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 08CNX
Extirpation of Matter from Right Upper Eyelid, Perc Approach
Extirpation of Matter from Right Upper Eyelid, Open Approach
Extirpation of Matter from R Up Eyelid, Extern Approach