Provider services: 866-274-5888 (TTY: 711), Monday – Friday, 8 a.m. – 8 p.m. Eastern time
Availity Essentials customer service/tech support: 800-282-4548
For information about joining our network
Home and community-based services providers
- Email
LTSSContracting@humana.com - Call 866-274-5888, Monday – Friday, from 8 a.m. – 8 p.m., Eastern time
Physical health network requests
- Email
INProviderUpdates@humana.com
Behavioral health network requests
- Email
INBHMedicaid@humana.com
Prior authorization requests
Physician-administered medications prior authorization requests: 866-274-5888, Monday – Friday, 8 a.m. –8 p.m. Eastern time
Authorization Intake Team Phone: 866-274-5888, Monday - Friday 7am -7pm ET
Fax IHCP Prior Authorization Request Form to 502-324-6376 (Medicaid only) or 502-405-5020 (dual eligible) for both physical health and behavioral health authorizations.
To request a Peer to Peer (P2P) discussion on a determination with a Humana Healthy Horizons provider reviewer, please send an email to
Provider correspondence
Humana Healthy Horizons in Indiana
Attn: Provider Correspondence
P.O Box 14169
Lexington, KY 40512-4169
Provider informal claim disputes
Humana Healthy Horizons in Indiana Informal Claim Dispute
P.O. Box 14169
Lexington, KY 40512-4169
Provider formal disputes
Formal disputes can be submitted two ways.
- In writing by mailing to:
Humana Healthy Horizons in Indiana
Attn: Formal Disputes
201 North Illinois Street
Suite 1200
Indianapolis, IN 46204
- By email
IndianaFormalDispute@humana.com
If you need support after hours, please call 866-274-5888 (TTY:711).
Humana offers after-hours assistance to our providers through our Interactive Voice Response (IVR) system. IVR provides general information, 24 hours per day, 7 days a week for physical and behavioral health.