D30.0 (Benign neoplasm of kidney) compared with D41.0 (Neoplasm of uncertain behavior of kidney), from the official CMS tabular data. D30.0 and D41.0 name the same anatomical site (kidney) with a different neoplasm behavior.
Same anatomical site, different neoplasm behavior.
Same site — uncertain behavior (kidney)
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. D30.0 and D41.0 name the same anatomical site (kidney) 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.
| D30.0Benign neoplasm of kidney | D41.0Neoplasm of uncertain behavior of kidney | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Benign neoplasm of kidney is a non-billable ICD-10-CM category code (D30.0). | Neoplasm of uncertain behavior of kidney is a non-billable ICD-10-CM category code (D41.0). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources