Thoracoabdominal aneurysm, without mention of rupture

This code signifies a localized dilation or ballooning of both the thoracic and abdominal aorta, indicating an aneurysm that spans the diaphragm. It specifically refers to an intact aneurysm without evidence of a tear or rupture in the aortic wall. This condition can lead to serious complications if left untreated.

Use this code when documentation clearly identifies an aneurysm involving both the thoracic and abdominal segments of the aorta. This diagnosis is typically supported by imaging studies such as CT scans, MRIs, or aortography, confirming the presence and location of the aneurysm. It applies to cases where the aneurysm is stable and not actively bleeding or dissecting.

• Do not use this code if the aneurysm is specified as ruptured; a different code would be required.
• Ensure documentation specifies involvement of both thoracic and abdominal aorta; otherwise, a more specific code for a thoracic or abdominal aneurysm should be used.
• Consider any associated conditions or complications, such as dissection or atherosclerosis, for additional coding.