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C78

⚠ Non-billable (Header)

Secondary malignant neoplasm of respiratory and digestive organs

Neoplasms (C00-D49)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

direct

Cannot be coded with C78

  • • secondary carcinoid tumors of liver (C7B.02)
  • • secondary carcinoid tumors of peritoneum (C7B.04)

⚠️ Excludes2

direct

May be coded together if both conditions coexist

  • • lymph node metastases (C77.0)

Child Codes (9)

C78.0Secondary malignant neoplasm of lungC78.1Secondary malignant neoplasm of mediastinumC78.2Secondary malignant neoplasm of pleuraC78.3Secondary malignant neoplasm of other and unspecified respiratory organsC78.4Secondary malignant neoplasm of small intestineC78.5Secondary malignant neoplasm of large intestine and rectumC78.6Secondary malignant neoplasm of retroperitoneum and peritoneumC78.7Secondary malignant neoplasm of liver and intrahepatic bile ductC78.8Secondary malignant neoplasm of other and unspecified digestive organs

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Code Information

CodeC78
BillableNo — Header code
CategoryNeoplasms (C00-D49)
Excludes12 rule(s)
Excludes21 note(s)
Child codes9

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)