Other benign neoplasm of connective and other soft tissue of thorax

This code represents a non-cancerous growth originating from the connective tissues (e.g., fat, fibrous tissue, muscle, cartilage) or other soft tissues within the thoracic region, excluding the heart, lungs, and major blood vessels. These benign neoplasms are typically slow-growing and do not metastasize. Examples include lipomas, fibromas, or benign nerve sheath tumors located in the chest wall, mediastinum, or diaphragm.

Use this code when documentation confirms a benign neoplasm of connective or other soft tissue located in the thorax, and a more specific code for the exact tissue type or location is not available within the ICD-9-CM system. This code is appropriate for conditions such as a benign fibrous histiocytoma of the chest wall or a lipoma of the mediastinum, following diagnostic workup (e.g., imaging, biopsy) confirming its benign nature.

• Ensure the neoplasm is explicitly documented as benign and located within the thorax.
• Differentiate from malignant neoplasms of the same tissue type or location, which would require codes from the 170-171 series.
• Avoid using this code if a more specific ICD-9-CM code exists for the exact benign neoplasm type (e.g., specific benign lipoma codes).