H21 – Other disorders of iris and ciliary body
ICD-10-CM 2027 diagnosis code · Disorders of sclera, cornea, iris and ciliary body
ICD-10-CM code
H21
- Code
H21(claims format:H21)- Description
- Other disorders of iris and ciliary body
- 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
Billable codes under H21
H21 is a header code and cannot be used on claims. Choose the most specific code:
- H21.0 – HyphemaHeader (more codes below)
- H21.1 – Other vascular disorders of iris and ciliary bodyHeader (more codes below)
- H21.2 – Degeneration of iris and ciliary bodyHeader (more codes below)
- H21.3 – Cyst of iris, ciliary body and anterior chamberHeader (more codes below)
- H21.4 – Pupillary membranesHeader (more codes below)
- H21.5 – Other and unspecified adhesions and disruptions of iris and ciliary bodyHeader (more codes below)
- H21.8 – Other specified disorders of iris and ciliary bodyHeader (more codes below)
- H21.9 – Unspecified disorder of iris and ciliary bodyBillable
Notes for H21
Excludes2 (not included here):
- sympathetic uveitis (H44.1-)
Frequently asked questions
What is ICD-10 code H21?
H21 is the ICD-10-CM code for other disorders of iris and ciliary body, in the block H15-H22 (Disorders of sclera, cornea, iris and ciliary body).
Is H21 a billable code?
No. H21 is a header code with more specific child codes; report one of the billable codes listed above.
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.