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 05CL0
Extirpation of Matter from Intracranial Vein, Open Approach
Extirpate of Matter from Intracran Vein, Perc Endo Approach
Extirpation of Matter from Intracranial Vein, Perc Approach