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C33 ICD-10-CM Code: Malignant neoplasm of trachea

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Official description

C33

Malignant neoplasm of trachea

ICD-10-CM diagnosis code · United States clinical modification

Where C33 sits

  1. 1

    Chapter 2

    Neoplasms (C00-D49)

  2. 2

    Section

    Malignant neoplasms of respiratory and intrathoracic organs (C30-C39)

  3. 3

    Category C33

    Malignant neoplasm of trachea

  4. 4

    Code C33

    Malignant neoplasm of trachea

Notes for this code

Inclusion terms

No inclusion terms are listed for C33.

Code first

No “code first” instruction is listed for C33.

Use additional code

  • code to identify:
  • exposure to environmental tobacco smoke (Z77.22)
  • exposure to tobacco smoke in the perinatal period (P96.81)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for C33.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for C33.

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Frequently asked questions

What does ICD-10-CM code C33 mean?

C33 is the FY 2027 U.S. ICD-10-CM code for “Malignant neoplasm of trachea.”

Is C33 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, C33 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is C33 located in ICD-10-CM?

C33 is listed in Chapter 2, Neoplasms (C00-D49), within Malignant neoplasms of respiratory and intrathoracic organs (C30-C39) (C30–C39), under category C33, Malignant neoplasm of trachea.

What coding notes are listed for C33?

No inclusion terms are listed for C33 in this reference record. No code-first instruction is listed. Additional-code instructions: code to identify:; exposure to environmental tobacco smoke (Z77.22); exposure to tobacco smoke in the perinatal period (P96.81); history of tobacco dependence (Z87.891); occupational exposure to environmental tobacco smoke (Z57.31); tobacco dependence (F17.-); tobacco use (Z72.0). No Excludes1 note is listed. No Excludes2 note is listed.