As a Qualified Health Plan in the Health Insurance Marketplace, CareSource provides prescription drug coverage. This benefit provides coverage for prescriptions obtained from a retail pharmacy, mail-order pharmacy or specialty pharmacy; and those that are administered in the patient’s home, including drugs administered through a home health agency.

CareSource uses evidence-based guidelines to ensure health care services and medications meet the standards of excellent medical practice and are the lowest cost alternative for the member. These requirements ensure appropriate use of these medications.

Cost Share

Members may be required to pay cost share for prescription drugs. Cost share amounts vary based on plan and medication. Preventive drugs are covered at no member cost share. View the Provider Manual for more information, or call us at 1-833-230-2101.

Drug Formulary

CareSource updates the formulary regularly. Visit the Drug Formulary page for more information.

Generic Substitution

A pharmacy will provide a generic drug if available in place of a brand name drug. This is called generic substitution. Members and providers can expect the generic drug to produce the same effect and have the same safety profile as the brand name drug. If a brand name drug is requested when an equivalent generic drug is available, you may need to request prior authorization. Also, members may pay additional costs for brand name drugs when an equivalent generic drug is available.

Prior Authorization

Medications administered under the pharmacy benefit may require prior authorization before they will be covered. Refer to the Drug Formulary or Formulary Search Tool to determine which drugs need prior authorization.

NOTE: Opioid drugs will always require prior authorization in the following circumstances:

  • More than 90 days of therapy in the last 365 days,
  • More than 80 morphine milligram equivalents per day,
  • Concurrent therapy with benzodiazepines, and
  • All extended-release opioids require prior authorization.

Medications administered in an outpatient setting by a physician and billed under a member’s medical benefit may also require prior authorization. Refer to the Navigate Authorization Requirements for Medications Under the Medical Benefit to determine which drugs require a prior authorization.

In accordance with West Virginia Senate Bill 267, all prior authorization requests must be submitted electronically effective Jan. 1, 2024.

Prior authorization requests for physician administered drugs (billed under medical benefit) can be submitted electronically via the CareSource Provider Portal (see Providers, then Prior Authorization and Notifications, then Physician Administered Pharmacy Codes).

Prior authorization requests for pharmacy benefit administered medications can be submitted electronically via the SureScripts or CoverMyMeds Portals.

NOTE: All oncology medication treatment regimen requests must be submitted and reviewed through the EVITI Connect Portal.

For all prior authorization decisions (standard or expedited), CareSource provides notice to the provider and member as expeditiously as the member’s health condition requires. Please specify if you believe the request is urgent.


CareSource pharmacy and medical policies include drug-specific and therapy class policies to be used as a guide when determining health care coverage for our members with benefit plans covering prescription drugs.

The policies are written for those prescription drugs that are non-formulary, formulary with prior authorization or require step therapy. The policy is a tool to be interpreted in conjunction with the member’s specific benefit plan. Access pharmacy policies by selecting Policies from the Quick Links for more information.


CareSource has an exception process that allows the member or the member’s representative to make a request for an exception. Reasons for exceptions may include intolerance to drugs, allergies to drugs, or inadequate/inappropriate response to drugs listed on the formulary. The member or member’s representative can call Member Services to make the request or complete the online Member Exception Request for Non-Formulary Medication.

Quantity Limits

Some drugs have limits on how much can be given to a member at one time. Quantity limits may be based on several factors such as drug makers’ recommended dosing, patient safety, applicable state and federal laws, or the Food & Drug Administration (FDA) recommendations.

Step Therapy

Sometimes, CareSource will require a member to try a less expensive drug used to treat the same condition before “stepping up” to a medication that costs more. This is called step therapy. Certain drugs may only be covered if step therapy is met in accordance with applicable state and federal law.

Therapeutic Interchange

A member might have a drug allergy or intolerance, or a certain drug might not be effective. If a non-formulary agent is requested, the provider will need to submit a prior authorization request. This is called therapeutic interchange.

Home Infusion Therapy

For most home infusion therapy services, CareSource does not require participating preferred providers to submit prior authorization requests. Please refer to the links below for a list of home infusion therapy prior authorization requirements, pharmacy criteria and billing requirements.


Maximum Allowable Cost (MAC)

CareSource is dedicated to providing the most current MAC pricing for drug reimbursement.

MAC pricing can be accessed through the secure ESI Provider Portal.

MAC Appeals can be completed through the portal and by following the Navigate ESI Appeals Process instructions.

Pharmaceutical Management Procedures

To learn more about how to use our pharmaceutical management procedures, look in the drug formulary. CareSource provides pharmaceutical management procedures annually and after updates. Changes are made in writing by mail, fax or email or via the web. If you have any questions regarding our pharmaceutical management procedures, please call Clinical Pharmacy Services at 1-833-230-2101.

Drug Safety Recalls

Sometimes, a drug manufacturer or the federal government issues drug recalls. To find out if a drug you have prescribed to a patient is being recalled, please check the listings on the FDA website.