DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

C04 Malignant neoplasm of floor of mouth

  • Header · not billable

C04 is not billable. The category heads 4 billable codes in FY2027: the 4 codes directly below it.

Where it sits

  1. Chapter 2 Neoplasms (C00-D49)
  2. C00-C14 Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)
  3. C04 Malignant neoplasm of floor of mouth
Billable codes
4
Subdivisions
4
CC / MCC codes
0 / 0
HCC V28 codes
4
New FY2027
0
Index entries
0

Codes in C04

  1. C04.0
    Malignant neoplasm of anterior floor of mouth
    Billable21
    Inclusion terms 1

    Inclusion terms

    • Malignant neoplasm of anterior to the premolar-canine junction
  2. C04.1
    Malignant neoplasm of lateral floor of mouth
    Billable21
  3. C04.8
    Malignant neoplasm of overlapping sites of floor of mouth
    Billable21
  4. C04.9
    Malignant neoplasm of floor of mouth, unspecified
    Billable21

Sources of each column.

Instructions

At C04

Use additional code

  • code to identify:
  • alcohol abuse and dependence (F10.-) F10
  • history of tobacco dependence (Z87.891) Z87.891
  • tobacco dependence (F17.-) F17
  • tobacco use (Z72.0) Z72.0

Notes that also apply

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

Hierarchy