Echinococcosis, unspecified, of liver

This code signifies an infestation of the liver by tapeworm larvae of the genus Echinococcus, where the specific species of the parasite is not documented. This parasitic infection, also known as hydatid disease, typically manifests as cysts in the liver parenchyma. The "unspecified" nature indicates that the type of echinococcosis (e.g., cystic, alveolar) is not determined.

Use this code when documentation confirms echinococcosis affecting the liver, but the medical record does not specify the particular Echinococcus species (e.g., E. granulosus or E. multilocularis). This code is appropriate for cases where imaging (e.g., ultrasound, CT, MRI) or serology suggests hepatic echinococcosis, but further species-specific identification is pending or not performed.

• Avoid using this code if the specific type of echinococcosis (e.g., cystic, alveolar) is known; instead, use more specific codes within the 122 series.
• Ensure documentation clearly states liver involvement; if other organs are affected, additional codes may be necessary.
• Consider sequencing this code as a primary diagnosis when the echinococcosis is the reason for the encounter or hospitalization.