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    v1.0.28
    OpenPayerBilling CodesMalignant neoplasms of respiratory and intrathoracic organsICD-10-CM c33-malignant-neoplasm-of-trachea
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    ICD-10-CM Code For Malignant Neoplasm Of Trachea: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group C33 includes malignant tumors originating in the trachea, covering primary tracheal carcinomas and similar neoplastic lesions of the tracheal airway. These ICD-10-CM diagnosis codes are used to document clinical presentations involving tumor location, extent, airway obstruction, and any associated metastasis or local invasion. Accurate coding within the ICD-10-CM C33 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM C33: Malignant Neoplasm Of Trachea Overview

    The malignant neoplasm of trachea group represents primary cancers originating in the tracheal airway. These diagnoses affect the respiratory and intrathoracic organs and can impact breathing and airway patency. Accurate coding ensures the clinical severity and site are communicated for reimbursement and longitudinal care tracking.

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    When to Use

    Use a code from this group when a diagnosis documents a primary malignant tumor of the trachea confirmed by clinical, radiologic, or histopathologic findings. Assign codes that reflect tumor site, any documented invasion or metastasis, and relevant clinical details for billing and record-keeping.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    C33Malignant neoplasm of trachea

    DRG Codes

    3 rows

    DRG CodeDescription
    180Respiratory Neoplasms with MCC
    181Respiratory Neoplasms with CC
    182Respiratory Neoplasms without CC/MCC

    Typical Clinical Scenarios

    • An older adult with a history of heavy tobacco use presents to the emergency department with progressive dyspnea, cough, and hemoptysis. Imaging (CT chest) reveals an endotracheal mass causing airway narrowing and bronchoscopy with biopsy confirms a primary malignant tumor originating in the trachea; a diagnosis from this group is assigned to document the primary tracheal malignancy. Typical codes: C33
    • A middle-aged patient with hoarseness, recurrent respiratory infections, and unexplained weight loss undergoes evaluation by ENT; direct laryngoscopy and CT identify a locally invasive tracheal carcinoma extending into adjacent soft tissues, with histopathology confirming malignancy of the trachea. The diagnosis from this group is used to capture the primary site of the neoplasm for staging and care coordination. Typical codes: C33
    • A patient with known metastatic lung cancer develops new central airway obstruction symptoms; bronchoscopy identifies a distinct malignant lesion arising in the trachea separate from the pulmonary metastases, and biopsy confirms primary tracheal cancer as a comorbid condition complicating management. The tracheal malignancy is coded from this group to indicate the additional primary neoplasm affecting respiratory function. Typical codes: C33

    Related Codes

    C30-MALIGNANT-NEOPLASM-NASAL-CAVITY-MIDDLE-EAR

    ICD-10-CM Code For Malignant Neoplasm Of Nasal Cavity And Middle Ear: Group Overview

    C31-MALIGNANT-NEOPLASM-ACCESSORY-SINUSES

    ICD-10-CM Code For Malignant Neoplasm Of Accessory Sinuses: Group Overview

    C32-MALIGNANT-NEOPLASM-OF-LARYNX

    ICD-10-CM Code For Malignant Neoplasm Of Larynx: Group Overview

    C34-MALIGNANT-NEOPLASM-OF-BRONCHUS-AND-LUNG

    ICD-10-CM Code For Malignant Neoplasm Of Bronchus And Lung: Group Overview

    C37-MALIGNANT-NEOPLASM-OF-THYMUS

    ICD-10-CM Code For Malignant Neoplasm Of Thymus: Group Overview

    C38-MALIGNANT-NEOPLASM-HEART-MEDIASTINUM-PLEURA

    ICD-10-CM Code For Malignant Neoplasm Of Heart Mediastinum And Pleura: Group Overview

    C39-MALIGNANT-NEOPLASM-OTHER-ILL-DEFINED-SITES

    ICD-10-CM Code For Malignant Neoplasm Of Other And Ill-Defined Sites In The Respiratory System And Intrathoracic Organs: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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