In the Preventive section of the CDT manual, a new procedure code was added for topical application of fluoride D1208. The nomenclature was revised for D1206 to indicate topical application of fluoride varnish. Two codes, D1203 and D1204 were deleted.
Simply put D1206 is for a varnish while D1208 is for fluoride. The appropriate code will depend on the type of fluoride being administered to the patient.