D00 ICD-10-CM Code: Carcinoma in situ of oral cavity, esophagus and stomach
D00 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools
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FY 2026 Apr update / Neoplasms (C00-D49) / In situ neoplasms (D00-D09)
D00
Header CodeICD-10-CMOfficial ICD-10-CMCodebook guidanceCarcinoma in situ of oral cavity, esophagus and stomach
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialNo inclusion terms are included in this display for D00. Check the code and parent instructions in the Code Book.
Excludes 2
OfficialNo Excludes 2 notes are included in this display for D00. Check the code and parent instructions in the Code Book.
Related Codes
Includes
Official- Bowen's diseaseInherited from D00-D09
- erythroplasiaInherited from D00-D09
- grade III intraepithelial neoplasiaInherited from D00-D09
- Queyrat's erythroplasiaInherited from D00-D09
Excludes 1
Official- melanoma in situ (D03.-)
Code First
OfficialNo Code First sequencing instructions are included in this display for D00. Check the code and parent instructions in the Code Book.
Use Additional
OfficialNo Use Additional Code instructions are included in this display for D00. Check the code and parent instructions in the Code Book.
Code Also
OfficialNo Code Also instructions are included in this display for D00. Check the code and parent instructions in the Code Book.
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
- Code
- D00
- Description
- Carcinoma in situ of oral cavity, esophagus and stomach
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- No
- Payment year
- 2026
Coder workflow notes
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What This Code Means
D00 is the ICD-10-CM diagnosis code for carcinoma in situ of oral cavity, esophagus and stomach. D00 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering in situ neoplasms (d00-d09).
Header codes like D00 cannot be reported on claims directly; they organize child codes that share clinical context. Coders should select the billable child code that matches the documented presentation and then verify its current source-backed HCC mapping. Do not infer a child code or risk adjustment value from the header alone.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for D00 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Excludes 1, Do NOT code together
- melanoma in situ (D03.-)