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	—
I71.00	Dissection of unspecified site of aorta	✓
I71.01	Dissection of thoracic aorta	—
I71.1	Thoracic aortic aneurysm, ruptured	—
I71.02	Dissection of abdominal aorta	✓
I71.2	Thoracic aortic aneurysm, without rupture	—
I71.03	Dissection of thoracoabdominal aorta	✓
I71.3	Abdominal aortic aneurysm, ruptured	—
I71.4	Abdominal aortic aneurysm, without rupture	—
I71.5	Thoracoabdominal aortic aneurysm, ruptured	—
I71.6	Thoracoabdominal aortic aneurysm, without rupture	—
I71.8	Aortic aneurysm of unspecified site, ruptured	✓
I71.9	Aortic aneurysm of unspecified site, without rupture	✓
I71.010	Dissection of ascending aorta	✓
I71.10	Thoracic aortic aneurysm, ruptured, unspecified	✓
I71.011	Dissection of aortic arch	✓
I71.11	Aneurysm of the ascending aorta, ruptured	✓
I71.012	Dissection of descending thoracic aorta	✓
I71.12	Aneurysm of the aortic arch, ruptured	✓
I71.13	Aneurysm of the descending thoracic aorta, ruptured	✓
I71.019	Dissection of thoracic aorta, unspecified	✓
I71.20	Thoracic aortic aneurysm, without rupture, unspecified	✓
I71.21	Aneurysm of the ascending aorta, without rupture	✓
I71.22	Aneurysm of the aortic arch, without rupture	✓
I71.23	Aneurysm of the descending thoracic aorta, without rupture	✓
I71.30	Abdominal aortic aneurysm, ruptured, unspecified	✓
I71.31	Pararenal abdominal aortic aneurysm, ruptured	✓
I71.32	Juxtarenal abdominal aortic aneurysm, ruptured	✓
I71.33	Infrarenal abdominal aortic aneurysm, ruptured	✓
I71.40	Abdominal aortic aneurysm, without rupture, unspecified	✓
I71.41	Pararenal abdominal aortic aneurysm, without rupture	✓
I71.42	Juxtarenal abdominal aortic aneurysm, without rupture	✓
I71.43	Infrarenal abdominal aortic aneurysm, without rupture	✓
I71.50	Thoracoabdominal aortic aneurysm, ruptured, unspecified	✓
I71.51	Supraceliac aneurysm of the thoracoabdominal aorta, ruptured	✓
I71.52	Paravisceral aneurysm of the thoracoabdominal aorta, ruptured	✓
I71.60	Thoracoabdominal aortic aneurysm, without rupture, unspecified	✓
I71.61	Supraceliac aneurysm of the thoracoabdominal aorta, without rupture	✓
I71.62	Paravisceral aneurysm of the thoracoabdominal aorta, without rupture	✓

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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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