D00.0 vs D04.0
D00.0 (Carcinoma in situ of lip, oral cavity and pharynx) compared with D04.0 (Carcinoma in situ of skin of lip), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. D00.0 carries an Excludes1 note covering D04.0: “carcinoma in situ of skin of lip (D03.0, D04.0)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| D00.0Carcinoma in situ of lip, oral cavity and pharynx | D04.0Carcinoma in situ of skin of lip | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Carcinoma in situ of lip, oral cavity and pharynx is a non-billable ICD-10-CM category code (D00.0). | Carcinoma in situ of skin of lip is a billable ICD-10-CM diagnosis code (D04.0). |
| Includes | Bowen's disease erythroplasia grade III intraepithelial neoplasia Queyrat's erythroplasia | Bowen's disease erythroplasia grade III intraepithelial neoplasia Queyrat's erythroplasia |
| 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