Retinal vascular occlusions (H34) ICD-10-CM
The H34 code range covers retinal vascular occlusions with 63 ICD-10-CM diagnosis codes. 45 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- amaurosis fugax G45.3
Codes in the H34 Range 63 codes · 45 billable
- H34 Retinal vascular occlusionsNon-billable
- H34.0 Transient retinal artery occlusionNon-billable
- H34.00 Transient retinal artery occlusion, unspecified eye
- H34.01 Transient retinal artery occlusion, right eye
- H34.02 Transient retinal artery occlusion, left eye
- H34.03 Transient retinal artery occlusion, bilateral
- H34.1 Central retinal artery occlusionNon-billable
- H34.10 Central retinal artery occlusion, unspecified eye
- H34.11 Central retinal artery occlusion, right eye
- H34.12 Central retinal artery occlusion, left eye
- H34.13 Central retinal artery occlusion, bilateral
- H34.2 Other retinal artery occlusionsNon-billable
- H34.21 Partial retinal artery occlusionNon-billable
- H34.211 Partial retinal artery occlusion, right eye
- H34.212 Partial retinal artery occlusion, left eye
- H34.213 Partial retinal artery occlusion, bilateral
- H34.219 Partial retinal artery occlusion, unspecified eye
- H34.23 Retinal artery branch occlusionNon-billable
- H34.231 Retinal artery branch occlusion, right eye
- H34.232 Retinal artery branch occlusion, left eye
- H34.233 Retinal artery branch occlusion, bilateral
- H34.239 Retinal artery branch occlusion, unspecified eye
- H34.8 Other retinal vascular occlusionsNon-billable
- H34.81 Central retinal vein occlusionNon-billable
- H34.811 Central retinal vein occlusion, right eyeNon-billable
- 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 eyeNon-billable
- H34.8120 Central retinal vein occlusion, left eye, with macular edema
- H34.8121 Central retinal vein occlusion, left eye, with retinal neovascularization
- H34.8122 Central retinal vein occlusion, left eye, stable
- H34.813 Central retinal vein occlusion, bilateralNon-billable
- 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
- H34.819 Central retinal vein occlusion, unspecified eyeNon-billable
- H34.8190 Central retinal vein occlusion, unspecified eye, with macular edema
- H34.8191 Central retinal vein occlusion, unspecified eye, with retinal neovascularization
- H34.8192 Central retinal vein occlusion, unspecified eye, stable
- H34.82 Venous engorgementNon-billable
- H34.821 Venous engorgement, right eye
- H34.822 Venous engorgement, left eye
- H34.823 Venous engorgement, bilateral
- H34.829 Venous engorgement, unspecified eye
- H34.83 Tributary (branch) retinal vein occlusionNon-billable
- H34.831 Tributary (branch) retinal vein occlusion, right eyeNon-billable
- H34.8310 Tributary (branch) retinal vein occlusion, right eye, with macular edema
- H34.8311 Tributary (branch) retinal vein occlusion, right eye, with retinal neovascularization
- H34.8312 Tributary (branch) retinal vein occlusion, right eye, stable
- H34.832 Tributary (branch) retinal vein occlusion, left eyeNon-billable
- H34.8320 Tributary (branch) retinal vein occlusion, left eye, with macular edema
- H34.8321 Tributary (branch) retinal vein occlusion, left eye, with retinal neovascularization
- H34.8322 Tributary (branch) retinal vein occlusion, left eye, stable
- H34.833 Tributary (branch) retinal vein occlusion, bilateralNon-billable
- H34.8330 Tributary (branch) retinal vein occlusion, bilateral, with macular edema
- H34.8331 Tributary (branch) retinal vein occlusion, bilateral, with retinal neovascularization
- H34.8332 Tributary (branch) retinal vein occlusion, bilateral, stable
- H34.839 Tributary (branch) retinal vein occlusion, unspecified eyeNon-billable
- H34.8390 Tributary (branch) retinal vein occlusion, unspecified eye, with macular edema
- H34.8391 Tributary (branch) retinal vein occlusion, unspecified eye, with retinal neovascularization
- H34.8392 Tributary (branch) retinal vein occlusion, unspecified eye, stable
- H34.9 Unspecified retinal vascular occlusion
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the H34 range.
Retinal Artery Occlusion
Sudden ISCHEMIA in the RETINA due to blocked blood flow through the CENTRAL RETINAL ARTERY or its branches leading to sudden complete or partial loss of vision, respectively, in the eye.
Retinal Vein Occlusion
Blockage of the RETINAL VEIN. Those at high risk for this condition include patients with HYPERTENSION; DIABETES MELLITUS; ATHEROSCLEROSIS; and other CARDIOVASCULAR DISEASES.
About the H34 Code Range
ICD-10 code H34 covers a range of retinal vascular occlusions, which are conditions where blood flow is blocked in the arteries or veins of the retina. This section includes codes for specific types, such as central or branch artery and vein occlusions, affecting either the right eye, left eye, both eyes, or unspecified eyes.
Retinal vascular occlusions include conditions like transient retinal artery occlusion (H34.0), which may be called transient arterial retinal occlusion, and central retinal artery occlusion (H34.1), also known by terms such as retinal artery occlusion or thrombosis of the retinal artery. Similarly, central retinal vein occlusion (H34.81) is indexed with subcodes identifying eye involvement and complications like macular edema or retinal neovascularization. Codes for partial occlusions, artery branch occlusions, and venous engorgement help specify the exact retinal vessel affected. The category also includes tributary retinal vein occlusions (H34.83), and an unspecified code H34.9 is used when details are unclear, often encompassing terms like retinal ischemia or occlusion due to diabetes-related changes. Using these precise ICD-10 codes assists healthcare professionals in documenting and treating specific retinal blood flow blockages.
Questions About This Page
How many billable codes are in the H34 range?
Of the 63 codes in this range, 45 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the H34 range classify?
The range classifies retinal vascular occlusions. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
