MedicaidAdministrativeHigh impact
Applied Behavior Analysis Billing Tip: Getting 24j and Signatures Right
Missouri Medicaid (MO HealthNet)·MO · Psychiatry·Provider Notice
Effective date
May 28, 2026
We identified it
Jun 20, 2026
Summary
New billing guidance for Applied Behavior Analysis services specifies which National Provider Identifier (NPI) to use in Field 24j of CMS-1500 forms based on provider type, and clarifies signature requirements for session notes. Behavior Analysts and Provisional Licensees must use their own NPI, while Behavior Technicians use their supervisor's NPI.
Action Required
Immediately: Billing team must update CMS-1500 Field 24j entry procedures - Behavior Analysts and Provisional Licensees enter their own NPI, Behavior Technicians enter supervisor's NPI, Solo Practitioners leave blank. Verify all ABA session notes have proper signatures from service providers (not billing staff or supervisors). For BT/RBT services, ensure both technician and supervisor signatures are present. Update billing system edits and staff training to prevent post-payment recoupment.