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 00C70
Extirpation of Matter from Cereb Hemis, Perc Endo Approach
Extirpation of Matter from Cereb Hemis, Perc Approach
Extirpation of Matter from Cereb Hemis, Open Approach