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 0HR3X
Replace L Ear Skin w Autol Sub, Part Thick, Extern
Replace L Ear Skin w Autol Sub, Cel Susp, Extern
Replace L Ear Skin w Nonaut Sub, Full Thick, Extern
Replace L Ear Skin w Autol Sub, Full Thick, Extern
Replace L Ear Skin w Nonaut Sub, Part Thick, Extern
Replace L Ear Skin w Synth Sub, Full Thick, Extern
Replace L Ear Skin w Synth Sub, Part Thick, Extern
Replacement of Left Ear Skin with Synth Sub, Extern Approach