D33.0 (Benign neoplasm of brain, supratentorial) compared with D43.0 (Neoplasm of uncertain behavior of brain, supratentorial), from the official CMS tabular data. D33.0 and D43.0 name the same anatomical site (basal ganglia) with a different neoplasm behavior. MedCoder-derived
Same anatomical site, different neoplasm behavior.
Same site — uncertain behavior (basal ganglia)
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. D33.0 and D43.0 name the same anatomical site (basal ganglia) 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.
| D33.0Benign neoplasm of brain, supratentorial | D43.0Neoplasm of uncertain behavior of brain, supratentorial | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms | C00-D49 — Neoplasms |
| Definition | Benign neoplasm of brain, supratentorial is a billable ICD-10-CM diagnosis code (D33.0). | Neoplasm of uncertain behavior of brain, supratentorial is a billable ICD-10-CM diagnosis code (D43.0). |
| Includes | Benign neoplasm of cerebral ventricle Benign neoplasm of cerebrum Benign neoplasm of frontal lobe Benign neoplasm of occipital lobe | Neoplasm of uncertain behavior of cerebral ventricle Neoplasm of uncertain behavior of cerebrum Neoplasm of uncertain behavior of frontal lobe Neoplasm of uncertain behavior of occipital lobe |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources