ICD-10-CM 2027 diagnosis code
H34.812Central retinal vein occlusion, left eye
H34.812 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.
Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About H34.812
H34.812 is the ICD-10-CM diagnosis code for central retinal vein occlusion, left eye. It belongs to category H34 (retinal vascular occlusions), block H30-H36 (disorders of choroid and retina) and chapter 7 (diseases of the eye and adnexa). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.
Within H34.81 (central retinal vein occlusion), H34.812 is specifically for central retinal vein occlusion, left eye. Related codes cover right eye (H34.811), bilateral (H34.813) and unspecified eye (H34.819).
Codes in this range require a 7th character: 0 for with macular edema, 1 for with retinal neovascularization and 2 for stable. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2017 (expanded into subcodes).
7th character
One of the following 7th characters is to be assigned to codes in subcategory H34.81 to designate the severity of the occlusion:
Notes that apply from higher levels
Instructions written at a parent level also apply to H34.812.
› From H34 Retinal vascular occlusions
- amaurosis fugax (G45.3)
Broader instructions also apply from Chapter 7: Diseases of the eye and adnexa.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- FY2017 (effective 10/1/2016): Expanded — no longer billable
Common questions about H34.812
Is H34.812 billable?
- No. H34.812 is a header code. Report one of its more specific subcodes instead.