Chronic hepatitis, not elsewhere classified (K73) ICD-10-CM
The K73 code range covers chronic hepatitis, not elsewhere classified with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
- code, if applicable, for ascites R18.8
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the K73 Range 6 codes · 5 billable
- K73 Chronic hepatitis, not elsewhere classifiedNon-billable
- 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
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the K73 range.
Hepatitis, Chronic
INFLAMMATION of the LIVER with ongoing hepatocellular injury for 6 months or more, characterized by NECROSIS of HEPATOCYTES and inflammatory cell (LEUKOCYTES) infiltration. Chronic hepatitis can be caused by viruses, medications, autoimmune diseases, and other unknown factors.
Hepatitis, Chronic Active
An aggressive form of chronic hepatitis involving extensive liver damage and cell injury beyond the portal tract.
Hepatitis, Chronic Persistent
A mild form of chronic hepatitis causing limited damage to the liver.
About the K73 Code Range
Chronic hepatitis is lasting liver inflammation with ongoing injury to liver cells. K73 groups forms not classified elsewhere.
The subdivisions distinguish chronic persistent hepatitis (K73.0), chronic lobular hepatitis (K73.1), and chronic active hepatitis (K73.2). They also include other chronic hepatitis (K73.8) and unspecified chronic hepatitis (K73.9).
Questions About This Page
How many billable codes are in the K73 range?
Of the 6 codes in this range, 5 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the K73 range classify?
The range classifies chronic hepatitis, not elsewhere classified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
