Embolism and thrombosis of thoracic aorta

This code signifies the presence of a blockage within the thoracic aorta, the section of the aorta located in the chest. This blockage, an embolism or thrombosis, obstructs blood flow to various parts of the body supplied by the thoracic aorta's branches. It represents an acute or subacute vascular event within this major artery.

Use this code when documentation explicitly states an embolism or thrombosis affecting the thoracic aorta. This includes scenarios such as acute aortic occlusion due to a dislodged clot or in situ clot formation within the thoracic segment. Supporting documentation would include imaging reports (e.g., CT angiography, MRI) confirming the location and nature of the occlusion, and physician notes detailing the diagnosis.

• Differentiate from aortic dissection (441.0x) or aneurysm (441.2x-441.4x) which are distinct conditions.
• Specify any associated complications or underlying causes with additional codes, such as peripheral emboli or cardiac sources.
• Ensure the documentation clearly identifies the thoracic portion of the aorta as the site of the embolism or thrombosis.