Chronic lobular hepatitis, not elsewhere classified

This code signifies a persistent inflammatory condition affecting the liver lobules, characterized by chronic inflammation and necrosis primarily within the lobules, rather than the portal tracts. It represents a specific form of chronic hepatitis that does not fit into other defined categories.

Assign this code when documentation explicitly states "chronic lobular hepatitis" and specifies that it is not otherwise classified or attributable to known etiologies like viral hepatitis (B, C), autoimmune hepatitis, or drug-induced liver injury. This diagnosis is typically made based on liver biopsy findings.

• Ensure the documentation clearly differentiates this from chronic persistent hepatitis or chronic active hepatitis, which have distinct histological patterns.
• Do not use this code if a more specific cause of chronic hepatitis (e.g., viral, autoimmune, alcoholic) is identified; code the specific etiology instead.
• Look for pathology reports confirming the lobular pattern of inflammation and necrosis.