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 2W3KX
Immobilization of Left Finger using Other Device
Immobilization of Left Finger using Brace
Immobilization of Left Finger using Splint
Immobilization of Left Finger using Cast