2026 ICD-10-CM Diagnosis Code Q24Other congenital malformations of heart

ICD-10-CM Codes›Q00-Q99›Q20-Q28›Q24

ICD-10-CM Q24
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q24 is a non-billable ICD-10-CM category code for other congenital malformations of heart, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Q24.0, Q24.1, Q24.2, and Q24.3.

Code Identity

ICD-10-CM Code
Q24
Billable Status
No — Non-Billable Category
Code Describes
Other congenital malformations of heart
Chapter
Q20-Q28
Congenital malformations of the circulatory system

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ20-Q28Congenital malformations of the circulatory system
CategoryQ24Other congenital malformations of heart
This CodeQ24Other congenital malformations of heart

Specific Coding for Other congenital malformations of heartOverview

Non-specific codes like Q24 require more characters. Use one of these billable codes instead:

  • Use Q24.0 for Dextrocardia

  • Use Q24.1 for Levocardia

  • Use Q24.2 for Cor triatriatum

  • Use Q24.3 for Pulmonary infundibular stenosis

  • Use Q24.4 for Congenital subaortic stenosis

  • Use Q24.5 for Malformation of coronary vessels

  • Use Q24.6 for Congenital heart block

  • Use Q24.8 for Other specified congenital malformations of heart

  • Use Q24.9 for Congenital malformation of heart, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • endocardial fibroelastosis I42.4

Patient EducationClinical

Congenital Heart Defects

Congenital heart defects (CHDs) are problems with the structure of the heart. "Congenital" means that that the problems are present at birth. These defects happen when a fetus's heart doesn't develop normally during pregnancy. Congenital heart defects are the most common type of birth defect.

The full article covers:

  • What are congenital heart defects?
  • What causes congenital heart defects?
  • Who is more likely to have a baby with a congenital heart defect?
  • What are the symptoms of congenital heart defects?
  • What other problems do congenital heart defects cause?
  • How are congenital heart defects diagnosed?
  • What are the treatments for congenital heart defects?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Q24Overview

Is Q24 (Other congenital malformations of heart) a billable code?

No. This is a category header that groups the codes for other congenital malformations of heart, and headers cannot be submitted on claims. Claims for other congenital malformations of heart need a more specific code from this category, such as Q24.0, Q24.1, and Q24.2.