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 00CD0
Extirpation of Matter from Medulla Oblongata, Open Approach
Extirpation of Matter from Medulla Oblongata, Perc Approach
Extirpate of Matter from Medulla Oblong, Perc Endo Approach