Illinois Medicaid dental runs on two tracks: fee-for-service dental administered by DentaQuest, and HealthChoice Illinois managed care dental administered by each plan's dental subcontractor (Molina uses Avesis, others use DentaQuest). The first billing step is always knowing which track and administrator a patient is on. Here is how to tell, and how enrollment, claims, and denials work.
Last updated October 2026 · Reviewed by the PracticeAlpha billing team · Source: Illinois HFS and DentaQuest Illinois provider materials
Get a free AR analysisThe 30-second answer: Illinois Medicaid dental runs on two tracks. Fee-for-service members' dental is administered by DentaQuest. HealthChoice Illinois managed care members' dental is administered by their health plan's dental subcontractor, for example Molina uses Avesis, while several other plans use DentaQuest. The first step in Illinois is always figuring out which track and which administrator a patient falls under, because billing the wrong one is an automatic denial. Children have comprehensive coverage; adults 21+ have restorative coverage.
Illinois is a dual-track state. If a member is in traditional fee-for-service Medicaid (Medical Assistance) or All Kids, their dental is administered by DentaQuest. If a member is in a HealthChoice Illinois managed care plan, their dental is administered by that plan's dental subcontractor. The subcontractor varies by plan, Molina uses Avesis, while several HealthChoice plans use DentaQuest, so the administrator depends on the patient's specific plan.
This is what makes Illinois harder to bill than a single-administrator state. The same procedure for two Medicaid patients can go to two different administrators with different portals, fee schedules, and rules. Treating all Illinois Medicaid dental the same is a reliable way to generate denials.
Fee-for-service (DentaQuest). Members not enrolled in a managed care plan have their dental administered by DentaQuest for Illinois Medical Assistance and All Kids.
HealthChoice Illinois managed care (plan's subcontractor). Most Illinois Medicaid members are in a HealthChoice plan. Each plan carries its own dental subcontractor, so you confirm the member's plan first, then route dental to that plan's dental administrator.
The practical step: verify the member's exact Medicaid plan before the visit, then confirm which dental administrator that plan uses. That one check decides where eligibility, pre-auth, and the claim go. Guessing is the most common Illinois error.
Children (under 21) have comprehensive dental: exams, cleanings, x-rays, fluoride, sealants, fillings, crowns, root canals, extractions, and medically necessary orthodontics with approval.
Adults 21 and older have restorative dental coverage under Illinois Medicaid. Confirm the exact covered services and any limits with the patient's dental administrator, since the managed care plans can differ at the edges even within the state benefit.
Enroll with the state, then with each dental administrator you will bill. You enroll as an Illinois Medicaid provider through IMPACT, and you also need to be set up with DentaQuest for fee-for-service and with the dental subcontractors of the HealthChoice plans whose members you see (for example Avesis for Molina).
Because the administrator depends on the plan, a practice that sees a mix of Illinois Medicaid patients has to maintain more than one dental enrollment. Keeping each current, and each provider and location active, is what keeps claims from bouncing.
Route the claim to the right administrator. Confirm the member's plan and dental administrator, verify eligibility and remaining benefits there, submit any required pre-authorization, then file the claim with that administrator (DentaQuest for fee-for-service, or the plan's subcontractor for managed care).
Attach what the service requires and respect frequency and age limits. File inside the administrator's timely-filing window; a late Medicaid claim usually cannot be billed to the patient.
Billed to the wrong administrator. The signature Illinois mistake, sending a managed care member's claim to DentaQuest fee-for-service or vice versa.
Eligibility gaps and plan changes. Members move between plans; verify the current plan and administrator before every visit.
Frequency, age, and documentation. Services past a limit, or without the required attachments or pre-authorization, are denied.
Verification in Illinois is a two-part check. First confirm the member's current Medicaid plan, fee-for-service or a specific HealthChoice managed care plan, because members move between plans and the plan decides the dental administrator. Then verify eligibility and remaining benefits with that administrator (DentaQuest for fee-for-service, or the plan's dental subcontractor).
Do this before every visit, not just at intake. A plan change the practice did not catch is how an Illinois claim ends up at the wrong administrator and gets denied. Loading the correct administrator, eligibility, frequency, and any pre-authorization before the patient sits down is what keeps the claim clean.
The dual-track model is the Illinois trap. The work is not the procedure, it is correctly identifying each patient's plan and dental administrator and routing eligibility, pre-auth, and claims to the right place, every time, across DentaQuest and multiple managed care subcontractors.
We verify each Illinois Medicaid patient's plan and administrator before the visit, maintain the enrollments, submit clean to the correct administrator, and work denials. A free AR analysis shows where your Illinois Medicaid dollars are leaking.
Billing Illinois Medicaid across DentaQuest fee-for-service and HealthChoice managed care subcontractors, and losing claims to the wrong administrator? We identify the right track per patient, submit clean, and work every denial. See what your Medicaid AR is leaking.
Get a free AR analysisIllinois is dual-track. Fee-for-service members' dental is administered by DentaQuest for Illinois Medical Assistance and All Kids. HealthChoice Illinois managed care members' dental is administered by their health plan's dental subcontractor, which varies by plan, for example Molina uses Avesis while several plans use DentaQuest.
Verify the member's exact Medicaid plan before the visit, then confirm which dental administrator that plan uses. Fee-for-service goes to DentaQuest; a HealthChoice managed care member goes to that plan's dental subcontractor. That one check decides where eligibility, pre-authorization, and the claim go.
Yes. Children under 21 have comprehensive dental, and adults 21 and older have restorative dental coverage under Illinois Medicaid. Confirm the exact covered services and limits with the patient's dental administrator, since managed care plans can differ at the edges.
Enroll as an Illinois Medicaid provider through IMPACT, then set up with each dental administrator you will bill: DentaQuest for fee-for-service, and the dental subcontractors of the HealthChoice plans whose members you see (such as Avesis for Molina). A mixed Medicaid patient base means maintaining more than one dental enrollment.
The most common reason is billing the wrong administrator, sending a managed care member's claim to DentaQuest fee-for-service or vice versa. Others are eligibility gaps and plan changes, frequency and age limits, and missing documentation or pre-authorization. Verifying the current plan and administrator before each visit prevents most.