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L Vertebrobasilar stenosis the same as basilar? I am having a hard time finding a code for this dx. pt also had L vertebral artery stenosis I65.02 and chronic stable cerebella infarct.
Vertebral artery stenosis (also called vertebrobasilar insufficiency) happens when the vertebral and basilar arteries at the base of the brain become blocked. These arteries supply blood to the brainstem and the cerebellum.