MedicaidBilling CodesMedium impact
AHCCCS DFSM Claims Clues - September 2019
Arizona Medicaid - AHCCCS·AZ · General Surgery, Orthopedics, Cardiothoracic Surgery +8 more·Claims & Billing
Effective date
Sep 1, 2019
We identified it
Jun 17, 2026
Summary
AHCCCS updated billing guidelines for assistant surgeon modifiers effective September 1, 2019. Non-physician providers (PA, NP, CNS) must now use only modifier AS when serving as assistant at surgery, while physicians continue using modifiers 80, 81, or 82. Updated MSIC billing requirements specify using MSIC NPI as rendering provider and proper claim form submission.
Action Required
Immediately: Update billing system rules so PA, NP, and CNS providers use only modifier AS (not modifier 80) when billing as assistant surgeons under their own provider numbers. For MSIC claims, ensure MSIC NPI is used as rendering provider and bill T1015 once per day for CRS members. Train billing staff on proper modifier usage to prevent duplicate claim denials.