ICD-10-CM category
C78: Secondary malignant neoplasm of respiratory and digestive organs
Codes under C78 (Secondary malignant neoplasm of respiratory and digestive organs). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| C78.0 | Secondary malignant neoplasm of lung | — |
| C78.00 | Secondary malignant neoplasm of unspecified lung | ✓ |
| C78.01 | Secondary malignant neoplasm of right lung | ✓ |
| C78.1 | Secondary malignant neoplasm of mediastinum | ✓ |
| C78.02 | Secondary malignant neoplasm of left lung | ✓ |
| C78.2 | Secondary malignant neoplasm of pleura | ✓ |
| C78.3 | Secondary malignant neoplasm of other and unspecified respiratory organs | — |
| C78.4 | Secondary malignant neoplasm of small intestine | ✓ |
| C78.5 | Secondary malignant neoplasm of large intestine and rectum | ✓ |
| C78.6 | Secondary malignant neoplasm of retroperitoneum and peritoneum | ✓ |
| C78.7 | Secondary malignant neoplasm of liver and intrahepatic bile duct | ✓ |
| C78.8 | Secondary malignant neoplasm of other and unspecified digestive organs | — |
| C78.30 | Secondary malignant neoplasm of unspecified respiratory organ | ✓ |
| C78.39 | Secondary malignant neoplasm of other respiratory organs | ✓ |
| C78.80 | Secondary malignant neoplasm of unspecified digestive organ | ✓ |
| C78.89 | Secondary malignant neoplasm of other digestive organs | ✓ |
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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