ICD-10-CM > I00-I99 > I70-I79 > I71 > I71.6 I71.6 Thoracoabdominal aortic aneurysm, without rupture Non-Billable/Non-Specific Codes I71.60Thoracoabdominal aortic aneurysm, without rupture, unspecifiedI71.61Supraceliac aneurysm of the thoracoabdominal aorta, without ruptureI71.62Paravisceral aneurysm of the thoracoabdominal aorta, without rupture