more specific coded condition. Check documentation if the note also names an underlying disorder.
Do not use for
Do not use this code for conjunctival, lens, or retinal deposits. If the record describes a different corneal disorder with a more specific code, code that condition instead.
Coding tip
Code the documented corneal finding itself, and look for any underlying cause or more specific corneal diagnosis before assigning H18.0.