Hi Guest!

D4263 - bone replacement graft - first site in quadrant
can be crosscoded to:
21210 - graft, bone; nasal, maxillary, or malar areas
or,
21215 - graft, mandibular

**use modifier -52 for reduced services when bone is not obtained from patient


D4266 - guided tissue regeneration - resorbable barrier, per site
can be cross coded to:
41870 - Periodontal mucosal grafting


Hope this helps!