H34.12
Central retinal artery occlusion, left eye
Clinical Classification Guidelines
Medical Intelligence & Overview
Central Retinal Artery Occlusion (CRAO) is a sudden, painless loss of vision in one eye caused by a blockage in the main artery supplying the retina—the light-sensitive tissue at the back of the eye. When this blockage occurs in the left eye, it is specifically referred to as H34.12 in the ICD-10 classification. This condition is considered an eye emergency because prompt recognition and treatment can influence the potential for recovery. CRAO typically affects middle-aged and older adults and is often linked to systemic health issues.
Causes & Symptoms
Clinical Causes: Atherosclerosis (hardening and narrowing of the arteries) Embolism (blockage caused by a blood clot or plaque traveling from elsewhere in the body) Cardiovascular disease, such as atrial fibrillation or heart valve disease Vasculitis (inflammation of blood vessels) Giant cell arteritis (an inflammatory disorder of blood vessels) Hypercoagulable states (conditions that increase blood clot risk) Carotid artery disease Recent ocular or head trauma
Key Symptoms: Sudden, painless loss of vision in the affected eye A shadow or curtain descending over part or all of the visual field Possible visual field defects such as central or peripheral scotomas Decreased visual acuity that develops rapidly May perceive a whirling or flashing sensation shortly before vision loss
Diagnostic & Treatment
Diagnosis Path: Diagnosis involves a comprehensive eye examination by an eye care professional, including visual acuity tests and fundus examination. Key diagnostic tools include:
Treatment Protocols: Since CRAO is an emergency, immediate intervention is crucial. While the effectiveness of treatments varies and some options are still under research, potential approaches include:
Clinical Advice & FAQs
Billing Guidance
Is H34.12 a billable ICD-10 code?
Yes, H34.12 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report H34.12?
Clinical documentation must specify the nature of Central retinal artery occlusion, left eye and any associated comorbidities for accurate reporting.
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