ICD-10-CM 2027
ICD-10 code for thoracoabdominal aorta aneurysm
From the official ICD-10-CM alphabetic index entry “Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › thoracoabdominal (aorta)”. Page updated September 29, 2026.
About coding thoracoabdominal aorta aneurysm
The ICD-10-CM code for thoracoabdominal aorta aneurysm is I71.60 (Thoracoabdominal aortic aneurysm, without rupture, unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on I71.60.
Within I71.6, choose I71.60 (unspecified) only when documentation doesn't support a more specific option: Supraceliac aneurysm of the thoracoabdominal aorta, without rupture (I71.61) and Paravisceral aneurysm of the thoracoabdominal aorta, without rupture (I71.62).
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 thoracoabdominal aorta aneurysm codes (official index)
Common questions about thoracoabdominal aorta aneurysm ICD-10 codes
What is the ICD-10 code for thoracoabdominal aorta aneurysm?
- I71.60 — Thoracoabdominal aortic aneurysm, without rupture, unspecified. More specific codes apply when the documentation supports them: I71.50, A52.01.
What is the ICD-10 code for ruptured thoracoabdominal aorta aneurysm?
- I71.50 — Thoracoabdominal aortic aneurysm, ruptured, unspecified.
What is the ICD-10 code for syphilitic thoracoabdominal aorta aneurysm?
- A52.01 — Syphilitic aneurysm of aorta.
Is I71.60 billable?
- Yes. I71.60 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I71.60 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I71.60 as a principal diagnosis.
Is I71.60 a CC or MCC?
- No. I71.60 is neither a CC nor an MCC under MS-DRG v44.0.