C57.1 (Malignant neoplasm of broad ligament) compared with D28.2 (Benign neoplasm of uterine tubes and ligaments), from the official CMS tabular data. C57.1 and D28.2 name the same anatomical site (broad ligament) with a different neoplasm behavior. MedCoder-derived
Same anatomical site, different neoplasm behavior.
Same site — benign neoplasm (broad ligament)
The behavior documented for the site — malignant primary, secondary, carcinoma in situ, benign, uncertain or unspecified — decides which column of the neoplasm table, and therefore which code, applies.
Source: CMS Table of Neoplasms
Same site, different neoplasm behavior. C57.1 and D28.2 name the same anatomical site (broad ligament) with a different neoplasm behavior.
From the CMS/CDC Table of Neoplasms: the behavior documented for that site — malignant primary, secondary, carcinoma in situ, benign, uncertain or unspecified — decides which column, and therefore which code, applies.
| C57.1Malignant neoplasm of broad ligament | D28.2Benign neoplasm of uterine tubes and ligaments | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Malignant neoplasm of broad ligament is a non-billable ICD-10-CM category code (C57.1). | Benign neoplasm of uterine tubes and ligaments is a billable ICD-10-CM diagnosis code (D28.2). |
| Includes | malignant neoplasm of skin of female genital organs | adenomatous polyp benign neoplasm of skin of female genital organs benign teratoma Benign neoplasm of fallopian tube |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources