2026 ICD-10-CM Diagnosis Code K73Chronic hepatitis, not elsewhere classified
K73 is a non-billable ICD-10-CM category code for chronic hepatitis, not elsewhere classified, so it cannot be submitted on claims. Use a more specific code from this category instead, such as K73.0, K73.1, K73.2, and K73.8.
Code Identity
Code Classification
Specific Coding for Chronic hepatitis, not elsewhere classifiedOverview
Non-specific codes like K73 require more characters. Use one of these billable codes instead:
Use K73.0 for Chronic persistent hepatitis, not elsewhere classified
Use K73.1 for Chronic lobular hepatitis, not elsewhere classified
Use K73.2 for Chronic active hepatitis, not elsewhere classified
Use K73.8 for Other chronic hepatitis, not elsewhere classified
Use K73.9 for Chronic hepatitis, unspecified
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Use Additional Code
- code, if applicable, for ascites R18.8
Type 1 Excludes
- alcoholic hepatitis chronic K70.1
- drug-induced hepatitis chronic K71
- granulomatous hepatitis chronic NEC K75.3
- reactive, nonspecific hepatitis chronic K75.2
- viral hepatitis chronic B15 B19
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.
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.
Patient EducationClinical
Hepatitis
Hepatitis is inflammation of the liver. Inflammation is swelling that happens when tissues of the body are injured or infected. It can damage your liver. This swelling and damage can affect how well your liver functions.
The full article covers:
- What is hepatitis?
- What causes hepatitis?
- How is viral hepatitis spread?
- Who is at risk for hepatitis?
- What are the symptoms of hepatitis?
- What other problems can hepatitis cause?
- How is hepatitis diagnosed?
- What are the treatments for hepatitis?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code HistoryHistory
Questions About K73Overview
Is K73 (Chronic hepatitis, not elsewhere classified) a billable code?
No. This is a category header that groups the codes for chronic hepatitis, not elsewhere classified, and headers cannot be submitted on claims. Claims for chronic hepatitis, not elsewhere classified need a more specific code from this category, such as K73.0, K73.1, and K73.2.
