I71.6

Thoracoabdominal aortic aneurysm, without rupture

FY2027Chapter 9: Diseases of the circulatory system/I70–I79 Diseases of arteries, arterioles and capillaries

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

I71.6 is a non-billable ICD-10-CM code header for thoracoabdominal aortic aneurysm, without rupture. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are I71.60 Thoracoabdominal aortic aneurysm, without rupture, unspecified; I71.61 Supraceliac aneurysm of the thoracoabdominal aorta, without rupture and I71.62 Paravisceral aneurysm of the thoracoabdominal aorta, without rupture. Its coding notes include a Code first instruction and 10 Excludes2 entries.

Code first

If the underlying condition listed here is present and known, sequence it first.

Inherited from I71 Aortic aneurysm and dissection
  • , if applicable:

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (10 notes)
Inherited from Chapter 9 Diseases of the circulatory system
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

More specific codes under I71.6 3