2021 ICD-10-CM Diagnosis Code K73

Chronic hepatitis, not elsewhere classified

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • K73 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM K73 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of K73 - other international versions of ICD-10 K73 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as K73. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • alcoholic hepatitis (chronic) (
    ICD-10-CM Diagnosis Code K70.1

    Alcoholic hepatitis

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    K70.1-
    )
  • drug-induced hepatitis (chronic) (
    ICD-10-CM Diagnosis Code K71
    • K71 Toxic liver disease
      • K71.0 Toxic liver disease with cholestasis
      • K71.1 Toxic liver disease with hepatic necrosis
        • K71.10 Toxic liver disease with hepatic necrosis, wi...
        • K71.11 Toxic liver disease with hepatic necrosis, wi...
      • K71.2 Toxic liver disease with acute hepatitis
      • K71.3 Toxic liver disease with chronic persistent h...
      • K71.4 Toxic liver disease with chronic lobular hepa...
      • K71.5 Toxic liver disease with chronic active hepat...
        • K71.50 Toxic liver disease with chronic active hepat...
        • K71.51 Toxic liver disease with chronic active hepat...
      • K71.6 Toxic liver disease with hepatitis, not elsew...
      • K71.7 Toxic liver disease with fibrosis and cirrhos...
      • K71.8 Toxic liver disease with other disorders of l...
      • K71.9 Toxic liver disease, unspecified
    K71.-
    )
  • granulomatous hepatitis (chronic) NEC (
    ICD-10-CM Diagnosis Code K75.3

    Granulomatous hepatitis, not elsewhere classified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Type 1 Excludes
    • acute or subacute hepatitis (K72.0-)
    • chronic hepatitis NEC (K73.-)
    • viral hepatitis (B15-B19)
    K75.3
    )
  • reactive, nonspecific hepatitis (chronic) (
    ICD-10-CM Diagnosis Code K75.2

    Nonspecific reactive hepatitis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Type 1 Excludes
    • acute or subacute hepatitis (K72.0-)
    • chronic hepatitis NEC (K73.-)
    • viral hepatitis (B15-B19)
    K75.2
    )
  • viral hepatitis (chronic) (B15-B19
    ICD-10-CM Range B15-B19

    Viral hepatitis

    Type 1 Excludes
    • sequelae of viral hepatitis (B94.2)
    Type 2 Excludes
    • cytomegaloviral hepatitis (B25.1)
    • herpesviral [herpes simplex] hepatitis (B00.81)
    • B15 Acute hepatitis A
    • B16 Acute hepatitis B
    • B17 Other acute viral hepatitis
    • B18 Chronic viral hepatitis
    • B19 Unspecified viral hepatitis
    )
The following code(s) above K73 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to K73:
  • K00-K95
    2021 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the digestive system
  • K70-K77
    2021 ICD-10-CM Range K70-K77

    Diseases of liver

    Type 1 Excludes
    • jaundice NOS (R17)
    Type 2 Excludes
    Diseases of liver
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
Code annotations containing back-references to K73:
  • Type 1 Excludes: K75.2
    , K75.3
    , K75.9
    ICD-10-CM Diagnosis Code K75.2

    Nonspecific reactive hepatitis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Type 1 Excludes
    • acute or subacute hepatitis (K72.0-)
    • chronic hepatitis NEC (K73.-)
    • viral hepatitis (B15-B19)
    ICD-10-CM Diagnosis Code K75.3

    Granulomatous hepatitis, not elsewhere classified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Type 1 Excludes
    • acute or subacute hepatitis (K72.0-)
    • chronic hepatitis NEC (K73.-)
    • viral hepatitis (B15-B19)
    ICD-10-CM Diagnosis Code K75.9

    Inflammatory liver disease, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Hepatitis NOS
    Type 1 Excludes
    • acute or subacute hepatitis (K72.0-)
    • chronic hepatitis NEC (K73.-)
    • viral hepatitis (B15-B19)
ICD-10-CM Codes Adjacent To K73
K72 Hepatic failure, not elsewhere classified
K72.0 Acute and subacute hepatic failure
K72.00 …… without coma
K72.01 …… with coma
K72.1 Chronic hepatic failure
K72.10 …… without coma
K72.11 …… with coma
K72.9 Hepatic failure, unspecified
K72.90 …… without coma
K72.91 …… with coma
K73 Chronic hepatitis, not elsewhere classified
K73.0 Chronic persistent hepatitis, not elsewhere classified
K73.1 Chronic lobular hepatitis, not elsewhere classified
K73.2 Chronic active hepatitis, not elsewhere classified
K73.8 Other chronic hepatitis, not elsewhere classified
K73.9 Chronic hepatitis, unspecified
K74 Fibrosis and cirrhosis of liver
K74.0 Hepatic fibrosis
K74.00 …… unspecified
K74.01 …… early fibrosis
K74.02 …… advanced fibrosis

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.