Q20.4Billable
Double inlet ventricle
- Chapter
- 17. Congenital malformations, deformations and chromosomal abnormalities
- Category
- Q20
- Effective date
- October 1, 2026
Related codes in category Q20
Q20Congenital malformations of cardiac chambers and connectionsQ20.0Common arterial trunkYesQ20.1Double outlet right ventricleYesQ20.2Double outlet left ventricleYesQ20.3Discordant ventriculoarterial connectionYesQ20.5Discordant atrioventricular connectionYesQ20.6Isomerism of atrial appendagesYesQ20.8Oth congenital malform of cardiac chambers and connectionsYesQ20.9Congenital malform of cardiac chambers and connections, unspYes
Frequently asked questions
What is ICD-10 code Q20.4?
Q20.4 is an ICD-10-CM diagnosis code for Double inlet ventricle.
Is Q20.4 a billable code?
Yes. Q20.4 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is Q20.4 in?
Q20.4 falls under Chapter 17: Congenital malformations, deformations and chromosomal abnormalities.
When did Q20.4 become effective?
Q20.4 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to Q20.4?
Q20.4 belongs to category Q20, which includes 9 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.