P35.3 Congenital viral hepatitis

Name of the Condition

• Congenital viral hepatitis
• ICD-10-CM Code: P35.3

Summary

Congenital viral hepatitis refers to liver inflammation caused by viral infections transmitted from mother to fetus during pregnancy or delivery. This condition may present with jaundice, hepatomegaly, or other hepatic manifestations in the newborn. The infection can result from vertical transmission of hepatotropic viruses, leading to acute or chronic liver disease in the infant.

Causes

Congenital viral hepatitis is caused by vertical transmission of hepatitis viruses from an infected mother to the fetus. Common causative agents include hepatitis B virus (HBV) and hepatitis C virus (HCV), though other hepatotropic viruses may also be involved. Transmission can occur transplacentally, during delivery, or postnatally through close contact.

Risk Factors

• Maternal infection with hepatitis B or C during pregnancy
• High maternal viral load
• Lack of maternal vaccination (e.g., for hepatitis B)
• Prolonged rupture of membranes
• Invasive fetal procedures during pregnancy
• Maternal viral shedding at delivery

Symptoms

Symptoms may include jaundice, dark urine, pale stools, hepatomegaly, failure to thrive, or elevated liver enzymes. Some infants may be asymptomatic initially but develop chronic liver disease later. Severe cases can present with coagulopathy or encephalopathy.

Diagnosis

Diagnosis involves maternal history, newborn physical examination, and laboratory testing (e.g., viral serology, PCR, or liver function tests). Prenatal screening or postnatal testing confirms the specific viral etiology. Imaging may assess liver structure and function.

Treatment Options

Treatment depends on the causative virus and severity. For hepatitis B, post-exposure prophylaxis with immunoglobulin and vaccination is standard. Antiviral therapy may be considered for chronic infections. Supportive care includes monitoring liver function and managing complications.

Prognosis and Follow-Up

Prognosis varies by virus and timing of infection. Early intervention improves outcomes, but some infants may develop chronic hepatitis or cirrhosis. Regular follow-up with liver function tests and viral load monitoring is recommended to assess long-term liver health.

Complications

Complications can include chronic hepatitis, cirrhosis, hepatocellular carcinoma, or liver failure. Neonatal cholestasis or coagulopathy may occur in severe cases. Long-term sequelae depend on the virus and treatment response.

Lifestyle & Prevention

Prevention focuses on maternal vaccination (e.g., hepatitis B) and antiviral therapy during pregnancy. Avoiding exposure to infected blood or bodily fluids reduces transmission risk. Breastfeeding is generally safe if the infant receives prophylaxis.

When to Seek Professional Help

Seek medical attention if the newborn shows signs of jaundice, poor feeding, lethargy, or abnormal liver function. Prompt evaluation is critical for early intervention and preventing complications.

Tips for Medical Coders

Document the specific viral etiology (e.g., hepatitis B or C) when available, as this may impact coding and reporting. Ensure maternal infection status and transmission timing are clearly documented. Code P35.3 is specific to congenital viral hepatitis; verify no other codes apply for related conditions.