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 0PC20
Extirpation of Matter from 3 or More Ribs, Perc Approach
Extirpation of Matter from 3 or More Ribs, Open Approach
Extirpation of Matter from 3+ Ribs, Perc Endo Approach