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    OpenPayerBilling CodesDiseases of liverICD-10-CM k73-chronic-hepatitis-not-elsewhere-classified
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    ICD-10-CM Code For Chronic Hepatitis Not Elsewhere Classified: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group K73 includes chronic inflammatory diseases of the liver not classified elsewhere, covering nonviral chronic hepatitis, unspecified chronic hepatitis, and other chronic hepatic inflammatory conditions that do not fit specific etiologic categories. These ICD-10-CM diagnosis codes are used to document chronic hepatic inflammation when a specific cause such as viral hepatitis, autoimmune hepatitis, or toxic liver disease is not identified or when the clinician documents chronic hepatitis without further specification, capturing disease chronicity and organ involvement. Accurate coding within the ICD-10-CM K73 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM K73: Chronic Hepatitis, Not Elsewhere Classified Overview

    The ICD-10-CM K73 group represents chronic inflammatory diseases of the liver not classified elsewhere, including various nonviral and idiopathic chronic hepatitis presentations. These conditions target the hepatic parenchyma and can lead to fibrosis or chronic liver dysfunction. Accurate coding matters for reimbursement because it links documented clinical findings to appropriate diagnosis codes used in billing and claim adjudication.

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    When to Use

    Use a code from this group when a clinician documents chronic hepatitis without specifying a known cause or when the condition does not fit criteria for other more specific hepatitis categories. These codes apply to cases showing chronic liver inflammation or chronic liver disease where documentation lacks an identified etiology.

    ICD-10-CM Codes

    5 rows

    ICD-10-CM CodeDescription
    K73.0Chronic persistent hepatitis, not elsewhere classified
    K73.1Chronic lobular hepatitis, not elsewhere classified
    K73.2Chronic active hepatitis, not elsewhere classified
    K73.8Other chronic hepatitis, not elsewhere classified
    K73.9Chronic hepatitis, unspecified

    DRG Codes

    3 rows

    DRG CodeDescription
    441Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with MCC
    442Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with CC
    443Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis without CC/MCC

    Typical Clinical Scenarios

    • A middle-aged patient with months of progressive fatigue, intermittent right upper quadrant discomfort, mild jaundice on exam, and elevated transaminases on serial labs is evaluated in outpatient hepatology clinic to determine cause of chronic liver inflammation. Viral hepatitis panels are negative, autoimmune serologies are unremarkable, and imaging shows a morphologically normal liver without cirrhosis, supporting a diagnosis of chronic hepatitis not otherwise specified after exclusion of specific etiologies. Typical codes: K73.9
    • An adult with a known autoimmune condition presents for routine follow-up with persistent elevation of liver enzymes and biopsy-proven chronic inflammation consistent with chronic persistent hepatitis, without features of progression to cirrhosis; therapy is being managed medically and monitored long-term. The chronic inflammatory changes localized to the portal tracts without significant fibrosis warrant assignment of a chronic hepatitis code that specifies the histologic pattern. Typical codes: K73.1, K73.2
    • An older patient hospitalized for decompensated liver disease develops superimposed chronic cholestatic features with prolonged pruritus, jaundice, and laboratory cholestasis despite treatment for acute issues; the team documents chronic cholestatic hepatitis as a comorbidity contributing to prolonged recovery. Coding reflects a chronic cholestatic hepatitis diagnosis when chronic biliary-type inflammation is identified as a contributing condition. Typical codes: K73.0, K73.8

    Related Codes

    K70-ALCOHOLIC-LIVER-DISEASE

    ICD-10-CM Code For Alcoholic Liver Disease: Group Overview

    K71-TOXIC-LIVER-DISEASE

    ICD-10-CM Code For Toxic Liver Disease: Group Overview

    K72-HEPATIC-FAILURE-NOT-ELSEWHERE-CLASSIFIED

    ICD-10-CM Code For Hepatic Failure Not Elsewhere Classified: Group Overview

    K74-FIBROSIS-AND-CIRRHOSIS-OF-LIVER

    ICD-10-CM Code For Fibrosis And Cirrhosis Of Liver: Group Overview

    K75-OTHER-INFLAMMATORY-LIVER-DISEASES

    ICD-10-CM Code For Other Inflammatory Liver Diseases: Group Overview

    K76-OTHER-DISEASES-OF-LIVER

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

    K77-LIVER-DISORDERS-IN-DISEASES-CLASSIFIED-ELSEWHERE

    ICD-10-CM Code For Liver Disorders In Diseases Classified Elsewhere: 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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