ICD-10-CM > I00-I99 > I70-I79 > I71 > I71.1 I71.1 Thoracic aortic aneurysm, ruptured Non-Billable/Non-Specific Codes I71.10Thoracic aortic aneurysm, ruptured, unspecifiedI71.11Aneurysm of the ascending aorta, rupturedI71.12Aneurysm of the aortic arch, rupturedI71.13Aneurysm of the descending thoracic aorta, ruptured