Aortic aneurysm or dissection

Definition

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.

7 subordinate codes

• BD50.0Thoracic aortic dissection, ascending aorta dissection and propagation beyond arch
• BD50.1Ascending aorta dissection not beyond arch
• BD50.2Descending aorta dissection and distal propagation
• BD50.3Thoracic aortic aneurysm
• BD50.4Abdominal aortic aneurysm
• BD50.5Thoracoabdominal aortic aneurysm
• 4B4ZDiseases of the immune system, unspecified

Nearby in Diseases of arteries or arterioles

• BD30Acute arterial occlusion
• BD40-BD4ZChronic arterial occlusive disease
• BD51Arterial aneurysm or dissection, excluding aorta
• BD52Certain specified disorders of arteries or arterioles
• BD53Secondary disorders of arteries or arterioles
• BD54Diabetic foot ulcer
• BD55Asymptomatic stenosis of intracranial or extracranial artery
• BD56Asymptomatic occlusion of intracranial or extracranial artery