Kaposi's sarcoma, lung

This code represents Kaposi's sarcoma (KS) specifically affecting the lung tissue. KS is a multifocal vascular tumor, often associated with human herpesvirus 8 (HHV-8) infection, and in the lung, it can manifest as nodules, infiltrates, or pleural effusions. Pulmonary involvement typically indicates advanced or disseminated disease, particularly in immunocompromised individuals.

Use this code when documentation clearly indicates a diagnosis of Kaposi's sarcoma with confirmed involvement of the lung. This diagnosis is often established through biopsy, imaging (e.g., CT scan showing characteristic lesions), and clinical context, especially in patients with HIV/AIDS or other immunosuppressive conditions.

• Always confirm the specific site of Kaposi's sarcoma; this code is exclusively for lung involvement.
• Code the underlying cause of immunosuppression (e.g., HIV infection) as a primary diagnosis when applicable, following sequencing guidelines.
• Distinguish from other pulmonary malignancies or infections that may present similarly.