H18 ICD-10-CM Code: Other disorders of cornea
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
H18Other disorders of cornea
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where H18 sits
- 1
Chapter 7
Diseases of the eye and adnexa (H00-H59)
- 2
Section
Disorders of sclera, cornea, iris and ciliary body (H15-H22)
- 3
Category H18
Other disorders of cornea
- 4
Code H18
Other disorders of cornea
More specific choices
Codes under H18
H18 is a non-billable category. Choose the child code that best matches the documented diagnosis.
H18.0Corneal pigmentations and deposits
H18.1Bullous keratopathy
H18.2Other and unspecified corneal edema
H18.3Changes of corneal membranes
H18.4Corneal degeneration
H18.5Hereditary corneal dystrophies
H18.6Keratoconus
H18.7Other and unspecified corneal deformities
H18.8Other specified disorders of cornea
H18.9Unspecified disorder of cornea
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for H18.
Code first
No “code first” instruction is listed for H18.
Use additional code
No “use additional code” instruction is listed for H18.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for H18.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for H18.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code H18 mean?
H18 is the FY 2027 U.S. ICD-10-CM code for “Other disorders of cornea.”
Is H18 a billable or specific ICD-10-CM code?
No. H18 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is H18 located in ICD-10-CM?
H18 is listed in Chapter 7, Diseases of the eye and adnexa (H00-H59), within Disorders of sclera, cornea, iris and ciliary body (H15-H22) (H15–H22), under category H18, Other disorders of cornea.
What coding notes are listed for H18?
No inclusion terms are listed for H18 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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