C49.3
BillableMalignant neoplasm of connective and soft tissue of thorax
HCC Category Mapping
V28HCC 21 — Breast, Prostate, Colorectal and Other Cancers and Tumors
0.545V24HCC 10 — Lymphoma and Other Cancers
0.675ESRDHCC 10 — Lymphoma and Other Cancers
0.000RxHCCHCC 22 — Cancer, Other Specified Sites
0.000What This Code Means
A malignant (cancerous) tumor that develops in the soft tissues or connective tissues within the chest cavity, such as muscles, fat, or fibrous tissue surrounding the lungs and heart.
Coding Tips
- •This code is for soft tissue sarcomas of the thorax; ensure the tumor is in soft tissue, not in the lungs or heart itself
- •Document the specific location within the thorax (anterior, posterior, mediastinal) if available for clinical clarity
Clinical Significance
Malignant neoplasm of connective and soft tissue of the thorax encompasses chest wall sarcomas, which are rare but aggressive tumors. These can involve the chest wall muscles, fascia, or adipose tissue and may require complex resection with chest wall reconstruction, reflecting significant surgical complexity.
Documentation Requirements
- ✓Pathology confirming malignant soft tissue neoplasm of the thorax
- ✓Histological subtype (liposarcoma, leiomyosarcoma, fibrosarcoma, etc.)
- ✓Exact location within the thorax (anterior chest wall, posterior, lateral)
- ✓Distinction from lung tumors, mediastinal tumors, or pleural tumors
- ✓Imaging showing chest wall soft tissue mass distinct from bony or visceral structures
Excludes 1 — Do NOT code together
Commonly Confused Codes
C47.3 (Peripheral nerves of thorax) — nerve origin, not general soft tissueC34._ (Malignant neoplasm of bronchus and lung) — lung parenchymal cancerC38._ (Malignant neoplasm of heart, mediastinum, and pleura) — different thoracic structuresC41.3 (Malignant neoplasm of ribs, sternum, clavicle) — bone tumors, not soft tissue
Code Hierarchy
└C49Malignant neoplasm of other connective and soft tissue└C49.3Malignant neoplasm of connective and soft tissue of thorax
└C49.3Malignant neoplasm of connective and soft tissue of thorax