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ICD-10-CM 2027 diagnosis code

Q25.2Atresia of aorta

Not billable — use a more specific code

Q25.2 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Q25.2

Q25.2 is the ICD-10-CM diagnosis code for atresia 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 a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within Q25 (congenital malformations of great arteries), Q25.2 is specifically for atresia of aorta. Related codes cover Patent ductus arteriosus (Q25.0), coarctation of aorta (Q25.1), Supravalvular aortic stenosis (Q25.3), other congenital malformations of aorta (Q25.4), atresia of pulmonary artery (Q25.5), stenosis of pulmonary artery (Q25.6), other congenital malformations of pulmonary artery (Q25.7), other congenital malformations of other great arteries (Q25.8) and 1 more.

To report this condition, pick the subcode that matches the documentation: Q25.21 (arch) and Q25.29 (aorta).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2017 (expanded into subcodes).

Specific codes under Q25.2

Notes that apply from higher levels

Instructions written at a parent level also apply to Q25.2.

Broader instructions also apply from Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • FY2017 (effective 10/1/2016): Expanded — no longer billable

Common questions about Q25.2

Is Q25.2 billable?

No. Q25.2 is a header code. Report one of its more specific subcodes instead.