| I71 | Aortic aneurysm and dissection | NON-BILLABLE CODE |
| I71.0 | Dissection of aorta | NON-BILLABLE CODE |
| I71.00 | Dissection of unspecified site of aorta | BILLABLE CODE |
| I71.01 | Dissection of thoracic aorta | NON-BILLABLE CODE |
| I71.010 | Dissection of ascending aorta | BILLABLE CODE |
| I71.011 | Dissection of aortic arch | BILLABLE CODE |
| I71.012 | Dissection of descending thoracic aorta | BILLABLE CODE |
| I71.019 | Dissection of thoracic aorta, unspecified | BILLABLE CODE |
| I71.02 | Dissection of abdominal aorta | BILLABLE CODE |
| I71.03 | Dissection of thoracoabdominal aorta | BILLABLE CODE |
| I71.1 | Thoracic aortic aneurysm, ruptured | NON-BILLABLE CODE |
| I71.10 | Thoracic aortic aneurysm, ruptured, unspecified | BILLABLE CODE |
| I71.11 | Aneurysm of the ascending aorta, ruptured | BILLABLE CODE |
| I71.12 | Aneurysm of the aortic arch, ruptured | BILLABLE CODE |
| I71.13 | Aneurysm of the descending thoracic aorta, ruptured | BILLABLE CODE |
| I71.2 | Thoracic aortic aneurysm, without rupture | NON-BILLABLE CODE |
| I71.20 | Thoracic aortic aneurysm, without rupture, unspecified | BILLABLE CODE |
| I71.21 | Aneurysm of the ascending aorta, without rupture | BILLABLE CODE |
| I71.22 | Aneurysm of the aortic arch, without rupture | BILLABLE CODE |
| I71.23 | Aneurysm of the descending thoracic aorta, without rupture | BILLABLE CODE |
| I71.3 | Abdominal aortic aneurysm, ruptured | NON-BILLABLE CODE |
| I71.30 | Abdominal aortic aneurysm, ruptured, unspecified | BILLABLE CODE |
| I71.31 | Pararenal abdominal aortic aneurysm, ruptured | BILLABLE CODE |
| I71.32 | Juxtarenal abdominal aortic aneurysm, ruptured | BILLABLE CODE |
| I71.33 | Infrarenal abdominal aortic aneurysm, ruptured | BILLABLE CODE |
| I71.4 | Abdominal aortic aneurysm, without rupture | NON-BILLABLE CODE |
| I71.40 | Abdominal aortic aneurysm, without rupture, unspecified | BILLABLE CODE |
| I71.41 | Pararenal abdominal aortic aneurysm, without rupture | BILLABLE CODE |
| I71.42 | Juxtarenal abdominal aortic aneurysm, without rupture | BILLABLE CODE |
| I71.43 | Infrarenal abdominal aortic aneurysm, without rupture | BILLABLE CODE |
| I71.5 | Thoracoabdominal aortic aneurysm, ruptured | NON-BILLABLE CODE |
| I71.50 | Thoracoabdominal aortic aneurysm, ruptured, unspecified | BILLABLE CODE |
| I71.51 | Supraceliac aneurysm of the thoracoabdominal aorta, ruptured | BILLABLE CODE |
| I71.52 | Paravisceral aneurysm of the thoracoabdominal aorta, ruptured | BILLABLE CODE |
| I71.6 | Thoracoabdominal aortic aneurysm, without rupture | NON-BILLABLE CODE |
| I71.60 | Thoracoabdominal aortic aneurysm, without rupture, unspecified | BILLABLE CODE |
| I71.61 | Supraceliac aneurysm of the thoracoabdominal aorta, without rupture | BILLABLE CODE |
| I71.62 | Paravisceral aneurysm of the thoracoabdominal aorta, without rupture | BILLABLE CODE |
| I71.8 | Aortic aneurysm of unspecified site, ruptured | BILLABLE CODE |
