ICD-10 · PDGM grouping
D00 Carcinoma in situ of oral cavity, esophagus and stomach
All 11 codes in the D00 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
11
Can lead a claim
10
Cannot lead a claim
1
What CMS assigns to D00
10 of the 11 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases; 1 is assigned no clinical group. None of the 11 is assigned a comorbidity subgroup. 10 of the 11 can lead a claim.
Every code in D00
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| D00.0 Carcinoma in situ of lip, oral cavity and pharynx | ||||
| D00.00 | Carcinoma in situ of oral cavity, unspecified site | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| D00.01 | Carcinoma in situ of labial mucosa and vermilion border | Can lead a claim | K | None |
| D00.02 | Carcinoma in situ of buccal mucosa | Can lead a claim | K | None |
| D00.03 | Carcinoma in situ of gingiva and edentulous alveolar ridge | Can lead a claim | K | None |
| D00.04 | Carcinoma in situ of soft palate | Can lead a claim | K | None |
| D00.05 | Carcinoma in situ of hard palate | Can lead a claim | K | None |
| D00.06 | Carcinoma in situ of floor of mouth | Can lead a claim | K | None |
| D00.07 | Carcinoma in situ of tongue | Can lead a claim | K | None |
| D00.08 | Carcinoma in situ of pharynx | Can lead a claim | K | None |
| D00.1 | Carcinoma in situ of esophagus | Can lead a claim | K | None |
| D00.2 | Carcinoma in situ of stomach | Can lead a claim | K | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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