H21.2 – Degeneration of iris and ciliary body
ICD-10-CM 2027 diagnosis code · Disorders of sclera, cornea, iris and ciliary body
- Code
H21.2(claims format:H212)- Description
- Degeneration 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
- Parent codes
- H21
Billable codes under H21.2
H21.2 is a header code and cannot be used on claims. Choose the most specific code:
- H21.21 – Degeneration of chamber angleHeader (more codes below)
- H21.22 – Degeneration of ciliary bodyHeader (more codes below)
- H21.23 – Degeneration of iris (pigmentary)Header (more codes below)
- H21.24 – Degeneration of pupillary marginHeader (more codes below)
- H21.25 – IridoschisisHeader (more codes below)
- H21.26 – Iris atrophy (essential) (progressive)Header (more codes below)
- H21.27 – Miotic pupillary cystHeader (more codes below)
- H21.29 – Other iris atrophyBillable
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
H21 – Other disorders of iris and ciliary body
- sympathetic uveitis (H44.1-)
Related codes in H21
- H21.0 – HyphemaHeader
- H21.1 – Other vascular disorders of iris and ciliary bodyHeader
- H21.3 – Cyst of iris, ciliary body and anterior chamberHeader
- H21.4 – Pupillary membranesHeader
- H21.5 – Other and unspecified adhesions and disruptions of iris and ciliary bodyHeader
- H21.8 – Other specified disorders of iris and ciliary bodyHeader
- H21.9 – Unspecified disorder of iris and ciliary bodyBillable
Frequently asked questions
What is ICD-10 code H21.2?
H21.2 is the ICD-10-CM code for degeneration of iris and ciliary body, in the block H15-H22 (Disorders of sclera, cornea, iris and ciliary body).
Is H21.2 a billable code?
No. H21.2 is a header code with more specific child codes; report one of the billable codes listed above.
What category does H21.2 belong to?
It belongs to category H21 – Other disorders of iris and ciliary body.
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.