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 0HRRX
Replacement of Toe Nail with Autol Sub, Extern Approach
Replacement of Toe Nail with Synth Sub, Extern Approach
Replacement of Toe Nail with Nonaut Sub, Extern Approach