Hi Guest/Star RR! No problem: 1) Stabilize Pheumatization of maxillary sinus Coding options: 21210 – graft, bone; nasal, maxillary, or malar areas **use modifier -52 for reduced services when bone is not obtained from patient 2) Sinus Lift Upper Left Quadrant Coding options: 21210 – graft, bone; nasal, maxillary, or malar areas **use modifier -52 for reduced services when bone is not obtained from patient 3) Bone Stabilizers x 2 Upper left Coding options: 21248 – Reconstruction of mandible or maxilla, endosteal implant (eg, blade, cylinder); partial (3 or less) 21249 – Reconstruction of mandible or maxilla, endosteal implant (eg, blade, cylinder); complete (4 or more) Hope this helps!