B66.0
Opisthorchiasis
Clinical Classification Guidelines
Inclusion Terms
- Infection due to cat liver fluke
- Infection due to Opisthorchis (felineus)(viverrini)
Medical Intelligence & Overview
Opisthorchiasis is a parasitic infection caused by the liver fluke species Opisthorchis felineus and Opisthorchis viverrini. These parasites primarily infect the liver, gall bladder, and bile ducts of humans. The infection is often acquired through consumption of raw or undercooked freshwater fish contaminated with the parasite's larvae. Recognized under the ICD-10 code B66.0, opisthorchiasis is prevalent in regions where eating traditional raw fish dishes is common. While often asymptomatic initially, it can lead to more severe health complications if left untreated.
Causes & Symptoms
Clinical Causes: Eating raw or undercooked freshwater fish contaminated with Opisthorchis larvae. Contaminated water sources that harbor infected fish or copepods (intermediate hosts). Poor sanitation and hygiene practices facilitating the spread of the parasite. Traveling to or residing in endemic areas where the parasite is common.
Key Symptoms: Abdominal pain, especially in the upper right portion near the liver. Digestive issues such as nausea, diarrhea, or indigestion. Jaundice (yellowing of the skin and eyes) in advanced cases. Fatigue and weakness due to ongoing liver inflammation. Fever and chills if secondary bacterial infections develop. Weight loss and loss of appetite. In some cases, asymptomatic with no noticeable signs.
Diagnostic & Treatment
Diagnosis Path: Diagnosis of opisthorchiasis typically involves a combination of medical history, physical examination, and laboratory tests. Parasitological diagnosis is confirmed through:
Treatment Protocols: Treatment focuses on eradicating the parasite and managing symptoms. Common approaches include:
Clinical Advice & FAQs
Billing Guidance
Is B66.0 a billable ICD-10 code?
Yes, B66.0 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report B66.0?
Clinical documentation must specify the nature of Opisthorchiasis and any associated comorbidities for accurate reporting.
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