The Approach Open is identified by number "0" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 0WJ30
Inspection of Oral Cavity and Throat, Percutaneous Approach
Inspection of Oral Cavity and Throat, External Approach
Inspection of Oral Cavity and Throat, Open Approach
Inspection of Oral Cavity and Throat, Perc Endo Approach