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    v1.0.28
    OpenPayerBilling CodesOther forms of heart diseaseICD-10-CM i39-endocarditis-and-heart-valve-disorders
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    ICD-10-CM Code For Endocarditis And Heart Valve Disorders In Diseases Classified Elsewhere: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I39 includes endocarditis and heart valve disorders that arise in the context of diseases classified elsewhere, such as infections or systemic conditions affecting cardiac valves. These ICD-10-CM diagnosis codes are used to document valvular infection, inflammation, or dysfunction occurring secondary to another primary disease, capturing the presence and clinical complexity of cardiac involvement. Accurate coding within the ICD-10-CM I39 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM I39: Endocarditis And Heart Valve Disorders In Diseases Classified Elsewhere Overview

    The ICD-10-CM I39 group represents infections and structural valve disorders that occur as manifestations of other systemic diseases, targeting the heart valves and endocardial surfaces. These codes capture valvular involvement secondary to infectious or noninfectious processes and are used in classifying cardiovascular complications linked to other conditions. Accurate coding is important for complete clinical documentation and supports appropriate reimbursement for care related to complex cardiac disease.

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    When to Use

    Use a code from this group when documentation indicates endocarditis or a heart valve disorder is secondary to another diagnosed disease and the primary condition is reported separately. Apply these codes to capture cardiac involvement for clinical records, billing, and epidemiologic reporting when the valve pathology is explicitly linked to another condition.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    I39Endocarditis and heart valve disorders in diseases classified elsewhere

    DRG Codes

    4 rows

    DRG CodeDescription
    306Cardiac Congenital and Valvular Disorders with MCC
    307Cardiac Congenital and Valvular Disorders without MCC
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • An adult patient presents to the emergency department with fever, new-onset heart murmur, and signs of systemic emboli (e.g., splinter hemorrhages, petechiae). Blood cultures grow group A streptococcus, and echocardiography demonstrates vegetations on the mitral valve and concurrent rheumatic mitral stenosis changes, indicating valve involvement due to a systemic streptococcal infection classified elsewhere; a code from this group is assigned to capture the endocarditis/valve disorder related to that infection. Typical codes: I39
    • An elderly patient with a known history of chronic rheumatic heart disease being seen in clinic for progressive dyspnea and worsening valvular dysfunction following a recent documented streptococcal pharyngitis; evaluation shows evidence of active valvular inflammation and possible superimposed infective changes requiring hospitalization for IV antibiotics. Because the valve disorder and endocardial involvement are occurring in the setting of a systemic streptococcal infection process classified elsewhere, a code from this group is used to indicate the secondary heart valve/endocardial disease. Typical codes: I39
    • A hospitalized patient with prosthetic valve who develops bacteremia after a dental procedure, with transesophageal echocardiogram revealing vegetations on the prosthetic valve and systemic signs of infection; the condition is recorded as endocardial and valvular involvement in the context of the identified infectious organism classified elsewhere, and a code from this group is assigned to document that complication. Typical codes: I39

    Related Codes

    I30-ACUTE-PERICARDITIS

    ICD-10-CM Code For Acute Pericarditis: Group Overview

    I31-OTHER-DISEASES-OF-PERICARDIUM

    ICD-10-CM Code For Other Diseases Of Pericardium: Group Overview

    I32-PERICARDITIS-IN-DISEASES-CLASSIFIED-ELSEWHERE

    ICD-10-CM Code For Pericarditis In Diseases Classified Elsewhere: Group Overview

    I33-ACUTE-AND-SUBACUTE-ENDOCARDITIS

    ICD-10-CM Code For Acute And Subacute Endocarditis: Group Overview

    I34-NONRHEUMATIC-MITRAL-VALVE-DISORDERS

    ICD-10-CM Code For Nonrheumatic Mitral Valve Disorders: Group Overview

    I35-NONRHEUMATIC-AORTIC-VALVE-DISORDERS

    ICD-10-CM Code For Nonrheumatic Aortic Valve Disorders: Group Overview

    I36-NONRHEUMATIC-TRICUSPID-VALVE-DISORDERS

    ICD-10-CM Code For Nonrheumatic Tricuspid Valve Disorders: Group Overview

    I37-NONRHEUMATIC-PULMONARY-VALVE-DISORDERS

    ICD-10-CM Code For Nonrheumatic Pulmonary Valve Disorders: Group Overview

    I38-ENDOCARDITIS-VALVE-UNSPECIFIED

    ICD-10-CM Code For Endocarditis Valve Unspecified: Group Overview

    I40-ACUTE-MYOCARDITIS

    ICD-10-CM Code For Acute Myocarditis: Group Overview

    Showing 1–10 of 23

    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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