I71.0: Dissection of aorta


In outpatient care, the ICD code on medical documents is always appended with a diagnostic confidence indicator (A, G, V or Z): A (excluded diagnosis), G (confirmed diagnosis), V (tentative diagnosis) and Z (condition after a confirmed diagnosis).


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Aortic dissection

An aortic dissection occurs when blood penetrates the wall of the body’s main artery (aorta) through a tear, causing the lining of the aorta to split. Emergency surgery is often required.