DHS 107.07(1)(j)3.3. General anesthesia, intravenous conscious sedation, nitrous oxide, and non-intravenous conscious sedation. DHS 107.07 NoteNote: Orthodontia may be covered under early and periodic screening, diagnosis and treatment (EPSDT) services. Please see s. DHS 107.22 (4). DHS 107.07(1m)(1m) Covered services; dental hygienists. Except as provided under subs. (2), (3), (4), and (4m), all of the following dental services are covered services when provided by a dental hygienist who is individually certified under ch. DHS 105 within the scope of dental hygiene as defined in s. 447.01 (3), Stats.: DHS 107.07(2)(a)(a) All of the following dental services require prior authorization in order to be reimbursed under MA: