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 0HRHX
Replace R Up Leg Skin w Synth Sub, Full Thick, Extern
Replace R Up Leg Skin w Nonaut Sub, Part Thick, Extern
Replace R Up Leg Skin w Synth Sub, Part Thick, Extern
Replace R Up Leg Skin w Autol Sub, Cel Susp, Extern
Replacement of R Up Leg Skin with Synth Sub, Extern Approach
Replace R Up Leg Skin w Autol Sub, Full Thick, Extern
Replace R Up Leg Skin w Nonaut Sub, Full Thick, Extern
Replace R Up Leg Skin w Autol Sub, Part Thick, Extern