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 01X20
Transfer Phrenic Nerve to Phrenic Nerve, Open Approach
Transfer Phrenic Nerve to Cervical Nerve, Open Approach
Transfer Phrenic Nerve to Cervical Nerve, Perc Endo Approach
Transfer Phrenic Nerve to Phrenic Nerve, Perc Endo Approach