Cardiology Coding Alert

• I71.1- (Thoracic aortic aneurysm, ruptured)
• I71.2- (Thoracic aortic aneurysm without rupture)
• I71.3- (Abdominal aortic aneurysm, ruptured)
• I71.4- (Abdominal aortic aneurysm without rupture)
• I71.5- (Thoracoabdominal aortic aneurysm, ruptured)
• I71.6- (Thoracoabdominal aortic aneurysm without rupture)

Beginning on October 1, you’ll need to report those codes with a 5th character that provides more detail about the anatomic site of the aneurysm. If you have no further information than what’s described by the current codes, you’ll need to add a “0” as the 5th character to indicate “unspecified.”

For each of the thoracic codes, the 5th character adds the following anatomic information:

• 1 Ascending aorta
• 2 Aortic arch
• 3 Descending thoracic aorta

For the abdominal aortic aneurysm codes look at these 5th digit additions:

• 1 Pararenal
• 2 Juxtarenal
• 3 Infrarenal

For thoracoabdominal aortic aneurysm codes, new 5th digit options include the following:

• 1 Supraceliac
• 2 Paravisceral

Therefore, the new ICD-10-CM codes you will see for aneurysms in 2023 are as follows:

• I71.10 (Thoracic aortic aneurysm, ruptured, unspecified)-I71.13 (Aneurysm of the descending thoracic aorta, ruptured) and I71.20 (Thoracic aortic aneurysm, without rupture, unspecified)-I71.23 (Aneurysm of the descending thoracic aorta, without rupture) for thoracic aortic aneurysms
• I71.30 (Abdominal aortic aneurysm, ruptured, unspecified)-I71.33 (Infrarenal abdominal aortic aneurysm, ruptured) and I71.40 (Abdominal aortic aneurysm, without rupture, unspecified)-I71.43 (Infrarenal abdominal aortic aneurysm, without rupture) for abdominal aortic aneurysms
• I71.50 (Thoracoabdominal aortic aneurysm, ruptured, unspecified)-I71.52 (Paravisceral aneurysm of the abdominal aorta, ruptured) and I71.60 (Thoracoabdominal aortic aneurysm, without rupture, unspecified)-I71.62 (Paravisceral aneurysm of the abdominal aorta, without rupture) for thoracoabdominal aortic aneurysms.