C49.5
BillableMalignant neoplasm of connective and soft tissue of pelvis
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 connective tissues and soft tissues of the pelvis, such as muscles, fat, or fibrous tissue in that region.
Coding Tips
- •Verify the exact anatomical site within the pelvis is documented to ensure accurate coding
- •Confirm malignancy status and obtain histology type when available for complete documentation
Clinical Significance
Malignant neoplasm of connective and soft tissue of the pelvis represents pelvic sarcomas arising from non-organ soft tissue structures. These deep-seated tumors are surgically challenging due to proximity to vital pelvic organs, major vessels, and nerves, often requiring multidisciplinary surgical teams.
Documentation Requirements
- ✓Pathology confirming malignant soft tissue neoplasm within the pelvis
- ✓Distinction from primary pelvic organ malignancies (uterine, bladder, rectal, ovarian)
- ✓Specific pelvic location and relationship to pelvic organs
- ✓Histological subtype and tumor grade
- ✓MRI pelvis showing tumor boundaries and organ involvement
Commonly Confused Codes
C47.5 (Peripheral nerves of pelvis) — nerve-origin pelvic tumorC48.1 (Specified parts of peritoneum) — peritoneal malignancy, not soft tissueC76.3 (Malignant neoplasm of pelvis) — ill-defined pelvic site malignancyC54-C55 (Malignant neoplasm of uterus) — primary uterine malignancy, not pelvic soft tissue
Code Hierarchy
└C49Malignant neoplasm of other connective and soft tissue└C49.5Malignant neoplasm of connective and soft tissue of pelvis
└C49.5Malignant neoplasm of connective and soft tissue of pelvis