2023

  1. ICD-10-CM Codes
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  2. C00-D49
    3. ›
  3. C30-C39
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  4. C34-
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  5. 2023 ICD-10-CM Diagnosis Code C34.00

2023 ICD-10-CM Diagnosis Code C34.00

Malignant neoplasm of unspecified main bronchus

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • C34.00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM C34.00 became effective on October 1, 2022.
  • 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
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to C34.00:
  • C00-D49
    2023 ICD-10-CM Range C00-D49

    Neoplasms

    Note
    • Functional activity
    • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
    • Morphology [Histology]
    • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
    • Primary malignant neoplasms overlapping site boundaries
    • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
    • Malignant neoplasm of ectopic tissue
    • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
    Neoplasms
  • C30-C39
    2023 ICD-10-CM Range C30-C39

    Malignant neoplasms of respiratory and intrathoracic organs

    Includes
    • malignant neoplasm of middle ear
    Type 1 Excludes
    Malignant neoplasms of respiratory and intrathoracic organs
  • C34
    ICD-10-CM Diagnosis Code C34

    Malignant neoplasm of bronchus and lung

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • Kaposi's sarcoma of lung (C46.5-)
    • malignant carcinoid tumor of the bronchus and lung (C7A.090)
    Use Additional
    • 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)
    Malignant neoplasm of bronchus and lung
  • C34.0
    ICD-10-CM Diagnosis Code C34.0

    Malignant neoplasm of main bronchus

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Applicable To
    • Malignant neoplasm of carina
    • Malignant neoplasm of hilus (of lung)
    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 v40.0):
  • 180 Respiratory neoplasms with mcc
  • 181 Respiratory neoplasms with cc
  • 182 Respiratory neoplasms without cc/mcc

Convert C34.00 to ICD-9-CM

Code 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
ICD-10-CM Codes Adjacent To C34.00
C32 Malignant neoplasm of larynx
C32.0 Malignant neoplasm of glottis
C32.1 Malignant neoplasm of supraglottis
C32.2 Malignant neoplasm of subglottis
C32.3 Malignant neoplasm of laryngeal cartilage
C32.8 Malignant neoplasm of overlapping sites of larynx
C32.9 Malignant neoplasm of larynx, unspecified
C33 Malignant neoplasm of trachea
C34 Malignant neoplasm of bronchus and lung
C34.0 Malignant neoplasm of main bronchus
C34.00 Malignant neoplasm of unspecified main bronchus
C34.01 Malignant neoplasm of right main bronchus
C34.02 Malignant neoplasm of left main bronchus
C34.1 Malignant neoplasm of upper lobe, bronchus or lung
C34.10 Malignant neoplasm of upper lobe, unspecified bronchus or lung
C34.11 Malignant neoplasm of upper lobe, right bronchus or lung
C34.12 Malignant neoplasm of upper lobe, left bronchus or lung
C34.2 Malignant neoplasm of middle lobe, bronchus or lung
C34.3 Malignant neoplasm of lower lobe, bronchus or lung
C34.30 Malignant neoplasm of lower lobe, unspecified bronchus or lung
C34.31 Malignant neoplasm of lower lobe, right bronchus or lung

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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