ICD-10-CM 2027
ICD-10 code for abdominal aorta aneurysm
From the official ICD-10-CM alphabetic index entry “Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › abdominal (aorta)”. Page updated September 29, 2026.
About coding abdominal aorta aneurysm
The ICD-10-CM code for abdominal aorta aneurysm is I71.40 (Abdominal aortic aneurysm, without rupture, unspecified). The official index lists 8 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on I71.40.
Within I71.4, choose I71.40 (unspecified) only when documentation doesn't support a more specific option: Pararenal abdominal aortic aneurysm, without rupture (I71.41), Juxtarenal abdominal aortic aneurysm, without rupture (I71.42) and Infrarenal abdominal aortic aneurysm, without rupture (I71.43).
Code first , if applicable: syphilitic aortic aneurysm (A52.01) and traumatic aortic aneurysm (S25.09, S35.09).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific abdominal aorta aneurysm codes (official index)
- infrarenal I71.43 — Infrarenal abdominal aortic aneurysm, without rupture
- ruptured I71.33 — Infrarenal abdominal aortic aneurysm, ruptured
- juxtarenal I71.42 — Juxtarenal abdominal aortic aneurysm, without rupture
- ruptured I71.32 — Juxtarenal abdominal aortic aneurysm, ruptured
- pararenal I71.41 — Pararenal abdominal aortic aneurysm, without rupture
- ruptured I71.31 — Pararenal abdominal aortic aneurysm, ruptured
- ruptured I71.30 — Abdominal aortic aneurysm, ruptured, unspecified
- syphilitic A52.01 — Syphilitic aneurysm of aorta
Common questions about abdominal aorta aneurysm ICD-10 codes
What is the ICD-10 code for abdominal aorta aneurysm?
- I71.40 — Abdominal aortic aneurysm, without rupture, unspecified. More specific codes apply when the documentation supports them: I71.43, I71.33, I71.42, I71.32 and others below.
What is the ICD-10 code for infrarenal abdominal aorta aneurysm?
- I71.43 — Infrarenal abdominal aortic aneurysm, without rupture.
What is the ICD-10 code for juxtarenal abdominal aorta aneurysm?
- I71.42 — Juxtarenal abdominal aortic aneurysm, without rupture.
What is the ICD-10 code for pararenal abdominal aorta aneurysm?
- I71.41 — Pararenal abdominal aortic aneurysm, without rupture.
What is the ICD-10 code for ruptured abdominal aorta aneurysm?
- I71.30 — Abdominal aortic aneurysm, ruptured, unspecified.
What is the ICD-10 code for syphilitic abdominal aorta aneurysm?
- A52.01 — Syphilitic aneurysm of aorta.
Is I71.40 billable?
- Yes. I71.40 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I71.40 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I71.40 as a principal diagnosis.
Is I71.40 a CC or MCC?
- No. I71.40 is neither a CC nor an MCC under MS-DRG v44.0.