H18
⚠ Non-billable
Other disorders of cornea
ICD-10-CM · FY2026 · Diseases of the Eye and Adnexa
Code
H18
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Eye and Adnexa
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code H18?
ICD-10-CM code H18 represents Other disorders of cornea. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Eye and Adnexa chapter, effective October 1, 2025 – September 30, 2026.
Is H18 billable?
No. H18 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is H18 in?
H18 belongs to the Diseases of the Eye and Adnexa chapter (H00–H59) of ICD-10-CM.
Related codes in the H18 category
H18.0
Corneal pigmentations and deposits
Non-billable
H18.1
Bullous keratopathy
Non-billable
H18.2
Other and unspecified corneal edema
Non-billable
H18.00
Unspecified corneal deposit
Non-billable
H18.01
Anterior corneal pigmentations
Non-billable
H18.02
Argentous corneal deposits
Non-billable
H18.03
Corneal deposits in metabolic disorders
Non-billable
H18.04
Kayser-Fleischer ring
Non-billable
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