Coding and coverage · ICD-10-CM

Q24 Other congenital malformations of heart

Not billable (header)Chapter 17

Report one of the more specific codes below.

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Codes under this one

  • Q24.0 Dextrocardia
  • Q24.1 Levocardia
  • Q24.2 Cor triatriatum
  • Q24.3 Pulmonary infundibular stenosis
  • Q24.4 Congenital subaortic stenosis
  • Q24.5 Malformation of coronary vessels
  • Q24.6 Congenital heart block
  • Q24.8 Other specified congenital malformations of heart
  • Q24.9 Congenital malformation of heart, unspecified

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.
  • endocardial fibroelastosis (I42.4)

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.