Opisthorchiasis

This code represents an infection caused by liver flukes of the genus Opisthorchis, primarily Opisthorchis viverrini or Opisthorchis felineus. These parasitic flatworms infest the bile ducts of the liver, leading to inflammation and potential obstruction.

Use this code when documentation confirms a diagnosis of opisthorchiasis, typically through microscopic identification of Opisthorchis eggs in stool or duodenal aspirates, or serological testing. It applies to both acute and chronic presentations of the infection.

• Differentiate from other helminthic infections; ensure the documentation specifically names Opisthorchis.
• Code any associated complications, such as cholangitis or cholelithiasis, separately.
• Review documentation for geographic origin, as Opisthorchis infections are endemic to specific regions, particularly Southeast Asia and Eastern Europe.