Benign lipomatous neoplasm of intrathoracic organs

This code identifies a non-cancerous fatty tumor originating within organs located inside the chest cavity. These benign growths are composed of mature adipose tissue and are typically slow-growing and asymptomatic unless they impinge on surrounding structures.

Use this code when diagnostic imaging (e.g., CT, MRI) or pathological examination confirms a benign lipoma located within intrathoracic organs such as the mediastinum, lung, or pleura. Documentation should clearly state the benign nature and the specific intrathoracic location of the lipomatous neoplasm.

• Ensure documentation explicitly states "benign" to differentiate from malignant or uncertain behavior neoplasms.
• Specify the exact intrathoracic organ involved if possible, although this code covers general intrathoracic locations.
• Do not confuse with lipomas of the chest wall or subcutaneous tissue, which are coded differently.