2024 ICD-10-CM Diagnosis Code C33

Malignant neoplasm of trachea

ICD-10-CM Code:
ICD-10 Code for:
Malignant neoplasm of trachea
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Code Navigator:

Code Classification

  • Neoplasms
    • Malignant neoplasms of respiratory and intrathoracic organs
      • Malignant neoplasm of trachea

C33 is a billable diagnosis code used to specify a medical diagnosis of malignant neoplasm of trachea. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

The following anatomical sites found in the Table of Neoplasms reference this diagnosis code given the correct histological behavior: Neoplasm, neoplastic cartilage (articular) (joint) NEC [See Also: Neoplasm, bone] trachea or Neoplasm, neoplastic trachea (cartilage) (mucosa) or Neoplasm, neoplastic windpipe .

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Acinar cell carcinoma of trachea
  • Adenocarcinoma of trachea
  • Adenoid cystic carcinoma of trachea
  • Adenosquamous carcinoma of trachea
  • Basaloid squamous cell carcinoma of trachea
  • Clear cell adenocarcinoma of trachea
  • Clear cell squamous cell carcinoma of trachea
  • Giant cell carcinoma of trachea
  • Lymphoepithelial carcinoma of trachea
  • Malignant neoplasm of carina of bronchus
  • Malignant neoplasm of cartilage of trachea
  • Malignant neoplasm of mucosa of trachea
  • Malignant tumor of trachea
  • Mucinous adenocarcinoma of trachea
  • Mucinous cystadenocarcinoma of trachea
  • Myoepithelial carcinoma
  • Myoepithelial carcinoma
  • Myoepithelial carcinoma of trachea
  • Neoplasm of carina
  • Neoplasm of lower respiratory tract and mediastinum
  • Papillary adenocarcinoma of trachea
  • Papillary squamous cell carcinoma of trachea
  • Primary acantholytic squamous cell carcinoma
  • Primary acinar cell carcinoma of trachea
  • Primary adenocarcinoma of trachea
  • Primary adenoid cystic carcinoma of trachea
  • Primary adenosquamous carcinoma of trachea
  • Primary adenosquamous cell carcinoma
  • Primary basaloid squamous cell carcinoma of trachea
  • Primary clear cell adenocarcinoma of trachea
  • Primary clear cell squamous cell carcinoma of trachea
  • Primary giant cell carcinoma of trachea
  • Primary lymphoepithelial carcinoma
  • Primary lymphoepithelial carcinoma of trachea
  • Primary malignant epithelial neoplasm of trachea
  • Primary malignant neoplasm of carina
  • Primary malignant neoplasm of trachea
  • Primary mucinous adenocarcinoma of trachea
  • Primary mucinous cystadenocarcinoma of trachea
  • Primary mucoepidermoid carcinoma of trachea
  • Primary myoepithelial carcinoma of trachea
  • Primary papillary adenocarcinoma of trachea
  • Primary papillary squamous cell carcinoma of trachea
  • Primary salivary gland type carcinoma of trachea
  • Primary signet ring cell carcinoma of trachea
  • Primary solid carcinoma of trachea
  • Primary spindle cell carcinoma of trachea
  • Primary spindle cell squamous cell carcinoma
  • Primary squamous cell adenoid carcinoma of trachea
  • Primary squamous cell carcinoma of trachea
  • Primary undifferentiated carcinoma of trachea
  • Primary verrucous carcinoma of trachea
  • Primary verrucous squamous cell carcinoma
  • Signet ring cell carcinoma of trachea
  • Solid carcinoma of trachea
  • Spindle cell carcinoma of trachea
  • Squamous cell adenoid carcinoma of trachea
  • Squamous cell carcinoma of trachea
  • Undifferentiated carcinoma of trachea
  • Verrucous carcinoma of trachea

Clinical Classification

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.

