MedicaidBilling CodesMedium impact
Ambulance Place of Service Codes
Missouri Medicaid (MO HealthNet)·MO · Emergency Medicine·Provider Notice
Effective date
Apr 28, 2026
We identified it
Jun 20, 2026
Summary
MO HealthNet (Missouri Medicaid) has clarified that ambulance providers must use specific destination-based place of service codes when billing for transport services. The policy prohibits using Medicare POS codes 41 (land) and 42 (air/water) and requires using appropriate destination codes like 21 (Inpatient Hospital) or 23 (Emergency Room).
Action Required
Immediately: Billing team must update ambulance claim submissions to use destination-based POS codes (21, 23, 26, 51, 53, 55, 56, 61) instead of Medicare codes 41 and 42 for all MO HealthNet ambulance transports. Update billing system edits to prevent use of invalid POS codes 41 and 42. Review section 5.2 of the Ambulance Manual for complete guidance.