Cardiology Coding Alert

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Prep for New 2023 ICD-10-CM Aneurysm Codes

Question: From my research, it looks like we will gain some new aneurysm ICD-10-CM codes in 2023. Can you tell me more about those new codes?

Ohio Subscriber

Answer: ICD-10-CM currently provides the following four-character codes for aortic aneurysm based on region and with or without rupture:

  • 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.

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