Q25.43Congenital aneurysm of aorta

Q25.43 is the ICD-10-CM diagnosis code for congenital aneurysm of aorta. It belongs to category Q25 (congenital malformations of great arteries), block Q20-Q28 (congenital malformations of the circulatory system) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Q25.4 (other congenital malformations of aorta), Q25.43 is specifically for congenital aneurysm of aorta. Related codes cover congenital malformation of aorta unspecified (Q25.40), absence and aplasia of aorta (Q25.41), hypoplasia of aorta (Q25.42), congenital dilation of aorta (Q25.44), Double aortic arch (Q25.45), Tortuous aortic arch (Q25.46), right aortic arch (Q25.47), anomalous origin of subclavian artery (Q25.48) and 1 more.

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" 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 306 (Cardiac Congenital and Valvular Disorders with MCC, relative weight 1.546) and DRG 307 (Cardiac Congenital and Valvular Disorders without MCC, relative weight 0.9148), 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 is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

It was added in FY2017, effective October 1, 2016.

Before ICD-10, this condition was coded in ICD-9-CM as 747.29 (other anomalies of aorta).