H21
⚠ Non-billable
Other disorders of iris and ciliary body
ICD-10-CM · FY2026 · Diseases of the Eye and Adnexa
Code
H21
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Eye and Adnexa
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Excludes2 — not included here, but may code together
- sympathetic uveitis (H44.1-)
Frequently asked questions
What is ICD-10 code H21?
ICD-10-CM code H21 represents Other disorders of iris and ciliary body. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Eye and Adnexa chapter, effective October 1, 2025 – September 30, 2026.
Is H21 billable?
No. H21 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is H21 in?
H21 belongs to the Diseases of the Eye and Adnexa chapter (H00–H59) of ICD-10-CM.
Related codes in the H21 category
H21.0
Hyphema
Non-billable
H21.1
Other vascular disorders of iris and ciliary body
Non-billable
H21.2
Degeneration of iris and ciliary body
Non-billable
H21.3
Cyst of iris, ciliary body and anterior chamber
Non-billable
H21.00
Hyphema, unspecified eye
Billable
H21.01
Hyphema, right eye
Billable
H21.02
Hyphema, left eye
Billable
H21.03
Hyphema, bilateral
Billable
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