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    v1.0.28
    OpenPayerBilling CodesCongenital malformations of the circulatory systemICD-10-CM q24-other-congenital-malformations-of-heart
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    ICD-10-CM Code For Other Congenital Malformations Of Heart: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group Q24 includes congenital cardiac anomalies not classified elsewhere, such as malformations of cardiac chambers, valves, and outflow tracts. These ICD-10-CM diagnosis codes are used to document congenital structural heart defects, capturing anatomic detail, associated complications, and clinical complexity relevant to congenital cardiology. Accurate coding within the ICD-10-CM Q24 group supports proper claim adjudication and complete clinical documentation for care coordination and reimbursement.

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    ICD-10-CM Q24: Other Congenital Malformations Of Heart Overview

    This group represents congenital cardiac malformations that do not fall into more specific congenital heart defect categories, involving structural abnormalities of the heart present at birth. It targets the circulatory system and includes diverse anatomic defects that can affect cardiac function and hemodynamics. Accurate coding is important for clinical records, appropriate billing, and ensuring claims are adjudicated correctly.

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    When to Use

    Use a code from this group when a congenital structural heart anomaly is diagnosed and the defect does not fit a more specific ICD-10-CM congenital heart category. Select codes that reflect the documented anatomic site, laterality if specified, and any associated complications to support clinical and billing records.

    ICD-10-CM Codes

    9 rows

    ICD-10-CM CodeDescription
    Q24.0Dextrocardia
    Q24.1Levocardia
    Q24.2Cor triatriatum
    Q24.3Pulmonary infundibular stenosis
    Q24.4Congenital subaortic stenosis
    Q24.5Malformation of coronary vessels
    Q24.6Congenital heart block
    Q24.8Other specified congenital malformations of heart
    Q24.9Congenital malformation of heart, unspecified

    DRG Codes

    5 rows

    DRG CodeDescription
    306Cardiac Congenital and Valvular Disorders with MCC
    307Cardiac Congenital and Valvular Disorders without MCC
    308Cardiac Arrhythmia and Conduction Disorders with MCC
    309Cardiac Arrhythmia and Conduction Disorders with CC
    310Cardiac Arrhythmia and Conduction Disorders without CC/MCC

    Typical Clinical Scenarios

    • A term newborn in the neonatal nursery is noted to be cyanotic with a harsh systolic murmur and respiratory distress shortly after birth; echocardiography reveals an isolated malformation such as a double inlet ventricle or other unclassified structural cardiac defect causing significant shunting and compromised oxygenation, prompting stabilization and neonatal cardiology consultation. A congenital malformation code from this group is assigned to capture the primary structural anomaly identified on echo. Typical codes: Q24.8, Q24.9
    • An adult patient with a history of repaired congenital heart disease presents for routine cardiology follow-up with progressive exertional dyspnea and echocardiographic evidence of right ventricular dilation due to a previously uncorrected or residual atrial septal malformation; the visit documents the chronic congenital defect as the underlying cause of current symptoms and management. A chronic congenital malformation code is assigned to reflect the long-standing structural abnormality contributing to heart failure symptoms. Typical codes: Q24.1, Q24.9
    • A pediatric patient is admitted with infective endocarditis superimposed on a known congenital malformation of the tricuspid valve, presenting with fever, positive blood cultures, and new regurgitant murmur; the congenital valve malformation is documented as the predisposing condition complicating the infectious process and guiding surgical planning. Coding includes the congenital malformation as the comorbid structural diagnosis alongside the acute infection. Typical codes: Q24.2, Q24.9}

    Related Codes

    Q20-CONGENITAL-CARDIAC-CHAMBERS-AND-CONNECTIONS

    ICD-10-CM Code For Congenital Malformations Of Cardiac Chambers And Connections: Group Overview

    Q21-CONGENITAL-CARDIAC-SEPTAL-DEFECTS

    ICD-10-CM Code For Congenital Malformations Of Cardiac Septa: Group Overview

    Q22-CONGENITAL-PULMONARY-TRICUSPID-VALVE

    ICD-10-CM Code For Congenital Malformations Of Pulmonary And Tricuspid Valves: Group Overview

    Q23-CONGENITAL-AORTIC-AND-MITRAL-VALVE-MALFORMATIONS

    ICD-10-CM Code For Congenital Malformations Of Aortic And Mitral Valves: Group Overview

    Q25-CONGENITAL-MALFORMATIONS-OF-GREAT-ARTERIES

    ICD-10-CM Code For Congenital Malformations Of Great Arteries: Group Overview

    Q26-CONGENITAL-MALFORMATIONS-GREAT-VEINS

    ICD-10-CM Code For Congenital Malformations Of Great Veins: Group Overview

    Q27-OTHER-CONGENITAL-PERIPHERAL-VASCULAR-MALFORMATIONS

    ICD-10-CM Code For Other Congenital Malformations Of Peripheral Vascular System: Group Overview

    Q28-OTHER-CONGENITAL-CIRCULATORY-MALFORMATIONS

    ICD-10-CM Code For Other Congenital Malformations Of Circulatory System: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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