H21.233 ICD-10-CM Code: Degeneration of iris (pigmentary), bilateral
H21.233 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools
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FY 2026 Apr update / Diseases of the eye and adnexa (H00-H59) / Disorders of sclera, cornea, iris and ciliary body (H15-H22)
H21.233
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceDegeneration of iris (pigmentary), bilateral
A condition where the colored part of the eye (iris) deteriorates and loses pigment in both eyes, affecting the appearance and potentially the function of the iris.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Translucency of iris
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for H21.233 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for H21.233 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for H21.233 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for H21.233 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for H21.233 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for H21.233 in this effective period.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is H21.233 an HCC code?
No. H21.233 is a billable ICD-10-CM code with no mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models.
- Code
- H21.233
- Description
- Degeneration of iris (pigmentary), bilateral
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
H21.233 is the ICD-10-CM diagnosis code for degeneration of iris (pigmentary), bilateral. A condition where the colored part of the eye (iris) deteriorates and loses pigment in both eyes, affecting the appearance and potentially the function of the iris. H21.233 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of sclera, cornea, iris and ciliary body (h15-h22).
H21.233 is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.
This code is specific to bilateral (both eyes) involvement; do not use if only one eye is affected.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for H21.233 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code is specific to bilateral (both eyes) involvement; do not use if only one eye is affected
- •Verify documentation confirms pigmentary degeneration rather than other iris degenerative conditions