DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

C09 Malignant neoplasm of tonsil

  • Header · not billable

C09 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. C09 Malignant neoplasm of tonsil
Billable codes
4
Subdivisions
4
CC / MCC codes
0 / 0
HCC V28 codes
4
New FY2027
0
Index entries
0

Codes in C09

  1. C09.0
    Malignant neoplasm of tonsillar fossa
    Billable21
  2. C09.1
    Malignant neoplasm of tonsillar pillar (anterior) (posterior)
    Billable21
  3. C09.8
    Malignant neoplasm of overlapping sites of tonsil
    Billable21
  4. C09.9
    Malignant neoplasm of tonsil, unspecified
    Billable21
    Inclusion terms 3

    Inclusion terms

    • Malignant neoplasm of tonsil NOS
    • Malignant neoplasm of faucial tonsils
    • Malignant neoplasm of palatine tonsils

Sources of each column.

Instructions

At C09

Excludes2

  • malignant neoplasm of lingual tonsil (C02.4) C02.4
  • malignant neoplasm of pharyngeal tonsil (C11.1) C11.1

Use additional code

  • code to identify:
  • alcohol abuse and dependence (F10.-) F10
  • exposure to environmental tobacco smoke (Z77.22) Z77.22
  • exposure to tobacco smoke in the perinatal period (P96.81) P96.81
  • history of tobacco dependence (Z87.891) Z87.891
  • occupational exposure to environmental tobacco smoke (Z57.31) Z57.31
  • 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