H21

Non-billable

Other disorders of iris and ciliary body

H21 is the ICD-10-CM code for Other disorders of iris and ciliary body. It is a non-billable category code — use a more specific child code such as H21.0 for billing.

Status
Header (non-billable)
Chapter
H00-H59
Subcodes
8
Edition
FY2026

H00-H59 Diseases of the eye and adnexa

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". It falls under H00-H59 Diseases of the eye and adnexa.
Is H21 a billable code?
No — H21 is a non-billable header code. Use a more specific child code (such as H21.0) for billing.
What are the subcodes of H21?
H21 has 8 more specific child codes, including H21.0, H21.1, H21.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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