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 08UNX
Supplement Right Upper Eyelid with Autol Sub, Perc Approach
Supplement Right Upper Eyelid with Autol Sub, Open Approach
Supplement R Up Eyelid with Synth Sub, Extern Approach
Supplement Right Upper Eyelid with Nonaut Sub, Open Approach
Supplement Right Upper Eyelid with Nonaut Sub, Perc Approach
Supplement R Up Eyelid with Autol Sub, Extern Approach
Supplement R Up Eyelid with Nonaut Sub, Extern Approach
Supplement Right Upper Eyelid with Synth Sub, Perc Approach
Supplement Right Upper Eyelid with Synth Sub, Open Approach