C76.4 (Malignant neoplasm of upper limb) compared with D04.6 (Carcinoma in situ of skin of upper limb, including shoulder), from the official CMS tabular data. C76.4 and D04.6 name the same anatomical site (antecubital fossa or space) with a different neoplasm behavior. MedCoder-derived
Same anatomical site, different neoplasm behavior.
Same site — carcinoma in situ (antecubital fossa or space)
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. C76.4 and D04.6 name the same anatomical site (antecubital fossa or space) 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.
| C76.4Malignant neoplasm of upper limb | D04.6Carcinoma in situ of skin of upper limb, including shoulder | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Malignant neoplasm of upper limb is a non-billable ICD-10-CM category code (C76.4). | Carcinoma in situ of skin of upper limb, including shoulder is a non-billable ICD-10-CM category code (D04.6). |
| Includes | — | Bowen's disease erythroplasia grade III intraepithelial neoplasia Queyrat's erythroplasia |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources