C76.2 (Malignant neoplasm of abdomen) compared with C79.8 (Secondary malignant neoplasm of other specified sites), from the official CMS tabular data. C76.2 and C79.8 name the same anatomical site (abdomen) with a different neoplasm behavior. MedCoder-derived
Same anatomical site, different neoplasm behavior.
Same site — secondary malignancy (abdomen)
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. C76.2 and C79.8 name the same anatomical site (abdomen) 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.
| C76.2Malignant neoplasm of abdomen | C79.8Secondary malignant neoplasm of other specified sites | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | C00-D49 — Neoplasms | C00-D49 — Neoplasms |
| Definition | Malignant neoplasm of abdomen is a billable ICD-10-CM diagnosis code (C76.2). | Secondary malignant neoplasm of other specified sites is a non-billable ICD-10-CM category code (C79.8). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources