Benign neoplasm of thymus

This code signifies the presence of a non-cancerous growth originating from the thymus gland. These benign tumors, often thymomas, are typically slow-growing and do not spread to other parts of the body. They may be discovered incidentally or due to symptoms related to compression of surrounding structures.

Apply this code when documentation confirms a benign neoplasm of the thymus, such as a thymoma, lipoma, or cyst. This is appropriate for diagnostic workups, surgical resections, or ongoing management of a confirmed benign thymic mass. Supporting documentation includes pathology reports, imaging studies (CT, MRI), and physician notes explicitly stating a benign thymic tumor.

• Differentiate carefully between benign and malignant thymic neoplasms; malignant thymomas would be coded to the appropriate malignancy category.
• Ensure the documentation specifies the thymus as the primary site of the benign neoplasm.
• Do not use this code for congenital cysts or other non-neoplastic conditions of the thymus.