DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

C7A Malignant neuroendocrine tumors

  • Header · not billable

C7A is not billable. The category heads 23 billable codes in FY2027, grouped under 3 subdivisions.

Index → code

  • Tumorneuroendocrine → C7A.-
  • Tumorcarcinoidmalignant → C7A.00
  • Tumorneuroendocrinespecified NEC → C7A.8

Where it sits

  1. Chapter 2 Neoplasms (C00-D49)
  2. C7A Malignant neuroendocrine tumors (C7A)
  3. C7A Malignant neuroendocrine tumors
Billable codes
23
Subdivisions
3
CC / MCC codes
23 / 0
HCC V28 codes
23
New FY2027
0
Index entries
28

Codes in C7A

  1. C7A.0
    Malignant carcinoid tumors
    Header
  2. C7A.00
    Malignant carcinoid tumor of unspecified site
    BillableCC21
  3. C7A.01
    Malignant carcinoid tumors of the small intestine
    Header
  4. C7A.010
    Malignant carcinoid tumor of the duodenum
    BillableCC21
  5. C7A.011
    Malignant carcinoid tumor of the jejunum
    BillableCC21
  6. C7A.012
    Malignant carcinoid tumor of the ileum
    BillableCC21
  7. C7A.019
    Malignant carcinoid tumor of the small intestine, unspecified portion
    BillableCC21
  8. C7A.02
    Malignant carcinoid tumors of the appendix, large intestine, and rectum
    Header
  9. C7A.020
    Malignant carcinoid tumor of the appendix
    BillableCC21
  10. C7A.021
    Malignant carcinoid tumor of the cecum
    BillableCC21
  11. C7A.022
    Malignant carcinoid tumor of the ascending colon
    BillableCC21
  12. C7A.023
    Malignant carcinoid tumor of the transverse colon
    BillableCC21
  13. C7A.024
    Malignant carcinoid tumor of the descending colon
    BillableCC21
  14. C7A.025
    Malignant carcinoid tumor of the sigmoid colon
    BillableCC21
  15. C7A.026
    Malignant carcinoid tumor of the rectum
    BillableCC21
  16. C7A.029
    Malignant carcinoid tumor of the large intestine, unspecified portion
    BillableCC21
    Inclusion terms 1

    Inclusion terms

    • Malignant carcinoid tumor of the colon NOS
  17. C7A.09
    Malignant carcinoid tumors of other sites
    Header
  18. C7A.090
    Malignant carcinoid tumor of the bronchus and lung
    BillableCC21
  19. C7A.091
    Malignant carcinoid tumor of the thymus
    BillableCC21
  20. C7A.092
    Malignant carcinoid tumor of the stomach
    BillableCC21
  21. C7A.093
    Malignant carcinoid tumor of the kidney
    BillableCC21
  22. C7A.094
    Malignant carcinoid tumor of the foregut, unspecified
    BillableCC21
  23. C7A.095
    Malignant carcinoid tumor of the midgut, unspecified
    BillableCC21
  24. C7A.096
    Malignant carcinoid tumor of the hindgut, unspecified
    BillableCC21
  25. C7A.098
    Malignant carcinoid tumors of other sites
    BillableCC21
  26. C7A.1
    Malignant poorly differentiated neuroendocrine tumors
    BillableCC21
    Inclusion terms 3

    Inclusion terms

    • Malignant poorly differentiated neuroendocrine tumor NOS
    • Malignant poorly differentiated neuroendocrine carcinoma, any site
    • High grade neuroendocrine carcinoma, any site
  27. C7A.8
    Other malignant neuroendocrine tumors
    BillableCC21

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 C7A

Excludes2

  • malignant pancreatic islet cell tumors (C25.4) C25.4
  • Merkel cell carcinoma (C4A.-) C4A

Use additional code

  • code to identify any associated endocrine syndrome, such as:
  • carcinoid syndrome (E34.00) E34.00

Code also

  • any associated multiple endocrine neoplasia [MEN] syndromes (E31.2-) E31.2

Notes that also apply

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

Index entries

  • Tumorneuroendocrine → C7A.-
  • Tumorcarcinoidmalignant → C7A.00
  • Carcinoma (malignant)neuroendocrinehigh grade, any site → C7A.1
  • Carcinoma (malignant)neuroendocrinepoorly differentiated, any site → C7A.1
  • Tumorneuroendocrinemalignant poorly differentiated → C7A.1
  • Tumorneuroendocrinespecified NEC → C7A.8
  • Tumorcarcinoidmalignantduodenum → C7A.010
  • Tumorcarcinoidmalignantjejunum → C7A.011
  • Tumorcarcinoidmalignantileum → C7A.012
  • Tumorcarcinoidmalignantsmall intestine → C7A.019
  • Tumorcarcinoidmalignantappendix → C7A.020
  • Tumorcarcinoidmalignantcecum → C7A.021
  • Tumorcarcinoidmalignantascending colon → C7A.022
  • Tumorcarcinoidmalignanttransverse colon → C7A.023
  • Tumorcarcinoidmalignantdescending colon → C7A.024
  • Tumorcarcinoidmalignantsigmoid colon → C7A.025
  • Tumorcarcinoidmalignantrectum → C7A.026
  • Tumorcarcinoidmalignantcolon → C7A.029
  • Tumorcarcinoidmalignantlarge intestine → C7A.029
  • Tumorcarcinoidmalignantbronchus (lung) → C7A.090
  • Tumorcarcinoidmalignantlung (bronchus) → C7A.090
  • Tumorcarcinoidmalignantthymus → C7A.091
  • Tumorcarcinoidmalignantstomach → C7A.092
  • Tumorcarcinoidmalignantkidney → C7A.093
  • Tumorcarcinoidmalignantforegut NOS → C7A.094
  • Tumorcarcinoidmalignantmidgut NOS → C7A.095
  • Tumorcarcinoidmalignanthindgut NOS → C7A.096
  • Tumorcarcinoidmalignantspecified NEC → C7A.098

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