DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

C7B Secondary neuroendocrine tumors

  • Header · not billable

C7B is not billable. The category heads 8 billable codes in FY2027, grouped under 3 subdivisions.

Index → code

  • Tumorcarcinoidsecondary → C7B.00
  • Tumorsecondarycarcinoid → C7B.00
  • Tumorneuroendocrinesecondary NEC → C7B.8

Where it sits

  1. Chapter 2 Neoplasms (C00-D49)
  2. C7B Secondary neuroendocrine tumors (C7B)
  3. C7B Secondary neuroendocrine tumors
Billable codes
8
Subdivisions
3
CC / MCC codes
6 / 0
HCC V28 codes
8
New FY2027
0
Index entries
19

Codes in C7B

  1. C7B.0
    Secondary carcinoid tumors
    Header
  2. C7B.00
    Secondary carcinoid tumors, unspecified site
    Billable17
  3. C7B.01
    Secondary carcinoid tumors of distant lymph nodes
    BillableCC17
  4. C7B.02
    Secondary carcinoid tumors of liver
    BillableCC17
  5. C7B.03
    Secondary carcinoid tumors of bone
    BillableCC17
  6. C7B.04
    Secondary carcinoid tumors of peritoneum
    BillableCC17
    Inclusion terms 1

    Inclusion terms

    • Mesentery metastasis of carcinoid tumor
  7. C7B.09
    Secondary carcinoid tumors of other sites
    BillableCC17
  8. C7B.1
    Secondary Merkel cell carcinoma
    Billable17
    Inclusion terms 2

    Inclusion terms

    • Merkel cell carcinoma nodal presentation
    • Merkel cell carcinoma visceral metastatic presentation
  9. C7B.8
    Other secondary neuroendocrine tumors
    BillableCC17

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 C7B

Use additional code

  • code to identify any functional activity

Notes that also apply

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

Index entries

  • Tumorcarcinoidsecondary → C7B.00
  • Tumorsecondarycarcinoid → C7B.00
  • Tumorcarcinoidmesentery metastasis → C7B.04
  • Carcinoma (malignant)Merkel cellnodal presentation → C7B.1
  • Carcinoma (malignant)Merkel cellsecondary → C7B.1
  • Carcinoma (malignant)Merkel cellvisceral metastatic → C7B.1
  • Carcinoma (malignant)secondaryMerkel cell → C7B.1
  • Tumorneuroendocrinesecondary NEC → C7B.8
  • Tumorsecondaryneuroendocrine NEC → C7B.8
  • Tumorcarcinoidsecondarydistant lymph nodes → C7B.01
  • Tumorsecondarycarcinoiddistant lymph nodes → C7B.01
  • Tumorcarcinoidsecondaryliver → C7B.02
  • Tumorsecondarycarcinoidliver → C7B.02
  • Tumorcarcinoidsecondarybone → C7B.03
  • Tumorsecondarycarcinoidbone → C7B.03
  • Tumorcarcinoidsecondaryperitoneum → C7B.04
  • Tumorsecondarycarcinoidperitoneum → C7B.04
  • Tumorcarcinoidsecondaryspecified NEC → C7B.09
  • Tumorsecondarycarcinoidspecified NEC → C7B.09

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