ICD10BillableValid for clinical use
ICD-10 Code H34.9: Unspecified retinal vascular occlusion
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 unspecified retinal vascular occlusion 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
currentH34
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
OphthalmologistCardiologist
Related codes
Sibling codes
Coverage-related procedures and services
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
CPT 92082high
VISUAL FIELD EXAMINATION, UNILATERAL OR BILATERAL, WITH INTERPRETATION AND REPORT; INTERMEDIATE EXAMINATION (EG, AT LEAST 2 ISOPTERS ON GOLDMANN PERIMETER, OR SEMIQUANTITATIVE, AUTOMATED SUPRATHRESHOLD SCREENING PROGRAM, HUMPHREY SUPRATHRESHOLD AUTOMATIC DIAGNOSTIC TEST, OCTOPUS PROGRAM 33)
Source: CMS coverage guidance
CPT 92081high
VISUAL FIELD EXAMINATION, UNILATERAL OR BILATERAL, WITH INTERPRETATION AND REPORT; LIMITED EXAMINATION (EG, TANGENT SCREEN, AUTOPLOT, ARC PERIMETER, OR SINGLE STIMULUS LEVEL AUTOMATED TEST, SUCH AS OCTOPUS 3 OR 7 EQUIVALENT)
Source: CMS coverage guidance
Mapped diagnoses and classifications
SNOMED_CT 15997991000119107high
Bilateral vascular occlusion of retina of eyes
Source: SNOMED International ICD-10 map
SNOMED_CT 404668004high
Calcific retinal embolus
Source: SNOMED International ICD-10 map
SNOMED_CT 418918009high
Macular infarction
Source: SNOMED International ICD-10 map
SNOMED_CT 314436005high
Ocular ischaemic syndrome
Source: SNOMED International ICD-10 map
SNOMED_CT 73757007high
Retinal vascular occlusion
Source: SNOMED International ICD-10 map
SNOMED_CT 15997911000119103high
Vascular occlusion of retina of left eye
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
H34.9
Common synonyms
Unspecified retinal vascular occlusion
Frequently asked questions
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.