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 0GPRX
Remove Drain Dev from Parathyroid Gland, Perc Endo
Removal of Drain Dev from Parathyroid Gland, Open Approach
Removal of Drain Dev from Parathyroid Gland, Extern Approach
Removal of Drain Dev from Parathyroid Gland, Perc Approach