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 2W3TX
Immobilization of Left Foot using Other Device
Immobilization of Left Foot using Brace
Immobilization of Left Foot using Cast
Immobilization of Left Foot using Splint