U.S. ICD-10-CM · FY 2027

H21 ICD-10-CM Code: Other disorders of iris and ciliary body

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

H21

Other disorders of iris and ciliary body

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where H21 sits

  1. 1

    Chapter 7

    Diseases of the eye and adnexa (H00-H59)

  2. 2

    Section

    Disorders of sclera, cornea, iris and ciliary body (H15-H22)

  3. 3

    Category H21

    Other disorders of iris and ciliary body

  4. 4

    Code H21

    Other disorders of iris and ciliary body

More specific choices

Codes under H21

H21 is a non-billable category. Choose the child code that best matches the documented diagnosis.

H21.0

Hyphema

H21.1

Other vascular disorders of iris and ciliary body

H21.2

Degeneration of iris and ciliary body

H21.3

Cyst of iris, ciliary body and anterior chamber

H21.4

Pupillary membranes

H21.5

Other and unspecified adhesions and disruptions of iris and ciliary body

H21.8

Other specified disorders of iris and ciliary body

H21.9

Unspecified disorder of iris and ciliary body

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for H21.

Code first

No “code first” instruction is listed for H21.

Use additional code

No “use additional code” instruction is listed for H21.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for H21.

Excludes2

Conditions not included here that may be reported separately when present.

  • sympathetic uveitis (H44.1-)

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code H21 mean?

H21 is the FY 2027 U.S. ICD-10-CM code for “Other disorders of iris and ciliary body.”

Is H21 a billable or specific ICD-10-CM code?

No. H21 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is H21 located in ICD-10-CM?

H21 is listed in Chapter 7, Diseases of the eye and adnexa (H00-H59), within Disorders of sclera, cornea, iris and ciliary body (H15-H22) (H15–H22), under category H21, Other disorders of iris and ciliary body.

What coding notes are listed for H21?

No inclusion terms are listed for H21 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. Excludes2 notes: sympathetic uveitis (H44.1-).

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