AHA Coding Clinic® for ICD-9 - 1991 Fourth Quarter; New/Revised Codes

Extracranial-Intracranial (EC-IC) Vascular Bypass 39.28

Extracranial-intracranial (EC-IC) arterial bypass consists of a microsurgical end-to-side anastomosis of the superficial temporal or occipital artery to a cortical branch of the middle cerebral artery. It was first performed in 1967 and was generally used for three atherosclerotic conditions: stenosis or occlusion of the inaccessible portion of the internal carotid artery stenosis or Occlusion of the middle cerebral artery longstanding complete occlusion of the internal carotid artery considered to be inoperable by carotid endarterectomy. The EC-IC bypass is also used for treatment of conditions other than atherosclerosis such as skull based tumors involving the internal or middle carotid...

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