H18
⚠ Non-billable (Header)Other disorders of cornea
Diseases of the eye and adnexa (H00-H59)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ No additional coding notes for H18
Child Codes (10)
H18.0Corneal pigmentations and depositsH18.1Bullous keratopathyH18.2Other and unspecified corneal edemaH18.3Changes of corneal membranesH18.4Corneal degenerationH18.5Hereditary corneal dystrophiesH18.6KeratoconusH18.7Other and unspecified corneal deformitiesH18.8Other specified disorders of corneaH18.9Unspecified disorder of cornea
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CodeH18
BillableNo — Header code
CategoryDiseases of the eye and adnexa (H00-H59)
Excludes10 rule(s)
Excludes20 note(s)
Child codes10
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)