Benign neoplasm of mediastinum

This code signifies a non-cancerous growth originating within the mediastinum, the central compartment of the thoracic cavity. These benign neoplasms can arise from various tissues, including thymic, neural, or mesenchymal elements, and are typically slow-growing and non-invasive.

Assign this code when documentation confirms a benign tumor located within the mediastinum, such as a benign thymoma, neurofibroma, or lipoma. Supporting documentation includes pathology reports confirming benign histology, imaging studies (CT, MRI) identifying a mediastinal mass with benign characteristics, and physician notes detailing the diagnosis.

• Differentiate from malignant mediastinal neoplasms (C38.x) based on pathology.
• If the specific type of benign mediastinal neoplasm is known and has a more specific code (e.g., D15.0 for benign neoplasm of thymus), use that more granular code.
• Ensure the documentation clearly states "benign" to avoid miscoding as a neoplasm of uncertain behavior or malignant.