D00.01 (Carcinoma in situ of labial mucosa and vermilion border) compared with D37.01 (Neoplasm of uncertain behavior of lip), from the official CMS tabular data. D00.01 and D37.01 name the same anatomical site (commissure) with a different neoplasm behavior.
Same anatomical site, different neoplasm behavior.
Same site — uncertain behavior (commissure)
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. D00.01 and D37.01 name the same anatomical site (commissure) 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.
| D00.01Carcinoma in situ of labial mucosa and vermilion border | D37.01Neoplasm of uncertain behavior of lip | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms | C00-D49 — Neoplasms |
| Definition | Carcinoma in situ of labial mucosa and vermilion border is a billable ICD-10-CM diagnosis code (D00.01). | Neoplasm of uncertain behavior of lip is a billable ICD-10-CM diagnosis code (D37.01). |
| Includes | Bowen's disease erythroplasia grade III intraepithelial neoplasia Queyrat's erythroplasia | Neoplasm of uncertain behavior of vermilion border of lip |
| Use additional code | code to identify: exposure to environmental tobacco smoke (Z77.22) exposure to tobacco smoke in the perinatal period (P96.81) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources