Ben Weiss May 8, 2024 Billing, EHR, Medicaid 2024 - Most Commonly Used Addiction Treatment and Behavioral Health CPT Codes for Billing and Reimbursement Ben Weiss May 8, 2024 Billing, EHR, Medicaid When the CMS drops a new update to existing codes, it’s considered a “new codeset” - a shiny new box of codes that addiction treatment billers can use to communicate about services rendered with insurance payers.