ICD-O-3 Site Codes
Lung = pneumo-, pulmono-, broncho-, bronchiolo-, alveolar, hilar, Breathing = -pnea
|C34.1||Upper lobe, lung|
|C34.2||Middle lobe, lung (right lung only)|
|C34.3||Lower lobe, lung|
|C34.8||Overlapping lesion of lung|
Prior to the Second Edition of ICD-O, trachea and lung had the same ICD-O code. With the advent of ICD-O-2, trachea has a separate code (C33.9) from lung (C34._).
The ICD-O four-digit sub sites of C33.9 through C34.9 are considered part of a single primary site. Since lung is a paired organ, laterality must be coded.