Hi Guest!

D7951 - sinus augmentation with bone or bone substitutes via a lateral open approach
can be crosscoded to:
21210 - graft, bone; nasal, maxillary, or malar areas
*use -52 modifier for reduced services when bone is not obtained from the patient

D7950 - osseous, osteoperiosteal, or cartilage graft of the mandible or maxilla - autogenous or nonautogenous, by report
Can be cross coded to:
21210 - Graft, bone; nasal, maxillary or malar areas (includes obtaining graft)
21215 - Graft, bone; mandible (includes obtaining graft)
**use modifier -52 for reduced services when bone is not obtained from patient


Hope this helps!