I71.9 Aortic aneurysm of unspecified site, without rupture
Billable ICD-10-CM code, FY2026.
Applicable to
- Aneurysm of aorta
- Dilatation of aorta
- Hyaline necrosis of aorta
Applies from I71 Aortic aneurysm and dissection
Code first
- , if applicable:
- syphilitic aortic aneurysm (A52.01)
- traumatic aortic aneurysm (S25.09, S35.09)
Risk adjustment (HCC)
- CMS-HCC V22: HCC 108 — Vascular Disease
- ESRD V24: HCC 108
MS-DRG index
Defines the logic of DRG(s) 299-301 in MDC 05.
Approximate ICD-9-CM (GEMs)
441.9 Aortic aneurysm of unspecified site without mention of rupture (approximate)
Code annotations containing back-references to I71.9
Back-references to I71
- Type 2 Excludes:
I72 Other aneurysm ("aneurysm (of) aorta (I71.-)") - Type 1 Excludes:
I77.81 Aortic ectasia ("aortic aneurysm and dissection (I71.-)")
Diagnosis Index entries for I71.9
- Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › aorta, aortic (nonsyphilitic)
- Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › aorta, aortic (nonsyphilitic) › arteriosclerotic
- Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › aorta, aortic (nonsyphilitic) › descending
- Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › cylindroid (aorta)
- Disease, diseased › Fernels' (aortic aneurysm)
- Fernell's disease (aortic aneurysm)
Nearby codes
I71.6 Thoracoabdominal aortic aneurysm, without ruptureI71.60 Thoracoabdominal aortic aneurysm, without rupture, unspecifiedI71.61 Supraceliac aneurysm of the thoracoabdominal aorta, without ruptureI71.62 Paravisceral aneurysm of the thoracoabdominal aorta, without ruptureI71.8 Aortic aneurysm of unspecified site, rupturedI71.9 Aortic aneurysm of unspecified site, without rupture (this code)