ICD-10 Code I71.4 – Abdominal aortic aneurysm, without rupture (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I71.4 – Abdominal aortic aneurysm, without rupture
What it is
I71.4 identifies an abdominal aortic aneurysm that is present but not ruptured. Use it for a dilation of the abdominal aorta documented as an aneurysm without evidence of leak or rupture.
Clinical signs
Many cases are asymptomatic and found on imaging or exam. When present, features may include a pulsatile abdominal mass, abdominal or back pain, or incidental aneurysm measurement on ultrasound, CT, or MRI.
When to use this code
Use I71.4 when the record clearly states an abdominal aortic aneurysm and there is no mention of rupture, dissection, or repair complications. It also applies when the aneurysm is being monitored or evaluated without acute instability. Check documentation if the note only says “aortic aneurysm” without location.
Do not use for
Do not use this code for ruptured abdominal aortic aneurysm or for thoracic aortic aneurysm. If the documentation is nonspecific or another aortic segment is involved, check documentation and code accordingly.
Coding tip
Confirm the abdominal location and the phrase “without rupture” in the provider note before assigning I71.4.