H18.21 – Corneal edema secondary to contact lens
ICD-10-CM 2027 diagnosis code · Disorders of sclera, cornea, iris and ciliary body
ICD-10-CM code
H18.21
- Code
H18.21(claims format:H1821)- Description
- Corneal edema secondary to contact lens
- Billable
- No – use a more specific code below
- 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 › H18.2
Billable codes under H18.21
H18.21 is a header code and cannot be used on claims. Choose the most specific code:
Notes for H18.21
Excludes2 (not included here):
- other corneal disorders due to contact lens (H18.82-)
Index terms for H18.21
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in H18.2
Frequently asked questions
What is ICD-10 code H18.21?
H18.21 is the ICD-10-CM code for corneal edema secondary to contact lens, in the block H15-H22 (Disorders of sclera, cornea, iris and ciliary body).
Is H18.21 a billable code?
No. H18.21 is a header code with more specific child codes; report one of the billable codes listed above.
What category does H18.21 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.