ICD-10 Code I74.11 – Embolism and thrombosis of thoracic aorta (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I74.11 – Embolism and thrombosis of thoracic aorta
What it is
I74.11 identifies a blockage in the thoracic aorta caused by an embolus or a thrombus. Use it when documentation specifies clot-related obstruction in the chest portion of the aorta.
Clinical signs
Clinical features vary; refer to documentation. Findings may include acute ischemic symptoms related to reduced blood flow, but the record should clearly identify thoracic aortic embolism or thrombosis.
When to use this code
Use I74.11 when the provider documents embolism or thrombosis affecting the thoracic aorta. It is appropriate for confirmed aortic clot obstruction, whether described as embolic or thrombotic. If the note only mentions aortic disease without clot, check documentation.
Do not use for
Do not use this code for aneurysm, dissection, or aortic plaque without embolism or thrombosis. If the clot is in a different vessel segment, select the code that matches the documented site.
Coding tip
Match the code to the exact vessel location and clot type stated in the provider note.