Alphabetic Index FY2027

I71.9

Aortic aneurysm of unspecified site, without rupture

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

BillableComplete code, valid to report

I71.9 (also written I719) is a billable ICD-10-CM diagnosis code for aortic aneurysm of unspecified site, without rupture. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 31 codes in category I71 (Aortic aneurysm and dissection). The Alphabetic Index lists it under 6 entries. 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.-)

Inclusion terms

Conditions classified to this code.

This code
  • Aneurysm of aorta
  • Dilatation of aorta
  • Hyaline necrosis of aorta

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 6 entries