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 0CBXX
Excision of Lower Tooth, External Approach, Multiple
Excision of Lower Tooth, Open Approach, Multiple
Excision of Lower Tooth, Open Approach, All
Excision of Lower Tooth, Open Approach, Single
Excision of Lower Tooth, External Approach, All
Excision of Lower Tooth, External Approach, Single