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 0H9CX
Drainage of Left Upper Arm Skin, External Approach
Drainage of L Up Arm Skin with Drain Dev, Extern Approach
Drainage of Left Upper Arm Skin, External Approach, Diagn