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 09U0X
Supplement R Ext Ear with Autol Sub, Extern Approach
Supplement R Ext Ear with Synth Sub, Extern Approach
Supplement Right External Ear with Synth Sub, Open Approach
Supplement R Ext Ear with Nonaut Sub, Extern Approach
Supplement Right External Ear with Nonaut Sub, Open Approach
Supplement Right External Ear with Autol Sub, Open Approach