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 0HPPX
Removal of Nonaut Sub from Skin, Extern Approach
Removal of Other Device from Skin, External Approach
Removal of Synthetic Substitute from Skin, External Approach
Removal of Autol Sub from Skin, Extern Approach
Removal of Drainage Device from Skin, External Approach