Prior Authorization

Pharmacy Prior Authorization

The Texas Medicaid formulary includes all legend and over-the-counter drugs. In addition, some vitamins and minerals and home health supply products are also available as a pharmacy benefit. Some Medicaid drugs are subject to one or both types of prior authorization, clinical and non-preferred. Prior authorization must be approved before the drug is dispensed. Prior authorization is not a guarantee of payment. Even if a drug has been prior authorized, reimbursement can be affected for a variety of reasons (e.g., the client is ineligible on the date of service or the claim transaction is incomplete). Pharmacy staff should verify client eligibility status before submitting claims.

Clinical Prior Authorization

Clinical prior authorizations are based on evidence-based clinical criteria and nationally recognized peer-reviewed information. They may apply to an individual drug or a drug class on the formulary, including some preferred and non-preferred drugs. There are certain clinical prior authorizations all Medicaid managed care organizations (MCO) are required to perform. Usage of all other clinical prior authorizations will vary between MCO at the discretion of each MCO.

Non-preferred Prior Authorization

The Texas Medicaid Preferred Drug List is arranged by drug class and contains a subset of many, but not all, drugs included on the Medicaid formulary. Drugs are identified as preferred or non-preferred on the list. Drugs listed as preferred, or those not listed at all, are available without prior authorization. Drugs identified as non-preferred require prior authorization. Managed care organizations are required to adhere to the preferred drug list. CHIP does not have a preferred drug list.

Obtaining PDL/Clinical Prior Authorization

Prescribing providers or their representatives should contact one of the following authorization authorities:

For Medicaid Managed Care

Traditional Medicaid

  • The Texas Prior Authorization Call Center accepts prior authorization requests by phone at 1-877-PA-TEXAS (1-877-728-3927) or online. Online submission at PAXpress is only available for non-preferred prior authorization requests.
    • Note: Xenical requires prior authorization but is reviewed internally by Texas Medicaid staff.

Drug Utilization Review Board

The Texas Drug Utilization Review Board develops recommendations for the preferred drug list, suggests clinical prior authorizations on outpatient prescription drugs, recommends educational interventions for Medicaid providers, and reviews prospective and retrospective drug utilization across the Medicaid program.