ICD-10 · PDGM grouping
C46 Kaposi's sarcoma
All 10 codes in the C46 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
10
Can lead a claim
8
Cannot lead a claim
2
What CMS assigns to C46
8 of the 10 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases; 2 are assigned no clinical group. 9 of the 10 count toward the Kaposi’s Sarcoma comorbidity subgroup; 1 is assigned none. 8 of the 10 can lead a claim. CMS attaches a code-first note to all 10.
- Kaposi’s Sarcoma
Code first
CMS grouper convention 4, on all 10 codes. Code first:
- associated AIDS (B20)
Every code in C46
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 |
|---|---|---|---|---|
| C46.0 | Kaposi's sarcoma of skin | Can lead a claim, code first applies | K | Kaposi’s Sarcoma |
| C46.1 | Kaposi's sarcoma of soft tissue | Can lead a claim, code first applies | K | Kaposi’s Sarcoma |
| C46.2 | Kaposi's sarcoma of palate | Can lead a claim, code first applies | K | Kaposi’s Sarcoma |
| C46.3 | Kaposi's sarcoma of lymph nodes | Can lead a claim, code first applies | K | Kaposi’s Sarcoma |
| C46.4 | Kaposi's sarcoma of gastrointestinal sites | Can lead a claim, code first applies | K | Kaposi’s Sarcoma |
| C46.5 Kaposi's sarcoma of lung | ||||
| C46.50 | Kaposi's sarcoma of unspecified lung | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| C46.51 | Kaposi's sarcoma of right lung | Can lead a claim, code first applies | K | Kaposi’s Sarcoma |
| C46.52 | Kaposi's sarcoma of left lung | Can lead a claim, code first applies | K | Kaposi’s Sarcoma |
| C46.7 | Kaposi's sarcoma of other sites | Can lead a claim, code first applies | K | Kaposi’s Sarcoma |
| C46.9 | Kaposi's sarcoma, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | Kaposi’s Sarcoma |
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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