Hi Guest! D7950 – osseous, osteoperiosteal, or cartilage graft of the mandible or maxilla – autogenous or nonautogenous, by report D7951 – sinus augmentation with bone or bone substitutes via a lateral open approach Dental coding is not our forte here like medical coding is, however i may have found some helpful information on this subject: “If a bone graft is performed on a separate day from the extraction to increase height, width, or volume of the alveolar ridge, then D7950 should be reported. Keep in mind that D7950 includes harvesting autogenous bone or using freeze‐dried bone material” “If bone is placed during a sinus lift procedure to increase alveolar height for implant placement, D7951 (horizontal approach) or D7952 (vertical approach/sinus tap) should be reported.” Hope this helps!