DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

C17 Malignant neoplasm of small intestine

  • Header · not billable

C17 is not billable. The category heads 6 billable codes in FY2027: the 6 codes directly below it.

Where it sits

  1. Chapter 2 Neoplasms (C00-D49)
  2. C15-C26 Malignant neoplasms of digestive organs (C15-C26)
  3. C17 Malignant neoplasm of small intestine
Billable codes
6
Subdivisions
6
CC / MCC codes
6 / 0
HCC V28 codes
6
New FY2027
0
Index entries
0

Codes in C17

  1. C17.0
    Malignant neoplasm of duodenum
    BillableCC20
  2. C17.1
    Malignant neoplasm of jejunum
    BillableCC20
  3. C17.2
    Malignant neoplasm of ileum
    BillableCC20
    Excludes1 1

    Excludes1

    • malignant neoplasm of ileocecal valve (C18.0) C18.0
  4. C17.3
    Meckel's diverticulum, malignant
    BillableCC20
    Excludes1 1

    Excludes1

    • Meckel's diverticulum, congenital (Q43.0) Q43.0
  5. C17.8
    Malignant neoplasm of overlapping sites of small intestine
    BillableCC20
  6. C17.9
    Malignant neoplasm of small intestine, unspecified
    BillableCC20

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 C17

Excludes1

  • malignant carcinoid tumors of the small intestine (C7A.01) C7A.01

Notes that also apply

Block C15-C26 instructions (Excludes1 1, Excludes2 1): printed on the block page.

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

Hierarchy