Use Additional Code

Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an 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

Convert C33 to ICD-9-CM

  • ICD-9-CM Code: 162.0 - Malignant neo trachea

Table of Neoplasms

This code is referenced in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

Neoplasm, neoplastic Malignant
CaInSitu Benign Uncertain
»Neoplasm, neoplastic
  »cartilage (articular) (joint) NEC [See Also: Neoplasm, bone]
»Neoplasm, neoplastic
  »trachea (cartilage) (mucosa)
»Neoplasm, neoplastic

Patient Education

Head and Neck Cancer

What is head and neck cancer?

Head and neck cancer is the name for cancers that develop in the mouth, nose and sinuses, salivary glands, and throat and voice box (larynx). Most head and neck cancers are squamous cell cancers. They begin in the moist tissues that line the head and neck. The cancer cells may spread into deeper tissue as the cancer grows.

There are other cancers that develop in the head and neck, such as brain cancer, eye cancer, and esophageal cancer. But they are usually not considered to be head and neck cancers, because those types of cancer and their treatments are different.

Who is more likely to develop head and neck cancer?

Anyone can get head and neck cancer, but you are more likely to develop it if you:

  • Use tobacco or drink lots of alcohol. Your risk of developing head and neck cancer is even higher if you do both.
  • Are male.
  • Are over age 50.
  • Have a history of head or neck cancer.
  • Have HPV (for cancers in the tonsils and base of the tongue).
  • Are exposed to wood dusts or certain other toxic substances at work (for upper throat, nose, and sinus cancers).
  • Have had radiation exposure to the head and neck (for salivary gland cancer).
  • Have Epstein-Barr virus (EBV) infection (for upper throat and salivary gland cancers).
  • Are Asian (for upper throat cancer).

What are the symptoms of head and neck cancer?

The symptoms of head and neck cancer may include:

  • A lump in the neck
  • A sore in the mouth or the throat that does not heal and may be painful
  • A sore throat that does not go away
  • Trouble swallowing
  • A change or hoarseness in the voice

Other possible symptoms can depend on the specific type of head and neck cancer.

How is head and neck cancer diagnosed?

Which exams and tests used to diagnose head and neck cancer can depend on the specific type of cancer. Possible exams and tests may include:

  • A physical exam of the area that might have cancer.
  • Blood and/or urine tests.
  • An endoscopy.
  • A biopsy or other procedure to collect cells from the area that might have cancer. The cells are viewed under a microscope to find out if they are abnormal.
  • Imaging tests.

What are the treatments for head and neck cancer?

The treatment for head and neck cancer will depend on the specific type of cancer, the stage (how advanced the cancer is), your overall health, and other factors. The treatment options might include:

  • Surgery
  • Radiation therapy
  • Chemotherapy
  • Cancer immunotherapy
  • Targeted therapy, which uses drugs or other substances that mainly attack specific cancer cells and cause less harm to normal cells

In some cases, you may need a combination of treatments. Sometimes surgery can affect how well you can chew, swallow, or talk. Rehabilitation, such as physical therapy, dietary counseling, and speech therapy, may help.

Can head and neck cancer be prevented?

There are steps you can take to help prevent head and neck cancer:

  • Not smoking
  • Limiting alcohol use or not drinking at all
  • Getting regular dental exams
  • Talking to your provider about HPV vaccination

NIH: National Cancer Institute

[Learn More in MedlinePlus]

Tracheal Disorders

Your trachea, or windpipe, is one part of your airway system. Airways are pipes that carry oxygen-rich air to your lungs. They also carry carbon dioxide, a waste gas, out of your lungs.

When you inhale, air travels from your nose, through your larynx, and down your windpipe. The windpipe splits into two bronchi that enter your lungs.

Problems with the trachea include narrowing, inflammation, and some inherited conditions. You may need a procedure called a tracheostomy to help you breathe if you have swallowing problems, or have conditions that affect coughing or block your airways. You might also need a tracheostomy if you are in critical care and need to be on a breathing machine.

NIH: National Heart, Lung, and Blood Institute

[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.


[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.