B77.0 Ascariasis with intestinal complications

Name of the Condition

• Ascariasis with intestinal complications

Summary

Ascariasis with intestinal complications is a parasitic infection caused by Ascaris lumbricoides that results in adverse effects within the gastrointestinal tract. This condition occurs when adult worms in the intestine cause mechanical obstruction, perforation, or other intestinal damage. It is more common in regions with poor sanitation and hygiene, where eggs from contaminated soil or feces are ingested. While many infections are asymptomatic, intestinal complications can lead to severe abdominal pain, vomiting, or bowel obstruction, requiring medical intervention.

Causes

Ascariasis with intestinal complications is caused by the ingestion of Ascaris lumbricoides eggs, which hatch in the intestine and release larvae. These larvae migrate through the lungs and are eventually swallowed, maturing into adult worms in the small intestine. Heavy infestations or abnormal worm migration can lead to intestinal complications, such as blockage or perforation, due to the size and movement of the worms.

Risk Factors

• Living in or traveling to areas with poor sanitation and hygiene.
• Ingesting food or water contaminated with fecal matter.
• Lack of access to clean water or proper waste disposal.
• Occupational exposure, such as working in agriculture or handling soil.
• Children, who are more likely to engage in behaviors like eating dirt or not washing hands.
• Prior ascariasis infection, which may increase the risk of complications with reinfection.

Symptoms

• Severe abdominal pain, cramping, or distension.
• Nausea, vomiting, or regurgitation of undigested food.
• Bowel obstruction symptoms, including constipation or inability to pass gas.
• Visible worms in stool or vomit.
• Unexplained weight loss or malnutrition.
• Fever or signs of intestinal perforation, such as severe pain or shock.

Diagnosis

Diagnosis is typically based on clinical presentation, patient history, and laboratory tests. Stool samples may be examined for Ascaris eggs or worms. Imaging studies, such as X-rays or ultrasound, can detect intestinal obstruction or worm clusters. Blood tests may show eosinophilia, a marker of parasitic infection. In cases of suspected complications, endoscopy or surgical exploration may be necessary to confirm the diagnosis.

Treatment Options

Treatment focuses on eliminating the worms and managing complications. Anthelmintic medications, such as albendazole or mebendazole, are used to kill adult worms. For intestinal obstruction, hospitalization may be required, with possible surgical intervention to remove worms or repair damage. Supportive care, including hydration and pain management, is provided as needed.

Prognosis and Follow-Up

With prompt treatment, most patients recover fully. However, severe complications like intestinal perforation can increase mortality risk. Follow-up may include repeat stool tests to confirm worm clearance and monitoring for recurrence. In endemic areas, prevention measures are recommended to avoid reinfection.

Complications

• Intestinal obstruction or blockage.
• Bowel perforation or peritonitis.
• Malnutrition or vitamin deficiencies.
• Biliary tract obstruction (rare).
• Severe abdominal infection requiring surgery.

Lifestyle & Prevention

• Practice good hand hygiene, especially before eating or handling food.
• Avoid consuming raw vegetables or fruits grown in contaminated soil.
• Ensure access to clean water and proper waste disposal.
• Cook food thoroughly, especially in areas with poor sanitation.
• Wear shoes to prevent contact with contaminated soil.

When to Seek Professional Help

Seek medical attention if you experience severe abdominal pain, vomiting, or signs of bowel obstruction. Immediate care is necessary for symptoms like fever, shock, or visible worms in stool or vomit, as these may indicate serious complications.

Tips for Medical Coders

Use code B77.0 for ascariasis with intestinal complications. Document the presence of intestinal complications, such as obstruction or perforation, to support the code. Include details about diagnostic tests, imaging, or surgical interventions if performed. Ensure the code aligns with clinical findings and avoids use for uncomplicated ascariasis.