H44.521 ICD-10-CM Code: Atrophy of globe, right eye
H44.521 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · free HCC coding tools
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FY 2026 Apr update / Diseases of the eye and adnexa (H00-H59) / Disorders of vitreous body and globe (H43-H44)
H44.521
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceAtrophy of globe, right eye
Shrinkage or wasting away of the eyeball tissue in the right eye, often resulting from severe eye disease or injury.
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- Phthisis bulbi
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for H44.521 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for H44.521 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for H44.521 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for H44.521 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for H44.521 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for H44.521 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 H44.521 an HCC code?
No. H44.521 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
- H44.521
- Description
- Atrophy of globe, right eye
- 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
H44.521 is the ICD-10-CM diagnosis code for atrophy of globe, right eye. Shrinkage or wasting away of the eyeball tissue in the right eye, often resulting from severe eye disease or injury. H44.521 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of vitreous body and globe (h43-h44).
H44.521 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.
Document the underlying cause of globe atrophy when possible, such as previous trauma, inflammation, or glaucoma.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for H44.521 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Document the underlying cause of globe atrophy when possible, such as previous trauma, inflammation, or glaucoma
- •This condition may be associated with vision loss; consider coding any resulting visual impairment separately