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 05W3X
Revision of Neuro Lead in R Innom Vein, Perc Endo Approach
Revision of Neuro Lead in R Innom Vein, Perc Approach
Revision of Neuro Lead in R Innom Vein, Extern Approach
Revision of Neuro Lead in R Innom Vein, Open Approach