Infrarenal abdominal aortic aneurysm, ruptured

This diagnosis code signifies a life-threatening condition involving a ruptured aneurysm located in the abdominal aorta below the renal arteries. The rupture leads to acute hemorrhage, often presenting as severe abdominal or back pain, hypotension, and a pulsatile abdominal mass. Immediate surgical intervention is typically required due to the high mortality rate associated with this event.

Apply this code when documentation clearly indicates a ruptured abdominal aortic aneurysm specifically located infrarenally. This typically occurs in emergency settings where a patient presents with signs and symptoms of acute hemorrhage from an AAA, confirmed by imaging (e.g., CT angiography) or during surgical exploration.

• Ensure documentation specifies "ruptured" and "infrarenal" to accurately assign this code.
• Do not confuse with unruptured aneurysms or those located in other aortic segments (e.g., thoracic).
• Always sequence this code as the principal diagnosis when it is the condition chiefly responsible for the admission.