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.
Official description
H21Other disorders of iris and ciliary body
ICD-10-CM diagnosis code · United States clinical modification
Where H21 sits
- 1
Chapter 7
Diseases of the eye and adnexa (H00-H59)
- 2
Section
Disorders of sclera, cornea, iris and ciliary body (H15-H22)
- 3
Category H21
Other disorders of iris and ciliary body
- 4
Code H21
Other disorders of iris and ciliary body
Codes under H21
H21 is a non-billable category. Choose the child code that best matches the documented diagnosis.
H21.0HyphemaH21.1Other vascular disorders of iris and ciliary bodyH21.2Degeneration of iris and ciliary bodyH21.3Cyst of iris, ciliary body and anterior chamberH21.4Pupillary membranesH21.5Other and unspecified adhesions and disruptions of iris and ciliary bodyH21.8Other specified disorders of iris and ciliary bodyH21.9Unspecified disorder of iris and ciliary bodyNotes 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-)
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.
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-).