2024 ICD-10-CM Diagnosis Code C39.9

Malignant neoplasm of lower respiratory tract, part unspecified

  • C39.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Malignant neoplasm of lower respiratory tract, part unsp
  • The 2024 edition of ICD-10-CM C39.9 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C39.9 – other international versions of ICD-10 C39.9 may differ.

Applicable To

  • Malignant neoplasm of respiratory tract NOS

The following code(s) above C39.9 contain annotation back-references

 that may be applicable to C39.9:

  • C00-D49  Neoplasms
  • C30-C39  Malignant neoplasms of respiratory and intrathoracic organs
  • C39  Malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs

Approximate Synonyms

  • Lower respiratory tract cancer
  • Malignant neoplasm of lower respiratory tract

Clinical Information

  • Malignant neoplasms originating in the respiratory tract

ICD-10-CM C39.9 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 C39.9 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