ICD-10 · PDGM grouping
C96 Other and unspecified malignant neoplasms of lymphoid, hematopoietic and related tissue
All 11 codes in the C96 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
11
Cannot lead a claim
0
What CMS assigns to C96
All 11 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases. All 11 count toward the Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia comorbidity subgroup. Every code can lead a claim.
- Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia
Every code in C96
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 |
|---|---|---|---|---|
| C96.0 | Multifocal and multisystemic (disseminated) Langerhans-cell histiocytosisCMS: Multifocal and multisystemic Langerhans-cell histiocytosis | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C96.2 Malignant mast cell neoplasm | ||||
| C96.20 | Malignant mast cell neoplasm, unspecified | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C96.21 | Aggressive systemic mastocytosis | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C96.22 | Mast cell sarcoma | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C96.29 | Other malignant mast cell neoplasm | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C96.4 | Sarcoma of dendritic cells (accessory cells) | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C96.5 | Multifocal and unisystemic Langerhans-cell histiocytosis | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C96.6 | Unifocal Langerhans-cell histiocytosis | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C96.A | Histiocytic sarcoma | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C96.Z | Other specified malignant neoplasms of lymphoid, hematopoietic and related tissueCMS: Oth malig neoplm of lymphoid, hematpoetc and related tissue | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C96.9 | Malignant neoplasm of lymphoid, hematopoietic and related tissue, unspecifiedCMS: Malig neoplm of lymphoid, hematpoetc and rel tissue, unsp | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
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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