DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

C13 Malignant neoplasm of hypopharynx

  • Header · not billable

C13 is not billable. The category heads 5 billable codes in FY2027: the 5 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. C13 Malignant neoplasm of hypopharynx
Billable codes
5
Subdivisions
5
CC / MCC codes
0 / 0
HCC V28 codes
5
New FY2027
0
Index entries
0

Codes in C13

  1. C13.0
    Malignant neoplasm of postcricoid region
    Billable21
  2. C13.1
    Malignant neoplasm of aryepiglottic fold, hypopharyngeal aspect
    Billable21
    Inclusion terms 4, Excludes2 1

    Inclusion terms

    • Malignant neoplasm of aryepiglottic fold, marginal zone
    • Malignant neoplasm of aryepiglottic fold NOS
    • Malignant neoplasm of interarytenoid fold, marginal zone
    • Malignant neoplasm of interarytenoid fold NOS

    Excludes2

    • malignant neoplasm of aryepiglottic fold or interarytenoid fold, laryngeal aspect (C32.1) C32.1
  3. C13.2
    Malignant neoplasm of posterior wall of hypopharynx
    Billable21
  4. C13.8
    Malignant neoplasm of overlapping sites of hypopharynx
    Billable21
  5. C13.9
    Malignant neoplasm of hypopharynx, unspecified
    Billable21
    Inclusion terms 1

    Inclusion terms

    • Malignant neoplasm of hypopharyngeal wall NOS

Sources of each column.

Instructions

At C13

Excludes2

  • malignant neoplasm of pyriform sinus (C12) C12

Use additional code

  • code to identify:
  • 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