ICD-10 Code I71.33 – Infrarenal abdominal aortic aneurysm, ruptured (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I71.33 – Infrarenal abdominal aortic aneurysm, ruptured
What it is
I71.33 identifies a ruptured abdominal aortic aneurysm located below the renal arteries. Use it when documentation states the aneurysm is infrarenal and has ruptured.
Clinical signs
Clinical features vary; refer to documentation. Standard references describe sudden abdominal, back, or flank pain, hypotension, and signs of shock, but the diagnosis should be supported by provider documentation or imaging.
When to use this code
Use this code when the record clearly documents an infrarenal abdominal aortic aneurysm with rupture. It fits emergency, inpatient, or operative notes that specify the infrarenal location and rupture status. If the location or rupture is not stated, check documentation before coding.
Do not use for
Do not use I71.33 for an unruptured aneurysm, a thoracic aneurysm, or an aneurysm at an unspecified aortic location. Check documentation if the record only says “AAA” or does not confirm rupture.
Coding tip
Code the exact anatomic site and rupture status from the provider’s final documentation, not from assumptions based on imaging wording alone.