ICD-10-CM Section · C76-C80
Malignant neoplasms of ill-defined, other secondary and unspecified sites
77 codes in this section
77
Total Codes
59
Billable
18
Header (Non-Billable)
5
Top-Level Codes
About Section C76-C80
Section C76-C80 (C76-C80) covers malignant neoplasms of ill-defined, other secondary and unspecified sites. It sits within the Neoplasms chapter (C00-D49). This section contains 77 ICD-10-CM codes, 59 billable diagnoses you can submit on a claim, and 18 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in C76-C80
Grouped by 3-character root code. Click any code for full detail.
C76
Malignant neoplasm of other and ill-defined sites
13 subcodes
| C76.0 | Malignant neoplasm of head, face and neck | Billable |
| C76.1 | Malignant neoplasm of thorax | Billable |
| C76.2 | Malignant neoplasm of abdomen | Billable |
| C76.3 | Malignant neoplasm of pelvis | Billable |
| C76.4 | Malignant neoplasm of upper limb | Header |
| C76.40 | Malignant neoplasm of unspecified upper limb | Billable |
| C76.41 | Malignant neoplasm of right upper limb | Billable |
| C76.42 | Malignant neoplasm of left upper limb | Billable |
| C76.5 | Malignant neoplasm of lower limb | Header |
| C76.50 | Malignant neoplasm of unspecified lower limb | Billable |
| C76.51 | Malignant neoplasm of right lower limb | Billable |
| C76.52 | Malignant neoplasm of left lower limb | Billable |
| C76.8 | Malignant neoplasm of other specified ill-defined sites | Billable |
C77
Secondary and unspecified malignant neoplasm of lymph nodes
8 subcodes
| C77.0 | Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck | Billable |
| C77.1 | Secondary and unspecified malignant neoplasm of intrathoracic lymph nodes | Billable |
| C77.2 | Secondary and unspecified malignant neoplasm of intra-abdominal lymph nodes | Billable |
| C77.3 | Secondary and unspecified malignant neoplasm of axilla and upper limb lymph nodes | Billable |
| C77.4 | Secondary and unspecified malignant neoplasm of inguinal and lower limb lymph nodes | Billable |
| C77.5 | Secondary and unspecified malignant neoplasm of intrapelvic lymph nodes | Billable |
| C77.8 | Secondary and unspecified malignant neoplasm of lymph nodes of multiple regions | Billable |
| C77.9 | Secondary and unspecified malignant neoplasm of lymph node, unspecified | Billable |
C78
Secondary malignant neoplasm of respiratory and digestive organs
16 subcodes
| C78.0 | Secondary malignant neoplasm of lung | Header |
| C78.00 | Secondary malignant neoplasm of unspecified lung | Billable |
| C78.01 | Secondary malignant neoplasm of right lung | Billable |
| C78.02 | Secondary malignant neoplasm of left lung | Billable |
| C78.1 | Secondary malignant neoplasm of mediastinum | Billable |
| C78.2 | Secondary malignant neoplasm of pleura | Billable |
| C78.3 | Secondary malignant neoplasm of other and unspecified respiratory organs | Header |
| C78.30 | Secondary malignant neoplasm of unspecified respiratory organ | Billable |
| C78.39 | Secondary malignant neoplasm of other respiratory organs | Billable |
| C78.4 | Secondary malignant neoplasm of small intestine | Billable |
| C78.5 | Secondary malignant neoplasm of large intestine and rectum | Billable |
| C78.6 | Secondary malignant neoplasm of retroperitoneum and peritoneum | Billable |
| C78.7 | Secondary malignant neoplasm of liver and intrahepatic bile duct | Billable |
| C78.8 | Secondary malignant neoplasm of other and unspecified digestive organs | Header |
| C78.80 | Secondary malignant neoplasm of unspecified digestive organ | Billable |
| C78.89 | Secondary malignant neoplasm of other digestive organs | Billable |
C79
Secondary malignant neoplasm of other and unspecified sites
32 subcodes
| C79.0 | Secondary malignant neoplasm of kidney and renal pelvis | Header |
| C79.00 | Secondary malignant neoplasm of unspecified kidney and renal pelvis | Billable |
| C79.01 | Secondary malignant neoplasm of right kidney and renal pelvis | Billable |
| C79.02 | Secondary malignant neoplasm of left kidney and renal pelvis | Billable |
| C79.1 | Secondary malignant neoplasm of bladder and other and unspecified urinary organs | Header |
| C79.10 | Secondary malignant neoplasm of unspecified urinary organs | Billable |
| C79.11 | Secondary malignant neoplasm of bladder | Billable |
| C79.19 | Secondary malignant neoplasm of other urinary organs | Billable |
| C79.2 | Secondary malignant neoplasm of skin | Billable |
| C79.3 | Secondary malignant neoplasm of brain and cerebral meninges | Header |
| C79.31 | Secondary malignant neoplasm of brain | Billable |
| C79.32 | Secondary malignant neoplasm of cerebral meninges | Billable |
| C79.4 | Secondary malignant neoplasm of other and unspecified parts of nervous system | Header |
| C79.40 | Secondary malignant neoplasm of unspecified part of nervous system | Billable |
| C79.49 | Secondary malignant neoplasm of other parts of nervous system | Billable |
| C79.5 | Secondary malignant neoplasm of bone and bone marrow | Header |
| C79.51 | Secondary malignant neoplasm of bone | Billable |
| C79.52 | Secondary malignant neoplasm of bone marrow | Billable |
| C79.6 | Secondary malignant neoplasm of ovary | Header |
| C79.60 | Secondary malignant neoplasm of unspecified ovary | Billable |
| C79.61 | Secondary malignant neoplasm of right ovary | Billable |
| C79.62 | Secondary malignant neoplasm of left ovary | Billable |
| C79.63 | Secondary malignant neoplasm of bilateral ovaries | Billable |
| C79.7 | Secondary malignant neoplasm of adrenal gland | Header |
| C79.70 | Secondary malignant neoplasm of unspecified adrenal gland | Billable |
| C79.71 | Secondary malignant neoplasm of right adrenal gland | Billable |
| C79.72 | Secondary malignant neoplasm of left adrenal gland | Billable |
| C79.8 | Secondary malignant neoplasm of other specified sites | Header |
| C79.81 | Secondary malignant neoplasm of breast | Billable |
| C79.82 | Secondary malignant neoplasm of genital organs | Billable |
| C79.89 | Secondary malignant neoplasm of other specified sites | Billable |
| C79.9 | Secondary malignant neoplasm of unspecified site | Billable |
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Verified against the CMS 2026 code set on May 31, 2026.
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