H34.02 ICD-10-CM Code: Transient retinal artery occlusion, left eye
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FY 2026 Apr update / Diseases of the eye and adnexa (H00-H59) / Disorders of choroid and retina (H30-H36)
H34.02
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceTransient retinal artery occlusion, left eye
A temporary blockage of the blood vessel that supplies the retina (the light-sensitive tissue at the back of the eye) in the left eye. The blockage resolves on its own without causing permanent vision loss.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
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Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for H34.02 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for H34.02 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for H34.02 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for H34.02 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for H34.02 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for H34.02 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for H34.02 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is H34.02 an HCC code?
No. H34.02 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
H34.02 is the ICD-10-CM diagnosis code for transient retinal artery occlusion, left eye. A temporary blockage of the blood vessel that supplies the retina (the light-sensitive tissue at the back of the eye) in the left eye. The blockage resolves on its own without causing permanent vision loss. H34.02 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of choroid and retina (h30-h36).
H34.02 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Verify laterality is documented as left eye in the medical record; do not assume based on patient history.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for H34.02 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify laterality is documented as left eye in the medical record; do not assume based on patient history
- •Distinguish between transient (H34.02) and permanent/central retinal artery occlusion (H34.01) as they have different clinical implications and prognoses