H35.421
✓ Billable
Microcystoid degeneration of retina, right eye
ICD-10-CM · FY2026 · Diseases of the Eye and Adnexa
Code
H35.421
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Eye and Adnexa
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code H35.421?
ICD-10-CM code H35.421 represents Microcystoid degeneration of retina, right eye. It is a billable diagnosis code in the Diseases of the Eye and Adnexa chapter, effective October 1, 2025 – September 30, 2026.
Is H35.421 billable?
Yes. H35.421 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is H35.421 in?
H35.421 belongs to the Diseases of the Eye and Adnexa chapter (H00–H59) of ICD-10-CM.
Related codes in the H35 category
H35
Other retinal disorders
Non-billable
H35.0
Background retinopathy and retinal vascular changes
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H35.1
Retinopathy of prematurity
Non-billable
H35.2
Other non-diabetic proliferative retinopathy
Non-billable
H35.3
Degeneration of macula and posterior pole
Non-billable
H35.4
Peripheral retinal degeneration
Non-billable
H35.5
Hereditary retinal dystrophy
Non-billable
H35.6
Retinal hemorrhage
Non-billable
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