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 2W3BX
Immobilization of Left Upper Arm using Cast
Immobilization of Left Upper Arm using Splint
Immobilization of Left Upper Arm using Other Device
Immobilization of Left Upper Arm using Brace