ICD-10 · PDGM grouping
C76 Malignant neoplasm of other and ill-defined sites
All 11 codes in the C76 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
9
Cannot lead a claim
2
What CMS assigns to C76
9 of the 11 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases; 2 are assigned no clinical group. None of the 11 is assigned a comorbidity subgroup. 9 of the 11 can lead a claim.
Every code in C76
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 |
|---|---|---|---|---|
| C76.0 | Malignant neoplasm of head, face and neck | Can lead a claim | K | None |
| C76.1 | Malignant neoplasm of thorax | Can lead a claim | K | None |
| C76.2 | Malignant neoplasm of abdomen | Can lead a claim | K | None |
| C76.3 | Malignant neoplasm of pelvis | Can lead a claim | K | None |
| C76.4 Malignant neoplasm of upper limb | ||||
| C76.40 | Malignant neoplasm of unspecified upper limb | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| C76.41 | Malignant neoplasm of right upper limb | Can lead a claim | K | None |
| C76.42 | Malignant neoplasm of left upper limb | Can lead a claim | K | None |
| C76.5 Malignant neoplasm of lower limb | ||||
| C76.50 | Malignant neoplasm of unspecified lower limb | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| C76.51 | Malignant neoplasm of right lower limb | Can lead a claim | K | None |
| C76.52 | Malignant neoplasm of left lower limb | Can lead a claim | K | None |
| C76.8 | Malignant neoplasm of other specified ill-defined sites | 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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