2024 ICD-10-CM Diagnosis Code C34.00

Malignant neoplasm of unspecified main bronchus

  • C34.00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM C34.00 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C34.00 – other international versions of ICD-10 C34.00 may differ.

The following code(s) above C34.00 contain annotation back-references

 that may be applicable to C34.00:

  • C00-D49  Neoplasms
  • C30-C39  Malignant neoplasms of respiratory and intrathoracic organs
  • C34  Malignant neoplasm of bronchus and lung
  • C34.0  Malignant neoplasm of main bronchus

Approximate Synonyms

  • Adenocarcinoma, main bronchus
  • Cancer of the bronchus, main
  • Large cell carcinoma, main bronchus
  • Primary adenocarcinoma of main bronchus
  • Primary large cell carcinoma of main bronchus
  • Primary malignant neoplasm of main bronchus
  • Primary small cell carcinoma of main bronchus
  • Primary squamous cell carcinoma of main bronchus
  • Small cell carcinoma, main bronchus
  • Squamous cell carcinoma, main bronchus

ICD-10-CM C34.00 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 180 Respiratory neoplasms with mcc
  • 181 Respiratory neoplasms with cc
  • 182 Respiratory neoplasms without cc/mcc

Convert C34.00 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change