ICD-10 Code C57.10 – Malignant neoplasm of unspecified broad ligament (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C57.10 – Malignant neoplasm of unspecified broad ligament
What it is
C57.10 identifies a malignant tumor in the broad ligament when the exact side is not documented. Use it for a primary cancer diagnosis involving this female pelvic support structure.
Clinical signs
Clinical features vary; refer to documentation. Patients may have a pelvic mass, pain, bloating, or findings on imaging or surgery that support a malignant broad ligament tumor.
When to use this code
Use this code when the provider documents malignant neoplasm of the broad ligament without specifying right or left. It also fits pathology or operative reports that confirm malignancy in that site. If the record names a more specific adnexal or uterine location, check documentation before assigning C57.10.
Do not use for
Do not use it for benign broad ligament lesions, uncertain masses, or tumors documented in a different pelvic organ. If the site is coded elsewhere or the laterality is specified, choose the documented code instead.
Coding tip
Verify the exact anatomic site in the operative note, pathology report, or final diagnosis before selecting an unspecified broad ligament code.