The Approach External is identified by letter "X" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 0WC9X
Extirpation of Matter from R Pleural Cav, Perc Approach
Extirpation of Matter from R Pleural Cav, Open Approach
Extirpation of Matter from R Pleural Cav, Extern Approach
Extirpation of Matter from R Pleural Cav, Perc Endo Approach