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Join our network and find credentialing information.

Log in to Availity Essentials™ to access patient benefits, claims information and more.

Find tools and materials to support doing business with us.

Learn more about research and trends that impact your practice.

Find self-service info and phone numbers and update your provider data.

Review prior authorization lists for services, medications and submission guidance.

Prior authorization submission information

Professionally administered drugs prior authorization

Find appeals guidelines and payment policy information.

Learn how to submit claims and find coding guidance.

Find policies for procedures, devices and medications.

Review guidelines and health programs to support your patients and practice.

Find dental benefits, tools and resources.

Prior authorization for professionally administered drugs 

Locate state-specific resources for Humana Healthy Horizons® (Medicaid).

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Shop plans, learn about Medicare and explore member resources.

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Indiana provider claims and payments

Providers who care for Medicaid recipients with coverage through Humana Healthy Horizons® in Indiana can submit paper claims through the mail or electronic claims through their secure Availity Essentials™ account.

Paper claims should be mailed to Humana Claims, P.O. Box 14169, Lexington, KY 40512 4169

For electronic claims, sign in to your Availity Essentials account and select the Humana Indiana Medicaid payer ID 61101 from the Payer drop-down menu before submitting.

Claims processing timelines vary, based on the way they are submitted to Humana. Electronic HCBS claims submissions will be processed within 7 days of the receipt of the claim. All non-HCBS claims submitted electronically will be processed within 21 calendar days of the receipt of the claim. Paper claims may take up to 30 days to process.

Quick reference guide for answers to common questions about claims processing

Below we include information about authorizations, electronic claims submissions, payment integrity, disputes processes and more.

If you have any questions at all, or need other information, contact Provider Services at 866-274-5888.

Have your Humana claims payments deposited automatically into your bank account with electronic funds transfer (EFT) and electronic remittance advice (ERA).  You will sign up through Availity Essentials to do this. Humana will make sure to process electronically submitted clean claims or Medicare crossover claims within 7 business days, and within 30 calendar days for clean paper claim submissions.  It is important that required elements are completely filled out, or this may delay the processing of your claim.  If you have any claims or billing questions, please reach out to us any time at INMedicaidClaimsResearch@humana.com.

Most services rendered by an out-of-network provider require prior authorization, with some exceptions such as open access or urgent/emergency services. Please check PRIOR AUTH LIST to determine if services require a prior authorization or call Provider Services at 866-274-5888. 

If you would like to become a participating provider with Humana, please reach out to us in one of the following emails, as applicable:

    Medical services: INProviderUpdates@humana.com

    Behavioral health services: INBHMedicaid@humana.com

    Long-term services and supports: LTSSContracting@humana.com



At Humana, we strive to offer our members high-quality healthcare at affordable rates. To achieve this goal, the Humana Provider Payment Integrity (PPI) department reviews claims payments for accuracy and requests refunds if claims are overpaid or paid in error. 

Common reasons for overpayment include: 

    An issue regarding the coordination of member benefits 

    Duplicate payments 

    Fraud, waste and abuse detection 

    Incorrect provider reimbursement 

    Medical coding reviews 

    Medical record reviews 

    Member plan termination 

    Subrogation



The overpayment application on the Availity Essentials portal can help you manage overpayments. You can: 

    Manage overpayment documentation and maintain case histories electronically 

    Reduce overpayment resolution time by managing overpayment requests from multiple payers

    Request more information about or dispute an overpayment request. 

    Sign up for notifications when you have an overpayment 

    View overpayment inventory in real-time


The overpayment application is in the Availity Essentials portal under the claims and payments section. If you do not see the application, ask your organization’s Availity administrator to grant you the “Claim Status” role. 

Refund checks for overpayments can be mailed to:
Humana Healthcare Plans
P.O. Box 931655
Atlanta, GA 31193-1655

Providers can submit requests for informal claim disputes via written correspondence: 

    Through Availity Essentials, our secure provider portal 

    By mail: 

    Humana Healthy Horizons in Indiana
    Attn: Informal Dispute
    PO Box 14169
    Lexington, KY 40512-4169



    Via email: INMedicaidClaimsResearch@humana.com


Informal claim disputes must be received within 60 calendar days of the notice of Humana’s determination. For more information, contact Provider Services at 866-274-5888. 

Provider claim dispute process

If additional review is necessary, you can submit a formal dispute to Humana in writing. Humana’s Provider Relations department reviews all formal dispute requests. 

Formal disputes should be mailed to: 

Humana Healthy Horizons in Indiana
Attn: Formal Dispute
201 North Illinois Street Suite 1200 
Indianapolis, IN 46204 

Or submitted via email: IndianaFormalDispute@Humana.com.

These requests must be received within 60 calendar days, after the conclusion of the 30 calendar day informal dispute process. 

For more information about Humana’s formal dispute process, contact Provider Services at 866-274-5888.

Humana does not require authorization for Emergency Room Services.  We also do not reduce payments to treatment room charges, thus eliminating the need for any autopay lists or layperson reviews.  If you have any specific questions or concerns pertaining to this, please contact your Provider Education and Outreach Representative.

Behavioral and physical clinical coverage policies

Working with Humana

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Out-of-network claims

Payment integrity and disputes

Managing overpayments online

Informal claim dispute process:

Formal dispute process:

Emergency room services

Indiana Medicaid