The Device No Device is identified by letter "Z" and occupies the 6th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 031G0Z
Bypass Intracranial Artery to Intracran Art, Open Approach
Bypass Intracran Art to Intracran Art w Autol Vn, Open
Bypass Intracran Art to Intracran Art w Autol Art, Open
Bypass Intracran Art to Intracran Art w Synth Sub, Open
Bypass Intracran Art to Intracran Art w Nonaut Sub, Open