ICD-11 classes
11 Diseases of the circulatory system
Diseases of arteries or arterioles
BD50 — Aortic aneurysm or dissection

ICD-11 BD50 — Aortic aneurysm or dissection

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.

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis with code BD50 contains 8 clarifying diagnoses:

1. BD50.0 — Thoracic aortic dissection, ascending aorta dissection and propagation beyond arch
   It contains 5 clarifying diagnoses.
2. BD50.1 — Ascending aorta dissection not beyond arch
   It contains 5 clarifying diagnoses.
3. BD50.2 — Descending aorta dissection and distal propagation
   It contains 5 clarifying diagnoses.
4. BD50.3 — Thoracic aortic aneurysm
   It contains 5 clarifying diagnoses.
5. BD50.4 — Abdominal aortic aneurysm
   It contains 4 clarifying diagnoses.
6. BD50.5 — Thoracoabdominal aortic aneurysm
   It contains 5 clarifying diagnoses.
7. BE13 — Postprocedural true or false aortic aneurysm
8. BD50.Z — Aortic aneurysm or dissection, unspecified