ICD10BillableValid for clinical use

ICD-10 Code H34.12: Central retinal artery occlusion, left eye

H34.12 is a billable ICD-10 diagnosis code used to classify Central retinal artery occlusion, left eye in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the eye and adnexa (H00-H59).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the eye and adnexa (H00-H59).

When is it used?

  • May be used when a clinician documents central retinal artery occlusion, left eye in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
7Diseases of the eye and adnexa (H00-H59)
block
H30-H36Disorders of choroid and retina
category
H34Retinal vascular occlusions
category
H34.1Central retinal artery occlusion
currentH34.1

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Ophthalmologist

Coverage-related procedures and services

CPT 93880high
DUPLEX SCAN OF EXTRACRANIAL ARTERIES; COMPLETE BILATERAL STUDY
Source: CMS coverage guidance
CPT 93882high
DUPLEX SCAN OF EXTRACRANIAL ARTERIES; UNILATERAL OR LIMITED STUDY
Source: CMS coverage guidance
CPT 0509Thigh
ELECTRORETINOGRAPHY (ERG) WITH INTERPRETATION AND REPORT, PATTERN (PERG)
Source: CMS coverage guidance
CPT 92273high
ELECTRORETINOGRAPHY (ERG), WITH INTERPRETATION AND REPORT; FULL FIELD (IE, FFERG, FLASH ERG, GANZFELD ERG)
Source: CMS coverage guidance
CPT 92274high
ELECTRORETINOGRAPHY (ERG), WITH INTERPRETATION AND REPORT; MULTIFOCAL (MFERG)
Source: CMS coverage guidance
CPT 92083high
VISUAL FIELD EXAMINATION, UNILATERAL OR BILATERAL, WITH INTERPRETATION AND REPORT; EXTENDED EXAMINATION (EG, GOLDMANN VISUAL FIELDS WITH AT LEAST 3 ISOPTERS PLOTTED AND STATIC DETERMINATION WITHIN THE CENTRAL 30 DEG, OR QUANTITATIVE, AUTOMATED THRESHOLD PERIMETRY, OCTOPUS PROGRAM G-1, 32 OR 42, HUMPHREY VISUAL FIELD ANALYZER FULL THRESHOLD PROGRAMS 30-2, 24-2, OR 30/60-2)
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Central retinal artery occlusion, left eye

Frequently asked questions

Code details

CodeH34.12
SystemICD10
Display nameCentral retinal artery occlusion, left eye
ChapterDiseases of the eye and adnexa (H00-H59)
BlockDisorders of choroid and retina

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code H34.12 for Central retinal artery occlusion, left eye | HealthAssure