Hi jbublik! D4275 = non-autogenous connective tissue graft (including recipient site and donor material) first tooth, implant, or edentulous tooth position in graft can be crosscoded to: 41870 – Periodontal mucosal grafting This crosscode is listed in Aetna”s medical policy for “Oral Surgery Dental in Nature” policy at the link below: Hope this helps!