C54.0 (Malignant neoplasm of isthmus uteri) compared with D07.0 (Carcinoma in situ of endometrium), from the official CMS tabular data. C54.0 and D07.0 name the same anatomical site (corpus) with a different neoplasm behavior. MedCoder-derived
Same anatomical site, different neoplasm behavior.
Same site — carcinoma in situ (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. C54.0 and D07.0 name the same anatomical site (corpus) 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.
| C54.0Malignant neoplasm of isthmus uteri | D07.0Carcinoma in situ of endometrium | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms | C00-D49 — Neoplasms |
| Definition | Malignant neoplasm of isthmus uteri is a billable ICD-10-CM diagnosis code (C54.0). | Carcinoma in situ of endometrium is a billable ICD-10-CM diagnosis code (D07.0). |
| Includes | malignant neoplasm of skin of female genital organs Malignant neoplasm of lower uterine segment | 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