Payment Policy: Add-On Code Billed Without Primary Code
Governs submission and reimbursement rules for CPT/HCPCS add-on codes on outpatient professional claims for providers submitting to Arizona Complete Health (Centene-operated health plans). Applies to claims processing within the same claim and claims history.
No material clinical or coverage changes in this revision.
Add-On Code Coverage
Add-On Code Coverage Criteria
Covered when ALL of the following are met:
Add-on code payable only when primary present
- Add-on CPT/HCPCS codes (identified by the CPT '+' symbol) must be billed only in conjunction with an appropriate primary procedure code on the same outpatient professional claim or in the member's claims history for the same date of service and provider.
- The primary procedure code must be present on the current claim or in claims history; if the primary code is absent, the add-on service line will be denied.
- If the primary procedure code is present but has been denied by another claims payment rule, the add-on code will also be denied.
Claims processing rule
Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.