AHA Coding Clinic® for ICD-9 - 2008 Issue 4; VOLUMES 1 AND 2 NEW/REVISED CODES

Carotid Sinus Syndrome

Effective October 1, 2008, code 337.0, Idiopathic peripheral autonomic neuropathy, has been expanded to separately identify carotid sinus syndrome (337.01). Carotid sinus syndrome is a vagal activation which is similar to physiologic manifestations in patients seen with neurocardiogenic syncope. It is also called carotid sinus hypersensitivity. It is caused by pressure on the carotid sinus baroreceptors. It usually occurs with turning of the head to one side. Activation of the carotid sinus baroreceptors gives rise to impulses carried via a branch of the glossopharyngeal nerve, to the medulla oblongata. The impulses activate the sympathetic nerve fibers to...

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