DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 2

C15-C26 Malignant neoplasms of digestive organs (C15-C26)

Block C15-C26 groups 12 categories with 60 billable codes in FY2027.

Where it sits

  1. Chapter 2 Neoplasms (C00-D49)
  2. C15-C26 Malignant neoplasms of digestive organs (C15-C26)

Neighbouring blocks

Categories
12
Billable codes
60
CC codes
57
MCC codes
0
HCC V28 codes
60
New FY2027
0

Categories in C15-C26

  • C15

    Malignant neoplasm of esophagus

    –

    • 5 billable codes
    • 5 CC
    • 5 with HCC
  • C16

    Malignant neoplasm of stomach

    Leather bottle stomach → C16.9

    • 9 billable codes
    • 9 CC
    • 9 with HCC
  • C17

    Malignant neoplasm of small intestine

    –

    • 6 billable codes
    • 6 CC
    • 6 with HCC
  • C18

    Malignant neoplasm of colon

    Polyposiscolicarcinoma in → C18.9

    • 10 billable codes
    • 10 CC
    • 10 with HCC
  • C19

    Malignant neoplasm of rectosigmoid junction

    –

    • Billable, no subdivisions
    • 1 CC
    • 1 with HCC
  • C20

    Malignant neoplasm of rectum

    –

    • Billable, no subdivisions
    • 1 CC
    • 1 with HCC
  • C21

    Malignant neoplasm of anus and anal canal

    Paget's diseaseextramammaryanus → C21.0

    • 4 billable codes
    • 4 CC
    • 4 with HCC
  • C22

    Malignant neoplasm of liver and intrahepatic bile ducts

    Hepatoblastoma → C22.2

    • 8 billable codes
    • 8 CC
    • 8 with HCC
  • C23

    Malignant neoplasm of gallbladder

    –

    • Billable, no subdivisions
    • 1 CC
    • 1 with HCC
  • C24

    Malignant neoplasm of other and unspecified parts of biliary tract

    Klatskin's tumor → C24.0

    • 4 billable codes
    • 4 CC
    • 4 with HCC
  • C25

    Malignant neoplasm of pancreas

    Gastrinomamalignantpancreas → C25.4

    • 8 billable codes
    • 8 CC
    • 8 with HCC
  • C26

    Malignant neoplasm of other and ill-defined digestive organs

    –

    • 3 billable codes
    • 3 with HCC

Index main terms

  • Carcinoma (malignant) → C16, C18, C21, C22, C25 (18 entries)
  • Tumor → C18, C22, C24, C25 (12 entries)
  • Adenocarcinoma → C16, C18, C22, C25 (9 entries)
  • Cholangiocarcinoma → C22 (3 entries)
  • Cancer → C22 (2 entries)
  • Embryoma → C22 (2 entries)
  • Gastrinoma → C25 (2 entries)
  • Glucagonoma → C25 (2 entries)
  • Hepatoma (malignant) → C22 (2 entries)
  • Insulinoma → C25 (2 entries)
  • Polyposis → C18 (2 entries)
  • Sarcoma (of) → C22 (2 entries)
  • Teratoma (solid) → C22 (2 entries)
  • Angiosarcoma → C22 (1 entry)
  • Cholangiohepatoma → C22 (1 entry)

+10 more main terms; the search box finds them by word.

Block instructions

Excludes1

  • Kaposi's sarcoma of gastrointestinal sites (C46.4) C46.4

Excludes2

  • gastrointestinal stromal tumors (C49.A-) C49.A

Notes that also apply

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