ICD-10 · PDGM grouping
C40-C41 — Malignant neoplasms of bone and articular cartilage
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.2.26.
Codes in range
24
No clinical group
6
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
18 of the 24 codes in C40-C41 group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases. A further 6 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Code families in C40-C41
One page per three-character family: every code in it, whether it can lead a claim, its clinical group and comorbidity subgroup.
Every code in C40-C41
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| C4000 | Malig neoplasm of scapula and long bones of unsp upper limb | None | Cannot lead a claim |
| C4001 | Malig neoplasm of scapula and long bones of right upper limb | K | Can lead a claim |
| C4002 | Malig neoplasm of scapula and long bones of left upper limb | K | Can lead a claim |
| C4010 | Malignant neoplasm of short bones of unspecified upper limb | None | Cannot lead a claim |
| C4011 | Malignant neoplasm of short bones of right upper limb | K | Can lead a claim |
| C4012 | Malignant neoplasm of short bones of left upper limb | K | Can lead a claim |
| C4020 | Malignant neoplasm of long bones of unspecified lower limb | None | Cannot lead a claim |
| C4021 | Malignant neoplasm of long bones of right lower limb | K | Can lead a claim |
| C4022 | Malignant neoplasm of long bones of left lower limb | K | Can lead a claim |
| C4030 | Malignant neoplasm of short bones of unspecified lower limb | None | Cannot lead a claim |
| C4031 | Malignant neoplasm of short bones of right lower limb | K | Can lead a claim |
| C4032 | Malignant neoplasm of short bones of left lower limb | K | Can lead a claim |
| C4080 | Malig neoplm of ovrlp sites of bone/artic cartl of unsp limb | None | Cannot lead a claim |
| C4081 | Malig neoplm of ovrlp sites of bone/artic cartl of r limb | K | Can lead a claim |
| C4082 | Malig neoplm of ovrlp sites of bone/artic cartl of left limb | K | Can lead a claim |
| C4090 | Malig neoplasm of unsp bones and artic cartlg of unsp limb | None | Cannot lead a claim |
| C4091 | Malig neoplasm of unsp bones and artic cartlg of right limb | K | Can lead a claim |
| C4092 | Malig neoplasm of unsp bones and artic cartlg of left limb | K | Can lead a claim |
| C410 | Malignant neoplasm of bones of skull and face | K | Can lead a claim |
| C411 | Malignant neoplasm of mandible | K | Can lead a claim |
| C412 | Malignant neoplasm of vertebral column | K | Can lead a claim |
| C413 | Malignant neoplasm of ribs, sternum and clavicle | K | Can lead a claim |
| C414 | Malignant neoplasm of pelvic bones, sacrum and coccyx | K | Can lead a claim |
| C419 | Malignant neoplasm of bone and articular cartilage, unsp | K | Can lead a claim |
Source: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01. 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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