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Indiana prior authorization resources

Humana Healthy Horizons® in Indiana members may see any participating network provider, including specialists, and receive services at inpatient hospitals. Humana Healthy Horizons does not require referrals from primary care providers to see participating specialists; however, prior authorization must be obtained to see nonparticipating providers in most situations (please review the provider manual for a few exceptions).

Medicaid doctor reviews documents

Services that require prior authorization

Providers should review the Humana Healthy Horizons in Indiana (Medicaid) Preauthorization and Notification List online at

Pharmacy prior authorization

The process by which medication is supplied by a pharmacy and billed through the pharmacy benefit includes medication prior authorization, quantity limits and medication exceptions. To learn more or view the full list of medications requiring prior authorization:

  • Contact Us: 800-555-2546, Monday - Friday 8am -11pm ET. Please note, Urgent After-Hours Voicemail is monitored on the weekends.

To request prior authorization for services

Except where otherwise noted in your Provider Manual requests for services may be initiated:

  • Online via Availity Essentials. Registration is required, and online prior authorization requests are encouraged.
  • By calling our authorization intake team directly at
    • 800-555-2546, Monday - Friday 8am -11pm ET.
  • By emailing

Statewide Uniform Preferred Drug List (SUPDL)