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 0WCDX
Extirpation of Matter from Pericardial Cavity, Open Approach
Extirpation of Matter from Pericardial Cavity, Perc Approach
Extirpation of Matter from Pericard Cav, Perc Endo Approach
Extirpation of Matter from Pericard Cav, Extern Approach