K74.3
Primary biliary cirrhosis
Clinical Classification Guidelines
Inclusion Terms
- Chronic nonsuppurative destructive cholangitis
- Primary biliary cholangitis
Excludes Type 2
- primary sclerosing cholangitis (K83.01)
Medical Intelligence & Overview
Primary biliary cirrhosis (PBC), also known as primary biliary cholangitis, is a chronic liver disease where the bile ducts within the liver become slowly destroyed. As these ducts are essential for carrying bile—a fluid necessary for digestion of fats—their damage can lead to the buildup of bile in the liver, resulting in liver scarring and potential liver failure over time. Recognized under the ICD-10 code K74.3, PBC is a condition mostly affecting women aged 30 to 60, though it can occur in others as well. Understanding its causes, symptoms, and treatment options can help manage the disease more effectively.
Causes & Symptoms
Clinical Causes: Autoimmune response where the immune system mistakenly attacks the small bile ducts in the liver. Genetic predisposition, with a higher likelihood in individuals with a family history of autoimmune diseases. Environmental factors such as exposure to certain chemicals or toxins that may trigger immune reactions. Other autoimmune conditions, including thyroid disease or scleroderma, which can be associated with PBC.
Key Symptoms: Fatigue that often persists despite rest. Itching (pruritus), sometimes severe and worsening at night. Jaundice, which causes yellowing of the skin and eyes. Dry eyes and mouth (sicca symptoms). Abdominal pain or discomfort in the upper right side. Swelling in the legs and ankles (edema). Darkening of the skin and skin pigmentation changes. Elevated cholesterol levels. Symptoms related to advanced liver damage, such as easy bruising or bleeding, and fluid accumulation in the abdomen (ascites).
Diagnostic & Treatment
Diagnosis Path: Diagnosing primary biliary cirrhosis involves a combination of blood tests, imaging, and biopsy. Blood tests often show elevated levels of liver enzymes, especially alkaline phosphatase, and the presence of specific antibodies like anti-mitochondrial antibodies (AMA), which are highly indicative of PBC. Imaging techniques like ultrasound or MRI can assess liver structure and rule out other liver conditions. A liver biopsy may be performed to confirm the extent of liver damage and fibrosis.
Treatment Protocols: While there is no cure for PBC, several treatments aim to slow disease progression and manage symptoms. Medications include:
Clinical Advice & FAQs
Billing Guidance
Is K74.3 a billable ICD-10 code?
Yes, K74.3 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report K74.3?
Clinical documentation must specify the nature of Primary biliary cirrhosis and any associated comorbidities for accurate reporting.
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