ICD-10-CM category
I71: Aortic aneurysm and dissection
Codes under I71 (Aortic aneurysm and dissection). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| I71.0 | Dissection of aorta | — |
| I71.0 | Dissection of aorta | — |
| I71.00 | Dissection of unspecified site of aorta | ✓ |
| I71.00 | Dissection of unspecified site of aorta | ✓ |
| I71.01 | Dissection of thoracic aorta | — |
| I71.01 | Dissection of thoracic aorta | — |
| I71.1 | Thoracic aortic aneurysm, ruptured | — |
| I71.1 | Thoracic aortic aneurysm, ruptured | — |
| I71.02 | Dissection of abdominal aorta | ✓ |
| I71.02 | Dissection of abdominal aorta | ✓ |
| I71.2 | Thoracic aortic aneurysm, without rupture | — |
| I71.2 | Thoracic aortic aneurysm, without rupture | — |
| I71.03 | Dissection of thoracoabdominal aorta | ✓ |
| I71.03 | Dissection of thoracoabdominal aorta | ✓ |
| I71.3 | Abdominal aortic aneurysm, ruptured | — |
| I71.3 | Abdominal aortic aneurysm, ruptured | — |
| I71.4 | Abdominal aortic aneurysm, without rupture | — |
| I71.4 | Abdominal aortic aneurysm, without rupture | — |
| I71.5 | Thoracoabdominal aortic aneurysm, ruptured | — |
| I71.5 | Thoracoabdominal aortic aneurysm, ruptured | — |
| I71.6 | Thoracoabdominal aortic aneurysm, without rupture | — |
| I71.6 | Thoracoabdominal aortic aneurysm, without rupture | — |
| I71.8 | Aortic aneurysm of unspecified site, ruptured | ✓ |
| I71.8 | Aortic aneurysm of unspecified site, ruptured | ✓ |
| I71.9 | Aortic aneurysm of unspecified site, without rupture | ✓ |
| I71.9 | Aortic aneurysm of unspecified site, without rupture | ✓ |
| I71.010 | Dissection of ascending aorta | ✓ |
| I71.010 | Dissection of ascending aorta | ✓ |
| I71.10 | Thoracic aortic aneurysm, ruptured, unspecified | ✓ |
| I71.10 | Thoracic aortic aneurysm, ruptured, unspecified | ✓ |
| I71.011 | Dissection of aortic arch | ✓ |
| I71.011 | Dissection of aortic arch | ✓ |
| I71.11 | Aneurysm of the ascending aorta, ruptured | ✓ |
| I71.11 | Aneurysm of the ascending aorta, ruptured | ✓ |
| I71.012 | Dissection of descending thoracic aorta | ✓ |
| I71.012 | Dissection of descending thoracic aorta | ✓ |
| I71.12 | Aneurysm of the aortic arch, ruptured | ✓ |
| I71.12 | Aneurysm of the aortic arch, ruptured | ✓ |
| I71.13 | Aneurysm of the descending thoracic aorta, ruptured | ✓ |
| I71.13 | Aneurysm of the descending thoracic aorta, ruptured | ✓ |
| I71.019 | Dissection of thoracic aorta, unspecified | ✓ |
| I71.019 | Dissection of thoracic aorta, unspecified | ✓ |
| I71.20 | Thoracic aortic aneurysm, without rupture, unspecified | ✓ |
| I71.20 | Thoracic aortic aneurysm, without rupture, unspecified | ✓ |
| I71.21 | Aneurysm of the ascending aorta, without rupture | ✓ |
| I71.21 | Aneurysm of the ascending aorta, without rupture | ✓ |
| I71.22 | Aneurysm of the aortic arch, without rupture | ✓ |
| I71.22 | Aneurysm of the aortic arch, without rupture | ✓ |
| I71.23 | Aneurysm of the descending thoracic aorta, without rupture | ✓ |
| I71.23 | Aneurysm of the descending thoracic aorta, without rupture | ✓ |
| I71.30 | Abdominal aortic aneurysm, ruptured, unspecified | ✓ |
| I71.30 | Abdominal aortic aneurysm, ruptured, unspecified | ✓ |
| I71.31 | Pararenal abdominal aortic aneurysm, ruptured | ✓ |
| I71.31 | Pararenal abdominal aortic aneurysm, ruptured | ✓ |
| I71.32 | Juxtarenal abdominal aortic aneurysm, ruptured | ✓ |
| I71.32 | Juxtarenal abdominal aortic aneurysm, ruptured | ✓ |
| I71.33 | Infrarenal abdominal aortic aneurysm, ruptured | ✓ |
| I71.33 | Infrarenal abdominal aortic aneurysm, ruptured | ✓ |
| I71.40 | Abdominal aortic aneurysm, without rupture, unspecified | ✓ |
| I71.40 | Abdominal aortic aneurysm, without rupture, unspecified | ✓ |
| I71.41 | Pararenal abdominal aortic aneurysm, without rupture | ✓ |
| I71.41 | Pararenal abdominal aortic aneurysm, without rupture | ✓ |
| I71.42 | Juxtarenal abdominal aortic aneurysm, without rupture | ✓ |
| I71.42 | Juxtarenal abdominal aortic aneurysm, without rupture | ✓ |
| I71.43 | Infrarenal abdominal aortic aneurysm, without rupture | ✓ |
| I71.43 | Infrarenal abdominal aortic aneurysm, without rupture | ✓ |
| I71.50 | Thoracoabdominal aortic aneurysm, ruptured, unspecified | ✓ |
| I71.50 | Thoracoabdominal aortic aneurysm, ruptured, unspecified | ✓ |
| I71.51 | Supraceliac aneurysm of the thoracoabdominal aorta, ruptured | ✓ |
| I71.51 | Supraceliac aneurysm of the thoracoabdominal aorta, ruptured | ✓ |
| I71.52 | Paravisceral aneurysm of the thoracoabdominal aorta, ruptured | ✓ |
| I71.52 | Paravisceral aneurysm of the thoracoabdominal aorta, ruptured | ✓ |
| I71.60 | Thoracoabdominal aortic aneurysm, without rupture, unspecified | ✓ |
| I71.60 | Thoracoabdominal aortic aneurysm, without rupture, unspecified | ✓ |
| I71.61 | Supraceliac aneurysm of the thoracoabdominal aorta, without rupture | ✓ |
| I71.61 | Supraceliac aneurysm of the thoracoabdominal aorta, without rupture | ✓ |
| I71.62 | Paravisceral aneurysm of the thoracoabdominal aorta, without rupture | ✓ |
| I71.62 | Paravisceral aneurysm of the thoracoabdominal aorta, without rupture | ✓ |
Frequently asked questions
What is ICD-10-CM code I71?
I71 is an ICD-10-CM category covering Aortic aneurysm and dissection. It contains 78 more specific diagnosis codes, 62 of which are billable.
Is I71 a billable code?
No — I71 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example I71.0 — Dissection of aorta). 62 of the 78 codes under I71 are billable.
What codes fall under I71?
I71 includes I71.0, I71.0, I71.00, I71.00, I71.01, plus 73 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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