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    v1.0.28
    OpenPayerBilling CodesChronic rheumatic heart diseasesICD-10-CM i05-rheumatic-mitral-valve-diseases
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    ICD-10-CM Code For Rheumatic Mitral Valve Diseases: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I05 includes chronic rheumatic mitral valve diseases such as rheumatic mitral stenosis, rheumatic mitral regurgitation, and mixed rheumatic mitral valve disorders resulting from prior rheumatic fever. These ICD-10-CM diagnosis codes are used to document valvular involvement due to rheumatic heart disease, capturing disease type, severity, and any associated complications relevant to the mitral valve. Accurate coding within the ICD-10-CM I05 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM I05: Rheumatic Mitral Valve Diseases Overview

    This group represents chronic rheumatic diseases affecting the mitral valve, including mitral stenosis, mitral regurgitation, and mixed mitral valvular disorders resulting from rheumatic fever. These conditions target the cardiac valvular structures and can lead to heart failure, arrhythmia, and other cardiovascular complications. Accurate coding ensures the clinical picture is captured for longitudinal care, quality reporting, and appropriate reimbursement.

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    When to Use

    Use a code from this group when clinical documentation attributes mitral valve disease to rheumatic heart disease or prior rheumatic fever. Select the code that reflects the specific mitral lesion (stenosis, regurgitation, or mixed) and any documented severity or complications.

    ICD-10-CM Codes

    5 rows

    ICD-10-CM CodeDescription
    I05.0Rheumatic mitral stenosis
    I05.1Rheumatic mitral insufficiency
    I05.2Rheumatic mitral stenosis with insufficiency
    I05.8Other rheumatic mitral valve diseases
    I05.9Rheumatic mitral valve disease, unspecified

    DRG Codes

    2 rows

    DRG CodeDescription
    306Cardiac Congenital and Valvular Disorders with MCC
    307Cardiac Congenital and Valvular Disorders without MCC

    Typical Clinical Scenarios

    • An adult patient with a history of childhood rheumatic fever presents to cardiology clinic with progressive exertional dyspnea and a loud diastolic murmur; echocardiography demonstrates thickened, restricted mitral valve leaflets with moderate to severe mitral stenosis and left atrial enlargement, indicating chronic rheumatic mitral stenosis. The visit is for ongoing management and surveillance of a chronic valvular lesion caused by prior rheumatic carditis, so a code for rheumatic mitral stenosis is assigned. Typical codes: I05.0, I05.1
    • A middle-aged patient is admitted from the emergency department with acute congestive heart failure symptoms (orthopnea, pulmonary edema) on a background of known rheumatic mitral valve disease; imaging shows severe mitral regurgitation from chronic rheumatic changes and decompensation requires diuretics and close monitoring. Because the acute exacerbation is due to chronic rheumatic mitral regurgitation, the relevant chronic rheumatic mitral valve code is documented as the primary diagnosis. Typical codes: I05.2, I05.8
    • A patient undergoing preoperative evaluation for valve repair has a history of rheumatic involvement of the mitral valve but currently has no active infection; the record documents unspecified chronic rheumatic mitral disease as the reason for the planned procedure and for long-term follow-up. The code for an unspecified or other chronic rheumatic mitral valve disorder is used when the clinical documentation does not specify stenosis versus regurgitation or when a less specific rheumatic mitral diagnosis is documented. Typical codes: I05.9, I05.8

    Related Codes

    I06-RHEUMATIC-AORTIC-VALVE-DISEASES

    ICD-10-CM Code For Rheumatic Aortic Valve Diseases: Group Overview

    I07-RHEUMATIC-TRICUSPID-VALVE-DISEASES

    ICD-10-CM Code For Rheumatic Tricuspid Valve Diseases: Group Overview

    I08-MULTIPLE-VALVE-DISEASES

    ICD-10-CM Code For Multiple Valve Diseases: Group Overview

    I09-OTHER-RHEUMATIC-HEART-DISEASES

    ICD-10-CM Code For Other Rheumatic Heart Diseases: 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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