Q24.4Billable
Congenital subaortic stenosis
- Chapter
- 17. Congenital malformations, deformations and chromosomal abnormalities
- Category
- Q24
- Effective date
- October 1, 2026
Related codes in category Q24
Q24Other congenital malformations of heartQ24.0DextrocardiaYesQ24.1LevocardiaYesQ24.2Cor triatriatumYesQ24.3Pulmonary infundibular stenosisYesQ24.5Malformation of coronary vesselsYesQ24.6Congenital heart blockYesQ24.8Other specified congenital malformations of heartYesQ24.9Congenital malformation of heart, unspecifiedYes
Frequently asked questions
What is ICD-10 code Q24.4?
Q24.4 is an ICD-10-CM diagnosis code for Congenital subaortic stenosis.
Is Q24.4 a billable code?
Yes. Q24.4 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is Q24.4 in?
Q24.4 falls under Chapter 17: Congenital malformations, deformations and chromosomal abnormalities.
When did Q24.4 become effective?
Q24.4 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to Q24.4?
Q24.4 belongs to category Q24, 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.