ICD-10 Code I71.31 – Pararenal abdominal aortic aneurysm, ruptured (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I71.31 – Pararenal abdominal aortic aneurysm, ruptured
What it is
This code identifies a ruptured pararenal abdominal aortic aneurysm, meaning the enlarged aorta has torn and the dilatation involves the segment near the renal arteries. Use it when documentation specifies rupture and pararenal location.
Clinical signs
Clinical features vary; refer to documentation. Rupture is typically associated with sudden abdominal, back, or flank pain and signs of acute blood loss or shock. Imaging or operative findings may confirm the aneurysm location.
When to use this code
Use I71.31 when the provider documents a ruptured pararenal abdominal aortic aneurysm, whether identified in the emergency department, on imaging, or during surgery. You may also use it when the final diagnosis clearly states rupture with pararenal involvement.
Do not use for
Do not use this code for an unruptured aneurysm, a thoracic aortic aneurysm, or a nonspecific abdominal aortic aneurysm without pararenal detail. Check documentation if the site or rupture status is unclear.
Coding tip
Code the rupture and exact aneurysm location from the final provider statement; if either element is missing, query for clarification.