C76.1 (Malignant neoplasm of thorax) compared with D36.7 (Benign neoplasm of other specified sites), from the official CMS tabular data. C76.1 and D36.7 name the same anatomical site (axilla) with a different neoplasm behavior. MedCoder-derived
Same anatomical site, different neoplasm behavior.
Same site — benign neoplasm (axilla)
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. C76.1 and D36.7 name the same anatomical site (axilla) 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.
| C76.1Malignant neoplasm of thorax | D36.7Benign neoplasm of other specified sites | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Malignant neoplasm of thorax is a billable ICD-10-CM diagnosis code (C76.1). | Benign neoplasm of other specified sites is a billable ICD-10-CM diagnosis code (D36.7). |
| Includes | Intrathoracic malignant neoplasm NOS Malignant neoplasm of axilla NOS Thoracic malignant neoplasm NOS | Benign neoplasm of back NOS Benign neoplasm of nose NOS |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources