Final answer:
When a brand name or high-cost medication is not covered by the PBM formulary, the insurance rejection a technician would see is NDC not covered.
Step-by-step explanation:
When a brand name or high-cost medication is not covered by the PBM formulary, the insurance rejection a technician would see is NDC not covered. NDC stands for National Drug Code, which is a unique identifier for each prescription drug. If a medication is not covered by the formulary, it means it is not on the list of approved drugs for that specific insurance plan.