C77.5 (Secondary and unspecified malignant neoplasm of intrapelvic lymph nodes) compared with D36.0 (Benign neoplasm of lymph nodes), from the official CMS tabular data. C77.5 and D36.0 name the same anatomical site (lymph) with a different neoplasm behavior.
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. C77.5 and D36.0 name the same anatomical site (lymph) with a different neoplasm behavior.
From the CMS 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.
| C77.5Secondary and unspecified malignant neoplasm of intrapelvic lymph nodes | 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 intrapelvic lymph nodes is a billable ICD-10-CM diagnosis code (C77.5). | Benign neoplasm of lymph nodes is a billable ICD-10-CM diagnosis code (D36.0). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources