ICD-10 · PDGM grouping
D01 Carcinoma in situ of other and unspecified digestive organs
All 9 codes in the D01 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
9
Can lead a claim
7
Cannot lead a claim
2
What CMS assigns to D01
7 of the 9 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases; 2 are assigned no clinical group. None of the 9 is assigned a comorbidity subgroup. 7 of the 9 can lead a claim.
Every code in D01
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 |
|---|---|---|---|---|
| D01.0 | Carcinoma in situ of colon | Can lead a claim | K | None |
| D01.1 | Carcinoma in situ of rectosigmoid junction | Can lead a claim | K | None |
| D01.2 | Carcinoma in situ of rectum | Can lead a claim | K | None |
| D01.3 | Carcinoma in situ of anus and anal canal | Can lead a claim | K | None |
| D01.4 Carcinoma in situ of other and unspecified parts of intestine | ||||
| D01.40 | Carcinoma in situ of unspecified part of intestine | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| D01.49 | Carcinoma in situ of other parts of intestine | Can lead a claim | K | None |
| D01.5 | Carcinoma in situ of liver, gallbladder and bile ducts | Can lead a claim | K | None |
| D01.7 | Carcinoma in situ of other specified digestive organs | Can lead a claim | K | None |
| D01.9 | Carcinoma in situ of digestive organ, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | 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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