Aneurysm of the aortic arch, ruptured

This diagnosis code signifies a life-threatening condition where the wall of the aortic arch has weakened and torn, leading to internal bleeding. This rupture is a medical emergency requiring immediate intervention due to the high risk of severe hemorrhage and circulatory collapse.

This code is appropriate for patients presenting with acute symptoms of aortic rupture, such as sudden severe chest or back pain, hypotension, and signs of hypovolemic shock, where imaging confirms a ruptured aneurysm specifically located in the aortic arch. Documentation must clearly state both the rupture and the anatomical location.

• Always confirm the specific anatomical location of the ruptured aneurysm (e.g., ascending, descending, arch) as distinct codes exist for each.
• Do not confuse with dissection without rupture, which is coded differently.
• Sequence this code as the principal diagnosis when it is the primary reason for the encounter and treatment.