Central retinal artery occlusion, left eye

This code signifies a sudden and severe blockage of the main artery supplying blood to the retina in the left eye. This condition typically leads to acute, painless vision loss in the affected eye due to retinal ischemia.

Apply this code when documentation confirms a central retinal artery occlusion specifically affecting the patient's left eye. This diagnosis is often supported by funduscopic examination revealing a "cherry-red spot" and retinal whitening, along with sudden monocular vision loss.

• Ensure laterality is clearly documented as "left eye" to support this specific code.
• Distinguish from branch retinal artery occlusion (H34.2-) or other retinal vascular occlusions.
• Consider co-morbidities such as atherosclerosis, hypertension, or carotid artery disease that may predispose to this condition.