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 005H0
Destruction of Oculomotor Nerve, Open Approach
Destruction of Oculomotor Nerve, Percutaneous Approach
Destruction of Oculomotor Nerve, Perc Endo Approach