DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

C06 Malignant neoplasm of other and unspecified parts of mouth

  • Header · not billable

C06 is not billable. The category heads 6 billable codes in FY2027, grouped under 5 subdivisions.

Where it sits

  1. Chapter 2 Neoplasms (C00-D49)
  2. C00-C14 Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)
  3. C06 Malignant neoplasm of other and unspecified parts of mouth
Billable codes
6
Subdivisions
5
CC / MCC codes
0 / 0
HCC V28 codes
6
New FY2027
0
Index entries
0

Codes in C06

  1. C06.0
    Malignant neoplasm of cheek mucosa
    Billable21
    Inclusion terms 2

    Inclusion terms

    • Malignant neoplasm of buccal mucosa NOS
    • Malignant neoplasm of internal cheek
  2. C06.1
    Malignant neoplasm of vestibule of mouth
    Billable21
    Inclusion terms 2

    Inclusion terms

    • Malignant neoplasm of buccal sulcus (upper) (lower)
    • Malignant neoplasm of labial sulcus (upper) (lower)
  3. C06.2
    Malignant neoplasm of retromolar area
    Billable21
  4. C06.8
    Malignant neoplasm of overlapping sites of other and unspecified parts of mouth
    Header
  5. C06.80
    Malignant neoplasm of overlapping sites of unspecified parts of mouth
    Billable21
  6. C06.89
    Malignant neoplasm of overlapping sites of other parts of mouth
    Billable21
    Inclusion terms 1

    Inclusion terms

    • 'book leaf' neoplasm [ventral surface of tongue and floor of mouth]
  7. C06.9
    Malignant neoplasm of mouth, unspecified
    Billable21
    Inclusion terms 2

    Inclusion terms

    • Malignant neoplasm of minor salivary gland, unspecified site
    • Malignant neoplasm of oral cavity NOS

Sources of each column.

Instructions

At C06

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