0NW: Revision — Head and Facial BonesCorrecting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device
0 Skull0 Open0 Drainage Device; 3 Infusion Device; 4 Internal Fixation Device; 5 External Fixation Device; 7 Autologous Tissue Substitute; J Synthetic Substitute; K Nonautologous Tissue Substitute; M Bone Growth Stimulator; N Neurostimulator Generator; S Hearing DeviceZ No Qualifier0 Skull3 Percutaneous; 4 Percutaneous Endoscopic; X External0 Drainage Device; 3 Infusion Device; 4 Internal Fixation Device; 5 External Fixation Device; 7 Autologous Tissue Substitute; J Synthetic Substitute; K Nonautologous Tissue Substitute; M Bone Growth Stimulator; S Hearing DeviceZ No QualifierB Nasal Bone; W Facial Bone0 Open; 3 Percutaneous; 4 Percutaneous Endoscopic; X External0 Drainage Device; 4 Internal Fixation Device; 5 External Fixation Device; 7 Autologous Tissue Substitute; J Synthetic Substitute; K Nonautologous Tissue Substitute; M Bone Growth StimulatorZ No Qualifier