C77.0 (Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck) compared with D36.0 (Benign neoplasm of lymph nodes), from the official CMS tabular data. C77.0 and D36.0 name the same anatomical site (lymph) with a different neoplasm behavior. MedCoder-derived
Same anatomical site, different neoplasm behavior.
Same site — benign neoplasm (lymph)
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. C77.0 and D36.0 name the same anatomical site (lymph) 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.
| C77.0Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck | D36.0Benign neoplasm of lymph nodes | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck is a billable ICD-10-CM diagnosis code (C77.0). | Benign neoplasm of lymph nodes is a billable ICD-10-CM diagnosis code (D36.0). |
| Includes | Secondary and unspecified malignant neoplasm of supraclavicular lymph nodes | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources