B83.0
Visceral larva migrans
Clinical Classification Guidelines
Inclusion Terms
- Toxocariasis
Medical Intelligence & Overview
Visceral larva migrans (VLM) is a parasitic infection caused by the larvae of Toxocara species, mainly Toxocara canis and Toxocara cati. These parasites are commonly found in dogs and cats, and infection occurs when humans accidentally ingest eggs from contaminated soil, food, or contact with infected animals. Once inside the human body, the larvae migrate through tissues, leading to various symptoms and potential complications. This condition is classified under ICD-10 code B83.0 and is often referred to as toxocariasis.
Causes & Symptoms
Clinical Causes: Ingestion of eggs from contaminated soil, such as soil contaminated with dog or cat feces Consuming unwashed fruits and vegetables that have been in contact with contaminated soil Hand-to-mouth contact after touching contaminated surfaces or environments Direct contact with infected animals, especially puppies and kittens Poor hygiene practices that facilitate accidental ingestion of eggs
Key Symptoms: Fever and general malaise Abdominal pain and discomfort Respiratory symptoms like cough, wheezing, or shortness of breath Enlargement of liver or spleen (hepatosplenomegaly) Skin manifestations such as rashes, itching, or swelling Eosinophilia – an increased number of eosinophils in the blood Irregular or recurring symptoms depending on the extent of tissue migration In some cases, neurological symptoms if larvae invade the eye or central nervous system
Diagnostic & Treatment
Diagnosis Path: Diagnosing visceral larva migrans often involves a combination of clinical evaluation and laboratory tests. Blood tests such as complete blood count (CBC) may reveal eosinophilia. Serologic tests, including enzyme-linked immunosorbent assay (ELISA), can detect antibodies against Toxocara. Imaging studies like ultrasound, X-rays, or MRI may be used to assess organ involvement, especially in cases with suspected tissue migration or organ enlargement. A detailed history of exposure to potentially contaminated environments and animals is also essential.
Treatment Protocols: Treatment generally involves antiparasitic medications such as albendazole or thiabendazole to eliminate the larvae. Corticosteroids may be prescribed to reduce inflammation in severe cases or when there is significant tissue damage. Managing symptoms and preventing complications involve supportive care, including antihistamines for allergic reactions and managing organ-specific issues. Preventative measures focus on maintaining good hygiene, washing hands thoroughly, cooking food properly, and controlling infections in pets to reduce the risk of transmission.
Clinical Advice & FAQs
Billing Guidance
Is B83.0 a billable ICD-10 code?
Yes, B83.0 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report B83.0?
Clinical documentation must specify the nature of Visceral larva migrans and any associated comorbidities for accurate reporting.
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