C34.0UpcomingCategory · further specificity required

Malignant neoplasm of main bronchus

C34 · Inherited instructions

Use additional code

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)

Excludes 1

Kaposi's sarcoma of lung (C46.5-)
malignant carcinoid tumor of the bronchus and lung (C7A.090)

C30-C39 · Inherited instructions

Excludes 1

mesothelioma (C45.-)

More specific codes

C34.00Malignant neoplasm of unspecified main bronchus C34.01Malignant neoplasm of right main bronchus C34.02Malignant neoplasm of left main bronchus

Claims & coverage

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.

Official coding guidelines → · CMS ↗

First observed · 2015-10-01

Code history

Latest recorded change · FY2017

ChangedUnchanged

FY2017

Effective from 2016-10-01

Inherited rules changed

Malignant neoplasm of main bronchus

Category — select a more specific code

CDC/NCHS · FY2017

All editions (19)

All editions	Effective from	Code history
FY2016	2015-10-01	First observed
FY2017	2016-10-01	Inherited rules changed
FY2018	2017-10-01	No tabular change
FY2019	2018-10-01	No tabular change
FY2020	2019-10-01	No tabular change
FY2020 · April	2020-04-01	No tabular change
FY2021	2020-10-01	No tabular change
FY2021 · 01-01	2021-01-01	No tabular change
FY2022	2021-10-01	No tabular change
FY2022 · 04-01	2022-04-01	No tabular change
FY2023	2022-10-01	No tabular change
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	No tabular change
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	No tabular change
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

Inclusion terms

Malignant neoplasm of carina
Malignant neoplasm of hilus (of lung)

Inherited instructions

C34 · Malignant neoplasm of bronchus and lung

Excludes 1

Kaposi's sarcoma of lung (C46.5-)
malignant carcinoid tumor of the bronchus and lung (C7A.090)

Use additional code

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)

Chapters 2 · Neoplasms (C00-D49)

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).

C30-C39 · Malignant neoplasms of respiratory and intrathoracic organs (C30-C39)

Includes

malignant neoplasm of middle ear

Excludes 1

mesothelioma (C45.-)

More specific codes

C34.00Malignant neoplasm of unspecified main bronchusBillable / specific C34.01Malignant neoplasm of right main bronchusBillable / specific C34.02Malignant neoplasm of left main bronchusBillable / specific

Official index references (8)

Neoplasm, neoplastic (8)

Neoplasm, neoplastic › bronchus › carinaNeoplasms
Neoplasm, neoplastic › bronchus › mainNeoplasms
Neoplasm, neoplastic › carina(bronchus)Neoplasms
Neoplasm, neoplastic › cartilage(articular) (joint) NEC › bronchiNeoplasms
Neoplasm, neoplastic › hilus of lungNeoplasms
Neoplasm, neoplastic › lung › carinaNeoplasms
Neoplasm, neoplastic › lung › hilusNeoplasms
Neoplasm, neoplastic › lung › main bronchusNeoplasms

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
C34.1	Malignant neoplasm of upper lobe, bronchus or lung	Category · further specificity required
C34.2	Malignant neoplasm of middle lobe, bronchus or lung	Billable / specific
C34.3	Malignant neoplasm of lower lobe, bronchus or lung	Category · further specificity required
C34.8	Malignant neoplasm of overlapping sites of bronchus and lung	Category · further specificity required
C34.9	Malignant neoplasm of unspecified part of bronchus or lung	Category · further specificity required

Official titles and instructions are preserved in their source language. Official sources ↗