DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

C78 Secondary malignant neoplasm of respiratory and digestive organs

  • Header · not billable

C78 is not billable. The category heads 15 billable codes in FY2027, grouped under 9 subdivisions.

FY2027 changes under C78: 2 billable codes added. All FY2027 changes.

Index → code

  • Pseudomyxoma peritonei → C78.6
  • Carcinomatosisperitonei → C78.6
Billable codes
15
Subdivisions
9
CC / MCC codes
15 / 0
HCC V28 codes
13
New FY2027
2
Index entries
2

Codes in C78

  1. C78.0
    Secondary malignant neoplasm of lung
    Header
  2. C78.00
    Secondary malignant neoplasm of unspecified lung
    BillableCC17
  3. C78.01
    Secondary malignant neoplasm of right lung
    BillableCC17
  4. C78.02
    Secondary malignant neoplasm of left lung
    BillableCC17
  5. C78.1
    Secondary malignant neoplasm of mediastinum
    BillableCC17
  6. C78.2
    Secondary malignant neoplasm of pleura
    BillableCC17
  7. C78.3
    Secondary malignant neoplasm of other and unspecified respiratory organs
    Header
  8. C78.30
    Secondary malignant neoplasm of unspecified respiratory organ
    BillableCC17
  9. C78.31
    Secondary malignant neoplasm of larynx New FY2027
    BillableCC
  10. C78.32
    Secondary malignant neoplasm of pharynx New FY2027
    BillableCC
  11. C78.39
    Secondary malignant neoplasm of other respiratory organs
    BillableCC17
  12. C78.4
    Secondary malignant neoplasm of small intestine
    BillableCC17
  13. C78.5
    Secondary malignant neoplasm of large intestine and rectum
    BillableCC17
  14. C78.6
    Secondary malignant neoplasm of retroperitoneum and peritoneum
    BillableCC17
  15. C78.7
    Secondary malignant neoplasm of liver and intrahepatic bile duct
    BillableCC17
  16. C78.8
    Secondary malignant neoplasm of other and unspecified digestive organs
    Header
  17. C78.80
    Secondary malignant neoplasm of unspecified digestive organ
    BillableCC17
  18. C78.89
    Secondary malignant neoplasm of other digestive organs
    BillableCC17
    Code also 1

    Code also

    • exocrine pancreatic insufficiency (K86.81) K86.81

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At C78

Excludes1

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

Excludes2

  • lymph node metastases (C77.0) C77.0

Notes that also apply

Chapter 2 instructions (Notes 8): printed on the chapter 2 page.

Index entries

  • Pseudomyxoma peritonei → C78.6
  • Carcinomatosisperitonei → C78.6

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy