Occlusion and stenosis of right carotid artery

This diagnosis code signifies a narrowing or complete blockage of the right carotid artery, a major blood vessel supplying blood to the brain. This condition restricts blood flow, increasing the risk of stroke or transient ischemic attack (TIA). It can be caused by atherosclerosis, dissection, or other vascular pathologies.

Apply this code when documentation explicitly states occlusion or stenosis affecting the right carotid artery. This is appropriate for patients presenting with symptoms of cerebrovascular insufficiency, such as dizziness, syncope, or focal neurological deficits, and confirmed by imaging studies like ultrasound, MRA, or CTA.

• Differentiate between occlusion (complete blockage) and stenosis (narrowing); this code covers both.
• Ensure laterality (right) is clearly documented and accurately reflected.
• Consider sequencing this code with codes for associated conditions like atherosclerosis (I70.x) or cerebral infarction (I63.x) if present.