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 00C00
Extirpation of Matter from Brain, Open Approach
Extirpation of Matter from Brain, Percutaneous Approach
Extirpation of Matter from Brain, Perc Endo Approach