H18.9 – Unspecified disorder of cornea
ICD-10-CM 2027 diagnosis code · Disorders of sclera, cornea, iris and ciliary body
ICD-10-CM code
H18.9
- Code
H18.9(claims format:H189)- Description
- Unspecified disorder of cornea
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 7. Diseases of the eye and adnexa (H00-H59)
- Block
- H15-H22 Disorders of sclera, cornea, iris and ciliary body
- Parent codes
- H18
Index terms for H18.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in H18
- H18.0 – Corneal pigmentations and depositsHeader
- H18.1 – Bullous keratopathyHeader
- H18.2 – Other and unspecified corneal edemaHeader
- H18.3 – Changes of corneal membranesHeader
- H18.4 – Corneal degenerationHeader
- H18.5 – Hereditary corneal dystrophiesHeader
- H18.6 – KeratoconusHeader
- H18.7 – Other and unspecified corneal deformitiesHeader
- H18.8 – Other specified disorders of corneaHeader
Frequently asked questions
What is ICD-10 code H18.9?
H18.9 is the ICD-10-CM code for unspecified disorder of cornea, in the block H15-H22 (Disorders of sclera, cornea, iris and ciliary body).
Is H18.9 a billable code?
Yes. H18.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does H18.9 belong to?
It belongs to category H18 – Other disorders of cornea.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.