Timely filing · Medicaid managed care (Indiana)
CareSource timely filing limit
Short answer
The CareSource timely filing limit for Indiana Medicaid claims is 90 calendar days from the date of service or discharge, and the 2026 guide applies the same 90 days to participating and out-of-network providers. It covers CareSource's Healthy Indiana Plan and Hoosier Healthwise members. When another payer is primary, the claim and that payer's EOP are due within 90 calendar days of the primary EOP date.
A corrected claim gets 60 calendar days from the date of the EOP. A claim dispute is due within 60 calendar days of the written claim determination, and an appeal within 60 calendar days of the dispute decision. Compare other payers in the timely filing limits table.
Last reviewed by the Remitwright billing team. Editorial policy
The windows
- Initial claim
- 90 calendar days from the date of service or discharge, for participating and out-of-network providers1
- Counted from
- The date of service, or the discharge date. For coordination of benefits, the date on the primary payer's EOP. For a corrected claim, the date of the EOP on the original claim.
- Appeal
- 60 calendar days from the written claim determination to file a claim dispute, then 60 calendar days from the dispute decision to file an appeal
- Corrected claim
- 60 calendar days from the date of the EOP, according to the timely filing table in CareSource's 2026 Indiana guide. The adjustments slide in the same guide says to submit corrected or replacement claims within 90 calendar days of the date of service or discharge, so file by whichever of the two dates comes first.
- Verified
- , against the payer document in the sources
Your participation agreement can set a different window. Where the contract and the manual disagree, the contract applies.
A visit on Monday, March 2, 2026
Counting 90 days forward from a date of service of Monday, March 2, 2026 gives Sunday, May 31, 2026. That is the last day to file under the first limit shown above; a claim filed after it is outside the window unless one of the exceptions below applies.
Exceptions the payer allows
Retroactive member eligibility
When a member's eligibility is established retroactively, the filing limit is extended to one year from the date eligibility was established. CareSource's 2023 Indiana training says a claim denied for timely filing in this situation has to go through a claim dispute.
Newborns with retroactive coverage
Claims for newborns in their first 30 days of life follow the same filing limits as any other member. Timely filing requirements do not apply to a newborn who receives retroactive coverage.
Another payer is primary
Bill the commercial plan or Medicare first, because Medicaid pays last. The CareSource claim and the primary payer's EOP then have to arrive within 90 calendar days of the primary EOP date. If the EOP was missing from the first claim, attach it and resubmit as a corrected claim inside that window.
What counts as proof of timely filing
- For a timely filing appeal, proof of the original receipt by fax or EDI, which CareSource's 2023 Indiana training says must be sent with the appeal
- For a coordination of benefits claim, the primary payer's EOP attached to the claim, which dates the start of the 90 days
- For a corrected claim, the EOP on the original claim, whose date starts the 60-day correction window
Notes for billers
- The CareSource Medicaid payer ID for Indiana is INCS1. Paper claims go to CareSource, Attn: Claims Department, P.O. Box 3607, Dayton, OH 45401.
- A rejected claim failed the front-end edits and was never processed: fix it and send it as a new claim, still inside the filing limit. A voided claim cannot be disputed or appealed, and the resubmitted claim still counts against the timely filing window.
- A dispute is the first formal review and excludes medical necessity denials. CareSource has 30 calendar days to uphold or overturn it. An appeal is the second review and is allowed only after the dispute; CareSource has 45 calendar days to decide, and an appeal not resolved in that time is treated as approved.
- CareSource's 2023 Indiana training listed 180 calendar days for out-of-network providers. The October 2026 guide lists 90 days for both participating and out-of-network providers, so file to 90 days whichever side of the network you are on.
- These limits apply to CareSource's Indiana Medicaid members (Healthy Indiana Plan and Hoosier Healthwise). CareSource plans in other states, such as CareSource Ohio, set their own limits under their own state's rules. The IHCP Claim Submission and Processing module says managed care claims are submitted to and processed by the member's managed care entity, and points providers to that entity's own manual rather than the fee-for-service rules.
- CareSource's 2026 Indiana guide tells providers never to bill members for covered Medicaid services and never to balance bill them.
FAQ
Questions about CareSource deadlines
What is CareSource's timely filing limit for Indiana Medicaid?
How long do I have to send a corrected claim to CareSource?
What are the CareSource dispute and appeal deadlines?
How does timely filing work when CareSource is secondary?
The member's coverage was made retroactive. Do I lose the claim?
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