1. I71 Aortic aneurysm and dissection

    1. I71.0 Dissection of aorta

      1. I71.00 Dissection of unspecified site of aorta

      2. I71.01 Dissection of thoracic aorta

      3. I71.02 Dissection of abdominal aorta

      4. I71.03 Dissection of thoracoabdominal aorta

    2. I71.1 Thoracic aortic aneurysm, ruptured

    3. I71.2 Thoracic aortic aneurysm, without rupture

    4. I71.3 Abdominal aortic aneurysm, ruptured

    5. I71.4 Abdominal aortic aneurysm, without rupture

    6. I71.5 Thoracoabdominal aortic aneurysm, ruptured

    7. I71.6 Thoracoabdominal aortic aneurysm, without rupture

    8. I71.8 Aortic aneurysm of unspecified site, ruptured

      Inclusion term(s):

      • Rupture of aorta NOS
    9. I71.9 Aortic aneurysm of unspecified site, without rupture

      Inclusion term(s):

      • Aneurysm of aorta
      • Dilatation of aorta
      • Hyaline necrosis of aorta
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.