Aortic aneurysm or dissection

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Aortic aneurysm is a term for any swelling (dilation or aneurysm) of the aorta to greater than 1.5 times normal, usually representing an underlying weakness in the wall of the aorta at that location. Aortic dissection occurs when a tear in the inner wall of the aorta causes blood to flow between the layers of the wall of the aorta, forcing the layers apart.

code elsewhere

• Postprocedural true or false aortic aneurysm  (BE13)
• Aortic aneurysm due to congenital heart disease  (LA8Y)

sections/codes in this section (BD50-BD50)

• Thoracic aortic dissection, ascending aorta dissection and propagation beyond arch  (BD50.0)
• Ascending aorta dissection not beyond arch  (BD50.1)
• Descending aorta dissection and distal propagation  (BD50.2)
• Thoracic aortic aneurysm  (BD50.3)
• Abdominal aortic aneurysm  (BD50.4)
• Thoracoabdominal aortic aneurysm  (BD50.5)
• Aortic aneurysm or dissection, unspecified  (BD50.Z)

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