C79.82 (Secondary malignant neoplasm of genital organs) compared with D07.0 (Carcinoma in situ of endometrium), from the official CMS tabular data. C79.82 and D07.0 name the same anatomical site (corpus) with a different neoplasm behavior. MedCoder-derived
Same anatomical site, different neoplasm behavior.
Same site — secondary malignancy (corpus)
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. D07.0 and C79.82 name the same anatomical site (corpus) 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.
| C79.82Secondary malignant neoplasm of genital organs | D07.0Carcinoma in situ of endometrium | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Secondary malignant neoplasm of genital organs is a billable ICD-10-CM diagnosis code (C79.82). | Carcinoma in situ of endometrium is a billable ICD-10-CM diagnosis code (D07.0). |
| 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