ICD-10 Code I71.8 – Aortic aneurysm of unspecified site, ruptured (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I71.8 – Aortic aneurysm of unspecified site, ruptured
What it is
This code identifies a ruptured aneurysm of the aorta when the site is not specified. Use it when documentation confirms rupture but does not name the exact aortic segment.
Clinical signs
Clinical features vary; refer to documentation. Rupture may present with sudden severe pain, shock, or other signs of acute vascular emergency, but the record must support the diagnosis.
When to use this code
Use I71.8 when the provider documents a ruptured aortic aneurysm and does not specify thoracic, abdominal, or another aortic location. It may also apply when imaging or operative notes confirm rupture without a precise site. Do not infer the site from context alone.
Do not use for
Do not use this code for an unruptured aortic aneurysm or for a ruptured aneurysm with a documented specific aortic location. Check documentation if the record only says “aortic aneurysm” without rupture.
Coding tip
Code the highest level of specificity available, and query for the exact aortic site whenever the rupture is documented but the location is unclear.