Autoimmune hepatitis
ICD-10 K75.4 is a billable code used to indicate a diagnosis of autoimmune hepatitis.
Autoimmune hepatitis (AIH) is a chronic inflammatory liver disease characterized by the immune system attacking liver cells, leading to hepatocellular injury and inflammation. Clinically, patients may present with symptoms such as fatigue, jaundice, abdominal discomfort, and elevated liver enzymes. The disease primarily affects women and can occur at any age, although it is most commonly diagnosed in young adults. The liver anatomy involved includes hepatocytes, bile ducts, and portal tracts, which become infiltrated with lymphocytes and plasma cells in AIH. Disease progression can lead to fibrosis, cirrhosis, and ultimately liver failure if left untreated. Diagnostic considerations include serological markers such as antinuclear antibodies (ANA), smooth muscle antibodies (SMA), and liver biopsy findings that reveal interface hepatitis and plasma cell infiltration. Diagnosis often requires exclusion of other liver diseases, making a comprehensive clinical evaluation essential.
Standard ICD-10-CM documentation requirements apply
Various clinical presentations within this specialty area
Follow specialty-specific billing guidelines
Standard ICD-10-CM documentation requirements apply
Various clinical presentations within this specialty area
Follow specialty-specific billing guidelines
K75.4 specifically covers autoimmune hepatitis, which may include variants such as type 1 and type 2 autoimmune hepatitis, characterized by different autoantibody profiles and clinical presentations.
K75.4 should be used when there is clear evidence of autoimmune hepatitis, supported by serological markers and clinical findings, differentiating it from other liver conditions such as viral hepatitis or alcoholic liver disease.
Documentation should include a thorough clinical history, laboratory results indicating autoimmune markers, imaging studies if performed, and any liver biopsy results that confirm the diagnosis.
