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 0NN44Z
Release Left Parietal Bone, Percutaneous Endoscopic Approach
Release Left Parietal Bone, Open Approach
Release Left Parietal Bone, Percutaneous Approach