Diseases of arteries, arterioles and capillaries (I70-I79)
I71: Aortic aneurysm and dissection

excludes1
aortic ectasia (I77.81-)
syphilitic aortic aneurysm (A52.01)
traumatic aortic aneurysm (S25.09, S35.09)
I71.0: Dissection of aorta
I71.1: Thoracic aortic aneurysm, ruptured
I71.2: Thoracic aortic aneurysm, without rupture
I71.3: Abdominal aortic aneurysm, ruptured
I71.4: Abdominal aortic aneurysm, without rupture
I71.5: Thoracoabdominal aortic aneurysm, ruptured
I71.6: Thoracoabdominal aortic aneurysm, without rupture
I71.8: Aortic aneurysm of unspecified site, ruptured
I71.9: Aortic aneurysm of unspecified site, without rupture

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