ENQUIRY DENTAL CODE (ADA CODE) D4910 – PERIODONTAL MAINTENANCE (CDT 2022) For Dentists who bill Periodontal Maintenance a lot but not sure why many of those are not getting paid. DENTAL CODE (ADA CODE) D4910 – PERIODONTAL MAINTENANCE (CDT 2022) This procedure is initiated following periodontal treatment and go on at, not set in …