I’m pretty new and billing/coding and need clarification when billing for Medicaid Replacement Plans.

I work at an urgent care center.

(Aetna Better Health of Missouri)

1. Can we bill the Medicaid replacement plan for labs that we send out like 87491 and 87591 or do the Labs need to bill the plans directly?
2. We have a global rate and also fee for service on our contract. I’ve coded for the S9083, 87491/87591, and have been paid for all services. Is this a payment error and should I be expecting at take back on this claim….

Any clarification would be great.