D30.4 (Benign neoplasm of urethra) compared with D41.3 (Neoplasm of uncertain behavior of urethra), from the official CMS tabular data. D30.4 and D41.3 name the same anatomical site (bulbourethral gland) with a different neoplasm behavior.
Same anatomical site, different neoplasm behavior.
Same site — uncertain behavior (bulbourethral gland)
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. D30.4 and D41.3 name the same anatomical site (bulbourethral gland) 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.
| D30.4Benign neoplasm of urethra | D41.3Neoplasm of uncertain behavior of urethra | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Benign neoplasm of urethra is a billable ICD-10-CM diagnosis code (D30.4). | Neoplasm of uncertain behavior of urethra is a billable ICD-10-CM diagnosis code (D41.3). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources