122.1
ICD-9-CMThis code represents a parasitic infection of the lung caused by the larval stage of the tapeworm Echinococcus granulosus, commonly known as hydatid disease or cystic echinococcosis. The infection typically manifests as one or more hydatid cysts within the pulmonary parenchyma, which can grow and cause respiratory symptoms.
Use this code when documentation confirms a diagnosis of pulmonary hydatid disease due to Echinococcus granulosus. This diagnosis is often supported by imaging studies (e.g., chest X-ray, CT scan showing characteristic cysts), serological tests, and sometimes histological confirmation from biopsy or surgical excision.
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