AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2015 Issue 3; Ask the Editor

Moyamoya Disease and Hemispheric Pial Synagiosis with Craniotomy

A patient diagnosed with Moyamoya disease with narrowing and obstruction of the internal carotid artery and leptomeningeal anastomotic vessels underwent right hemispheric pial synangiosis from the superficial temporal artery to the cerebral cortex. At surgery, the scalp was opened, exposing the superficial temporal artery. Two burr holes were placed. The cranium was then positioned higher than its natural anatomic position using plates and screws, to allow sufficient room for the superficial temporal artery cuff. A cuff of the superficial temporal artery was sutured in situ with a cuff of tissue. The artery was then sutured to the cortex of the brain. What is the correct root operation for this surgery?  ...

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