ICD-10 Code K73 – Chronic hepatitis, not elsewhere classified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K73 – Chronic hepatitis, not elsewhere classified
What it is
K73 identifies chronic hepatitis that is not classified under a more specific type. Use it when the record documents ongoing liver inflammation, but the cause or subtype is not clearly stated.
Clinical signs
Clinical features vary; refer to documentation. Common charted findings may include persistent liver inflammation, abnormal liver tests, fatigue, or hepatomegaly, but you should code only what is supported in the record.
When to use this code
Use K73 when the provider documents chronic hepatitis without naming a specific etiology such as viral, autoimmune, or drug-induced disease. It also fits cases where the note states chronic hepatitis and no further classification is available. If the cause is clarified elsewhere, code the more specific diagnosis instead.
Do not use for
Do not use K73 for acute hepatitis or for chronic hepatitis with a documented specific cause that has its own code. Check documentation if the chart identifies cirrhosis, viral hepatitis, or another defined liver disorder.
Coding tip
Look for the provider’s stated cause first; if none is documented, K73 is the appropriate unspecified chronic hepatitis option.