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 2W3CX
Immobilization of Right Lower Arm using Brace
Immobilization of Right Lower Arm using Other Device
Immobilization of Right Lower Arm using Splint
Immobilization of Right Lower Arm using Cast