H34.8121 Central retinal vein occlusion, left eye, with retinal neovascularization

Billable ICD-10-CM code, FY2026.

Built from H34.812 with 7th character 1 (with retinal neovascularization).

Applies from H34 Retinal vascular occlusions

Excludes1 (never code together)

• amaurosis fugax (G45.3)

Applies from H34.81 Central retinal vein occlusion

7th character note

• One of the following 7th characters is to be assigned to codes in subcategory H34.81 to designate the severity of the occlusion:

7th character required

• 0 — with macular edema
• 1 — with retinal neovascularization
• 2 — stable

Risk adjustment (HCC)

• CMS-HCC V28: HCC 298 — Severe Diabetic Eye Disease, Retinal Vein Occlusion, and Vitreous Hemorrhage

Code annotations containing back-references to H34.8121

Back-references to H34.81

• Code First: H40.84 Neovascular secondary angle closure glaucoma ("central retinal vein occlusion (H34.81)")

Back-references to H34

• Type 2 Excludes: I74 Arterial embolism and thrombosis ("ophthalmic embolism and thrombosis (H34.-)")
• Type 2 Excludes: I74 Arterial embolism and thrombosis ("retinal embolism and thrombosis (H34.-)")

Nearby codes

• H34.8110 Central retinal vein occlusion, right eye, with macular edema
• H34.8111 Central retinal vein occlusion, right eye, with retinal neovascularization
• H34.8112 Central retinal vein occlusion, right eye, stable
• H34.812 Central retinal vein occlusion, left eye
• H34.8120 Central retinal vein occlusion, left eye, with macular edema
• H34.8121 Central retinal vein occlusion, left eye, with retinal neovascularization (this code)
• H34.8122 Central retinal vein occlusion, left eye, stable
• H34.813 Central retinal vein occlusion, bilateral
• H34.8130 Central retinal vein occlusion, bilateral, with macular edema
• H34.8131 Central retinal vein occlusion, bilateral, with retinal neovascularization
• H34.8132 Central retinal vein occlusion, bilateral, stable