ICD-10 Code I71.10 – Thoracic aortic aneurysm, ruptured, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I71.10 – Thoracic aortic aneurysm, ruptured, unspecified
What it is
This code identifies a ruptured aneurysm of the thoracic aorta when the specific thoracic segment is not documented. It indicates a life-threatening tear or leak in the chest portion of the aorta.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include sudden chest or back pain, hemodynamic instability, or imaging evidence of thoracic aortic rupture.
When to use this code
Use I71.10 when the record clearly states a ruptured thoracic aortic aneurysm but does not identify the ascending, arch, descending, or other specific thoracic portion. It may also apply when imaging or operative notes confirm rupture without further anatomic detail. Code only what the documentation supports.
Do not use for
Do not use this code for nonruptured thoracic aortic aneurysm or for abdominal aortic aneurysm. If the rupture site is specified more precisely, select the more specific code instead.
Coding tip
Check the provider note and imaging report for the exact thoracic segment before defaulting to the unspecified code.