ICD-10 · PDGM grouping
C76-C80 — Malignant neoplasms of ill-defined, other secondary and unspecified sites
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.1.26.
OASIS-E2 v1.00.0 · ingested 2026-04-26
Codes in range
59
No clinical group
14
A period cannot be grouped from these.
Barred as primary
1
CMS rejects these in the primary position.
Where these codes group
43 of the 59 codes in C76-C80 group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases, but the range is not uniform — it spreads across 2 clinical groups. A further 14 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Every code in C76-C80
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| C760 | Malignant neoplasm of head, face and neck | K | Accepted |
| C761 | Malignant neoplasm of thorax | K | Accepted |
| C762 | Malignant neoplasm of abdomen | K | Accepted |
| C763 | Malignant neoplasm of pelvis | K | Accepted |
| C7640 | Malignant neoplasm of unspecified upper limb | None | Cannot group |
| C7641 | Malignant neoplasm of right upper limb | K | Accepted |
| C7642 | Malignant neoplasm of left upper limb | K | Accepted |
| C7650 | Malignant neoplasm of unspecified lower limb | None | Cannot group |
| C7651 | Malignant neoplasm of right lower limb | K | Accepted |
| C7652 | Malignant neoplasm of left lower limb | K | Accepted |
| C768 | Malignant neoplasm of other specified ill-defined sites | K | Accepted |
| C770 | Sec and unsp malig neoplasm of nodes of head, face and neck | K | Accepted |
| C771 | Secondary and unsp malignant neoplasm of intrathorac nodes | K | Accepted |
| C772 | Secondary and unsp malignant neoplasm of intra-abd nodes | K | Accepted |
| C773 | Sec and unsp malig neoplasm of axilla and upper limb nodes | K | Accepted |
| C774 | Sec and unsp malig neoplasm of inguinal and lower limb nodes | K | Accepted |
| C775 | Secondary and unsp malignant neoplasm of intrapelv nodes | K | Accepted |
| C778 | Sec and unsp malig neoplasm of nodes of multiple regions | K | Accepted |
| C779 | Secondary and unsp malignant neoplasm of lymph node, unsp | None | Cannot group |
| C7800 | Secondary malignant neoplasm of unspecified lung | None | Cannot group |
| C7801 | Secondary malignant neoplasm of right lung | K | Accepted |
| C7802 | Secondary malignant neoplasm of left lung | K | Accepted |
| C781 | Secondary malignant neoplasm of mediastinum | K | Accepted |
| C782 | Secondary malignant neoplasm of pleura | K | Accepted |
| C7830 | Secondary malignant neoplasm of unsp respiratory organ | None | Cannot group |
| C7839 | Secondary malignant neoplasm of other respiratory organs | K | Accepted |
| C784 | Secondary malignant neoplasm of small intestine | K | Accepted |
| C785 | Secondary malignant neoplasm of large intestine and rectum | K | Accepted |
| C786 | Secondary malignant neoplasm of retroperiton and peritoneum | K | Accepted |
| C787 | Secondary malig neoplasm of liver and intrahepatic bile duct | K | Accepted |
| C7880 | Secondary malignant neoplasm of unspecified digestive organ | None | Cannot group |
| C7889 | Secondary malignant neoplasm of other digestive organs | K | Accepted |
| C7900 | Secondary malignant neoplasm of unsp kidney and renal pelvis | None | Cannot group |
| C7901 | Secondary malignant neoplasm of r kidney and renal pelvis | K | Accepted |
| C7902 | Secondary malignant neoplasm of left kidney and renal pelvis | K | Accepted |
| C7910 | Secondary malignant neoplasm of unspecified urinary organs | None | Cannot group |
| C7911 | Secondary malignant neoplasm of bladder | K | Accepted |
| C7919 | Secondary malignant neoplasm of other urinary organs | K | Accepted |
| C792 | Secondary malignant neoplasm of skin | K | Accepted |
| C7931 | Secondary malignant neoplasm of brain | B | Accepted |
| C7932 | Secondary malignant neoplasm of cerebral meninges | B | Accepted |
| C7940 | Secondary malignant neoplasm of unsp part of nervous system | None | Cannot group |
| C7949 | Secondary malignant neoplasm of oth parts of nervous system | K | Accepted |
| C7951 | Secondary malignant neoplasm of bone | K | Accepted |
| C7952 | Secondary malignant neoplasm of bone marrow | K | Accepted |
| C7960 | Secondary malignant neoplasm of unspecified ovary | None | Cannot group |
| C7961 | Secondary malignant neoplasm of right ovary | K | Accepted |
| C7962 | Secondary malignant neoplasm of left ovary | K | Accepted |
| C7963 | Secondary malignant neoplasm of bilateral ovaries | K | Accepted |
| C7970 | Secondary malignant neoplasm of unspecified adrenal gland | None | Cannot group |
| C7971 | Secondary malignant neoplasm of right adrenal gland | K | Accepted |
| C7972 | Secondary malignant neoplasm of left adrenal gland | K | Accepted |
| C7981 | Secondary malignant neoplasm of breast | K | Accepted |
| C7982 | Secondary malignant neoplasm of genital organs | K | Accepted |
| C7989 | Secondary malignant neoplasm of other specified sites | K | Accepted |
| C799 | Secondary malignant neoplasm of unspecified site | None | Cannot group |
| C800 | Disseminated malignant neoplasm, unspecified | K | Accepted |
| C801 | Malignant (primary) neoplasm, unspecified | None | Cannot group |
| C802 | Malignant neoplasm associated with transplanted organ | None | Not accepted |
Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. 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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