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    v1.0.28
    OpenPayerBilling CodesOther forms of heart diseaseICD-10-CM i30-acute-pericarditis
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    ICD-10-CM Code For Acute Pericarditis: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I30 includes acute pericarditis and related inflammatory pericardial conditions such as pericardial effusion and pericardial tamponade where applicable. These ICD-10-CM diagnosis codes are used to document acute pericardial inflammation, associated complications, and clinical features that affect management and monitoring. Accurate coding within the ICD-10-CM I30 group supports complete clinical documentation and appropriate reimbursement.

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    ICD-10-CM I30: Acute Pericarditis Overview

    The diagnoses in the ICD-10-CM I30 group represent acute inflammation of the pericardium, the fibrous sac surrounding the heart, and related pericardial conditions. These codes target pericardial disease affecting cardiac function and symptoms such as chest pain, pericardial effusion, and friction rub. Accurate coding matters for appropriate clinical documentation and reimbursement because it captures severity, complications, and the need for specific interventions.

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    When to Use

    Use a code from the ICD-10-CM I30 group when a patient is diagnosed with acute pericarditis or an acute pericardial effusion confirmed by clinical evaluation, imaging, or procedural findings. Assign the most specific code available to reflect identified complications or related conditions such as pericardial tamponade.

    ICD-10-CM Codes

    4 rows

    ICD-10-CM CodeDescription
    I30.0Acute nonspecific idiopathic pericarditis
    I30.1Infective pericarditis
    I30.8Other forms of acute pericarditis
    I30.9Acute pericarditis, unspecified

    DRG Codes

    3 rows

    DRG CodeDescription
    314Other Circulatory System Diagnoses with MCC
    315Other Circulatory System Diagnoses with CC
    316Other Circulatory System Diagnoses without CC/MCC

    Typical Clinical Scenarios

    • A previously healthy adult presents to the emergency department with acute, pleuritic chest pain that improves when leaning forward, diffuse ST-segment elevation on ECG, and a small pericardial effusion on echocardiogram; viral prodrome was reported one week earlier. The clinician documents a new-onset inflammatory pericarditis without mention of specific cause after evaluation in the acute setting, so an acute pericarditis code from the group is assigned. Typical codes: I30.0, I30.9
    • An older patient with known systemic autoimmune disease (eg, lupus) develops recurrent chest pain and imaging shows pericardial thickening with constrictive physiology and intermittent exacerbations managed in outpatient rheumatology and cardiology clinics. Because the presentation represents a non-acute or recurrent inflammatory pericardial process related to an underlying systemic condition and not specified as acute hemorrhagic or tuberculous, a nonspecific or other specified pericarditis code from the group is used. Typical codes: I30.1, I30.8
    • A patient hospitalized for acute kidney injury on dialysis develops uremic symptoms with chest pain and diffuse pericardial friction rub, and echocardiography confirms an effusion requiring urgent pericardiocentesis; charting indicates acute uremic pericarditis as a complication of advanced renal failure. In the inpatient setting this acute, secondary inflammatory pericardial process is coded using an acute pericarditis code from the group to capture the pericardial diagnosis as part of the hospitalization. Typical codes: I30.0, I30.9

    Related Codes

    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

    I39-ENDOCARDITIS-AND-HEART-VALVE-DISORDERS

    ICD-10-CM Code For Endocarditis And Heart Valve Disorders In Diseases Classified Elsewhere: 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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