C79.19 (Secondary malignant neoplasm of other urinary organs) compared with D41.2 (Neoplasm of uncertain behavior of ureter), from the official CMS tabular data. C79.19 and D41.2 name the same anatomical site (ureter) with a different neoplasm behavior. MedCoder-derived
Same anatomical site, different neoplasm behavior.
Same site — uncertain behavior (ureter)
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. C79.19 and D41.2 name the same anatomical site (ureter) 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.
| C79.19Secondary malignant neoplasm of other urinary organs | D41.2Neoplasm of uncertain behavior of ureter | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | C00-D49 — Neoplasms | C00-D49 — Neoplasms |
| Definition | Secondary malignant neoplasm of other urinary organs is a billable ICD-10-CM diagnosis code (C79.19). | Neoplasm of uncertain behavior of ureter is a non-billable ICD-10-CM category code (D41.2). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources