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 09N10
Release Left External Ear, Percutaneous Approach
Release Left External Ear, External Approach
Release Left External Ear, Open Approach
Release Left External Ear, Percutaneous Endoscopic Approach