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 2026, 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
About the K73 Code Range
The ICD-10 code section K73 covers types of chronic hepatitis that are not classified elsewhere, helping healthcare professionals identify long-term liver inflammation when it does not fit into other specific categories. These codes are essential for accurately diagnosing and documenting chronic liver conditions that persist over time.
This section includes several subcodes for more precise classification: K73.0 is used for chronic persistent hepatitis, indicating ongoing mild liver inflammation; K73.1 refers to chronic lobular hepatitis, involving inflammation focused in the liver lobules; and K73.2 denotes chronic active hepatitis, a more aggressive form with active liver damage. The code K73.8 is for other chronic hepatitis, such as lymphocytic portal hepatitis, while K73.9 is for unspecified or recurrent chronic hepatitis conditions, including those presenting with growth or developmental concerns. These distinctions assist medical coders in selecting the most accurate ICD-10 code for varied presentations of chronic hepatitis not caused by infectious agents.
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, 2025 through September 30, 2026. 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 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
