I71.8Aortic aneurysm of unspecified site, ruptured

I71.8 is the ICD-10-CM diagnosis code for aortic aneurysm of unspecified site, ruptured. It belongs to category I71 (aortic aneurysm and dissection), block I70-I79 (diseases of arteries, arterioles and capillaries) and chapter 9 (diseases of the circulatory system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within I71, choose I71.8 (Aortic aneurysm of unspecified site, ruptured) only when documentation doesn't support a more specific option: dissection of aorta (I71.0), thoracic aortic aneurysm, ruptured (I71.1), thoracic aortic aneurysm, without rupture (I71.2), abdominal aortic aneurysm, ruptured (I71.3), abdominal aortic aneurysm, without rupture (I71.4), thoracoabdominal aortic aneurysm, ruptured (I71.5), thoracoabdominal aortic aneurysm, without rupture (I71.6) and aortic aneurysm of unspecified site, without rupture (I71.9).

Code first , if applicable: syphilitic aortic aneurysm (A52.01) and traumatic aortic aneurysm (S25.09, S35.09).

As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 299 (Peripheral Vascular Disorders with MCC, relative weight 1.5842), DRG 300 (Peripheral Vascular Disorders with CC, relative weight 1.0464) and DRG 301 (Peripheral Vascular Disorders without CC/MCC, relative weight 0.7133), in MDC 05 (Diseases and Disorders of the Circulatory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 441.5 (aortic aneurysm of unspecified site, ruptured).