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 08WKX
Revision of Synthetic Substitute in Left Lens, Perc Approach
Revision of Synthetic Substitute in L Lens, Extern Approach
Revision of Other Device in Left Lens, Percutaneous Approach