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 031T0
Bypass L Temporal Art to Intracran Art w Synth Sub, Open
Bypass L Temporal Art to Intracran Art w Nonaut Sub, Open
Bypass L Temporal Art to Intracran Art w Autol Art, Open
Bypass Left Temporal Artery to Intracran Art, Open Approach
Bypass L Temporal Art to Intracran Art w Autol Vn, Open