Malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs (C39) ICD-10-CM
The C39 code range covers malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs with 3 ICD-10-CM diagnosis codes. 2 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an 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
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the C39 Range 3 codes · 2 billable
About the C39 Code Range
These cancers involve other or poorly specified sites in the respiratory system or organs inside the chest.
Within C39, the subdivisions distinguish an unspecified part of the upper respiratory tract, C39.0, from the lower respiratory tract, C39.9.
Questions About This Page
How many billable codes are in the C39 range?
Of the 3 codes in this range, 2 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the C39 range classify?
The range classifies malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
