ICD-10 Code C34.01 – Malignant neoplasm of right main bronchus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C34.01 – Malignant neoplasm of right main bronchus
What it is
C34.01 identifies a malignant tumor arising in the right main bronchus, the major airway leading into the right lung. Use this code when the record specifies primary cancer in that exact bronchial location.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include cough, hemoptysis, wheezing, dyspnea, or recurrent post-obstructive infection when the airway is narrowed by tumor.
When to use this code
Use C34.01 when the provider documents primary malignant neoplasm of the right main bronchus, including pathology, imaging, or operative notes that clearly identify this site. It is appropriate for confirmed cancer at this bronchial location, not for nonspecific lung masses. Check documentation if laterality or exact bronchial origin is unclear.
Do not use for
Do not use this code for metastatic disease to the bronchus, unspecified lung cancer, or malignancy of a different bronchus or lung lobe. If the record does not specify the right main bronchus, check documentation.
Coding tip
Confirm the exact anatomic site in the pathology or provider note before assigning C34.01.