ICD-10 · PDGM grouping
D09 Carcinoma in situ of other and unspecified sites
All 9 codes in the D09 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
6
Cannot lead a claim
3
What CMS assigns to D09
6 of the 9 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases; 3 are assigned no clinical group. None of the 9 is assigned a comorbidity subgroup. 6 of the 9 can lead a claim.
Every code in D09
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 |
|---|---|---|---|---|
| D09.0 | Carcinoma in situ of bladder | Can lead a claim | K | None |
| D09.1 Carcinoma in situ of other and unspecified urinary organs | ||||
| D09.10 | Carcinoma in situ of unspecified urinary organ | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| D09.19 | Carcinoma in situ of other urinary organs | Can lead a claim | K | None |
| D09.2 Carcinoma in situ of eye | ||||
| D09.20 | Carcinoma in situ of unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| D09.21 | Carcinoma in situ of right eye | Can lead a claim | K | None |
| D09.22 | Carcinoma in situ of left eye | Can lead a claim | K | None |
| D09.3 | Carcinoma in situ of thyroid and other endocrine glands | Can lead a claim | K | None |
| D09.8 | Carcinoma in situ of other specified sites | Can lead a claim | K | None |
| D09.9 | Carcinoma in situ, 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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