C79.7 (Secondary malignant neoplasm of adrenal gland) compared with D35.0 (Benign neoplasm of adrenal gland), from the official CMS tabular data. C79.7 and D35.0 name the same anatomical site (adrenal) with a different neoplasm behavior. MedCoder-derived
Same anatomical site, different neoplasm behavior.
Same site — benign neoplasm (adrenal)
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. C79.7 and D35.0 name the same anatomical site (adrenal) 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.
| C79.7Secondary malignant neoplasm of adrenal gland | D35.0Benign neoplasm of adrenal gland | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | C00-D49 — Neoplasms | C00-D49 — Neoplasms |
| Definition | Secondary malignant neoplasm of adrenal gland is a non-billable ICD-10-CM category code (C79.7). | Benign neoplasm of adrenal gland is a non-billable ICD-10-CM category code (D35.0). |
| Use additional code | — | code to identify any functional activity |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources