C57.10
BillableMalignant neoplasm of unspecified broad ligament
HCC Category Mapping
V28HCC 22 — Colorectal, Bladder, and Other Cancers
0.000V24HCC 10 — Lymphoma and Other Cancers
0.675ESRDHCC 10 — Lymphoma and Other Cancers
0.000RxHCCHCC 22 — Cancer, Other Specified Sites
0.000What This Code Means
Cancer of the broad ligament, a membrane structure that supports the uterus and fallopian tubes, when the specific side is not identified.
Coding Tips
Clinical Significance
Broad ligament malignancies are rare gynecologic cancers that arise from the peritoneal fold connecting the uterus to the pelvic wall. These tumors are significant because they can mimic ovarian or tubal pathology, making accurate site identification critical for staging and treatment planning. Unspecified laterality reduces coding precision and may trigger audits in risk adjustment.
Documentation Requirements
- ✓Pathology or biopsy report confirming malignancy of the broad ligament
- ✓Laterality (right or left) — query provider if not documented
- ✓Histologic type (sarcoma, carcinoma, or other)
- ✓Staging information (FIGO or TNM)
- ✓Whether tumor is primary or metastatic spread from uterus/ovary
- ✓Current treatment status (active treatment, surveillance, or history)
Commonly Confused Codes
C57.11/C57.12 — Laterality-specific broad ligament codes; use these instead when right or left is documentedC56.1/C56.2 — Ovarian cancer; broad ligament tumors may present similarly but arise from a different anatomical structureC57.4 — Uterine adnexa unspecified; use C57.10-12 when broad ligament is specifically identifiedD28.2 — Benign neoplasm of broad ligament; ensure pathology confirms malignancy before coding C57