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 09Q20
Repair Bilateral External Ear, External Approach
Repair Bilateral External Ear, Percutaneous Approach
Repair Bilateral External Ear, Open Approach
Repair Bilateral External Ear, Perc Endo Approach