Q25.4 Other congenital malformations of aorta

Not billable (header)Chapter 17

Report one of the more specific codes below.

Check coverage with this diagnosis

Codes under this one

Q25.40 Congenital malformation of aorta unspecified
Q25.41 Absence and aplasia of aorta
Q25.42 Hypoplasia of aorta
Q25.43 Congenital aneurysm of aorta
Q25.44 Congenital dilation of aorta
Q25.45 Double aortic arch
Q25.46 Tortuous aortic arch
Q25.47 Right aortic arch
Q25.48 Anomalous origin of subclavian artery
Q25.49 Other congenital malformations of aorta

Instructional notes

Chapter 17

Excludes2Not included here: the patient may have both; report both when both are present.

inborn errors of metabolism (E70-E88)

Notes

Codes from this chapter are not for use on maternal records

This code

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.

hypoplasia of aorta in hypoplastic left heart syndrome (Q23.4)

Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1) · Q20-Q28 Congenital malformations of the circulatory system (Q20-Q28)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.