C67.9 (Malignant neoplasm of bladder, unspecified) compared with D41.4 (Neoplasm of uncertain behavior of bladder), from the official CMS tabular data. C67.9 and D41.4 name the same anatomical site (bladder) with a different neoplasm behavior.
Same anatomical site, different neoplasm behavior.
Same site — uncertain behavior (bladder)
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. C67.9 and D41.4 name the same anatomical site (bladder) 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.
| C67.9Malignant neoplasm of bladder, unspecified | D41.4Neoplasm of uncertain behavior of bladder | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Malignant neoplasm of bladder, unspecified is a billable ICD-10-CM diagnosis code (C67.9). | Neoplasm of uncertain behavior of bladder is a billable ICD-10-CM diagnosis code (D41.4). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources