Medical Billing Services in Illinois
Practices in Illinois work against three hard clocks: the Illinois Department of Healthcare and Family Services' 180-day filing deadline for non-institutional Medicaid claims, each commercial plan's appeal deadline, and the state prompt-payment statute. That statute is section 368a of the Illinois Insurance Code (215 ILCS 5/368a, "Timely payment for health care services"): payors must pay claims for health care services within 30 days after receipt of due written proof of loss, and failure to pay in that period entitles the payee to interest at 9% per year from the 30th day to the date of late payment. Miss a filing window and the revenue is gone — the appeal path closes behind you. Our billing team is remote, with no Illinois office, and builds Illinois-specific workflows around these rules: payer-level edits, health-plan portal automation, and appeals templates tuned to how Illinois plans actually adjudicate. Statute text and the HFS filing deadline were verified on 17 September 2026.
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The Illinois Billing Landscape
Illinois runs one of the largest Medicaid programs in the country, with about 2.94 million people enrolled in Medicaid and CHIP as of May 2026 and most of them in managed care. The HealthChoice Illinois health plans are Aetna Better Health of Illinois, Blue Cross Community Health Plans, CountyCare Health Plan (Cook County only), Meridian Health Plan and Molina Healthcare, with YouthCare as the statewide specialised plan for DCFS youth in care. Note the distinction billers get wrong: the Medicaid plan is Blue Cross Community Health Plans, not Blue Cross Blue Shield of Illinois, and the two carry different provider requirements. On the commercial side BCBSIL, UnitedHealthcare, Aetna and Cigna carry the bulk of claim volume; we do not publish market-share percentages we cannot source. The state's prompt-payment rule is section 368a of the Illinois Insurance Code: payment within 30 days after receipt of due written proof of loss, and 9% annual interest from the 30th day when a payor is late — interest and Department enforcement, not statutory damages. Filing deadlines are the other trap: HFS sets 180 days from the date of service for non-institutional Medicaid claims, with published exceptions (Medicare crossovers at two years, local education agencies at 18 months, and others), so a 12-month assumption carried over from another state will age claims out. Chicago's market is competitive, with Northwestern, Rush, Advocate and University of Chicago systems shaping contracting, while downstate practices face physician shortages and a heavier Medicare and Medicaid mix. Behavioral health billing has grown more complex as Illinois expanded Medicaid behavioral health coverage and implemented the Certified Community Behavioral Health Clinic model. Plan list, statute and filing deadline verified against HFS, the Illinois enrollment site and the Illinois General Assembly on 17 September 2026.
Who We Serve in Illinois
Our Illinois client mix skews toward solo practices, group practices, multi-specialty clinics , plus federally qualified health centers and telehealth providers. We work with providers in Chicago, Aurora, Naperville and across the rest of the state, all remotely.
Major Metros Served
What billing costs in Illinois
We publish one national rate card and bill Illinois practices on exactly the same terms as everywhere else — there is no regional markup and no quote-only tier below enterprise. You pay a percentage of what we actually collect, so if we do not collect, you do not pay.
| Practice size | Rate | Basis | Note |
|---|---|---|---|
| Solo practice | 7.0% | of monthly collections | Monthly minimum applies |
| Group practice | 6.0% | of monthly collections | Volume discounts available |
| Enterprise | Custom | tiered pricing | Scoped per engagement |
- No setup or implementation fee
- No per-claim charge
- No software fee and no markup on third-party costs — clearinghouse fees, postage and payer application fees are passed through at cost
- 12-month initial term, then month-to-month — 60 days' notice either way, no early-termination penalty
Payer Landscape in Illinois
HealthChoice Illinois (Medicaid managed care) routes members through Aetna Better Health of Illinois, Blue Cross Community Health Plans, CountyCare Health Plan (Cook County only) and 3 more plans, each with its own authorization rules and fee schedule. On the commercial side, Blue Cross Blue Shield of Illinois, UnitedHealthcare, Aetna drive the bulk of Illinois claim volume, so we maintain payer-specific denial playbooks and appeal templates for each. Claim clocks in Illinois run 180 days for Medicaid and 90-180 days for commercial payers — deadlines our A/R queues are built around. Illinois's prompt-pay statute: 215 ILCS 5/368a ("Timely payment for health care services") requires insurers, HMOs, managed care plans, health care plans, preferred provider organizations and third party administrators to pay claims for health care services within 30 days after receipt of due written proof of loss. Failure to pay in that period entitles the payee to interest at 9% per year from the 30th day to the date of late payment; interest under $1 need not be paid, and any interest owed is payable within 30 days after the payment. Text verified against the Illinois General Assembly's published section on 17 September 2026.
Medicaid Program
HealthChoice Illinois (Medicaid managed care)
Managed Care Organizations
Key Commercial Payers
Timely Filing Deadlines
Prompt Pay Law
215 ILCS 5/368a ("Timely payment for health care services") requires insurers, HMOs, managed care plans, health care plans, preferred provider organizations and third party administrators to pay claims for health care services within 30 days after receipt of due written proof of loss. Failure to pay in that period entitles the payee to interest at 9% per year from the 30th day to the date of late payment; interest under $1 need not be paid, and any interest owed is payable within 30 days after the payment. Text verified against the Illinois General Assembly's published section on 17 September 2026.
Illinois Billing Regulations & Compliance
The Illinois Department of Insurance sets the rules our Illinois billing workflows have to satisfy. Surprise billing in Illinois: Illinois House Bill 4703, enacted as Public Act 102-0901 effective 1 July 2022, adds state-level balance-billing protections and an Illinois dispute process alongside the federal No Surprises Act. Act and effective date verified on the Illinois General Assembly site, 17 September 2026. Telehealth parity: 215 ILCS 5/356z.22 requires individual and group accident or health policies to cover telehealth services, e-visits and virtual check-ins in the same manner as other covered benefits, with cost-sharing no higher than for the same service in person. Subsection (d) also requires in-network telehealth delivered through an interactive telecommunications system to be reimbursed at the in-person rate — but that rate-parity subsection is inoperative on and after 1 January 2028 except for mental health and substance use disorder telehealth. The section's definition of telehealth excludes store-and-forward, remote patient monitoring, e-visits and virtual check-ins. Verified 17 September 2026.
State Insurance Regulator
Illinois Department of Insurance
Surprise Billing Protection
Illinois House Bill 4703, enacted as Public Act 102-0901 effective 1 July 2022, adds state-level balance-billing protections and an Illinois dispute process alongside the federal No Surprises Act. Act and effective date verified on the Illinois General Assembly site, 17 September 2026.
Telehealth Billing Parity
215 ILCS 5/356z.22 requires individual and group accident or health policies to cover telehealth services, e-visits and virtual check-ins in the same manner as other covered benefits, with cost-sharing no higher than for the same service in person. Subsection (d) also requires in-network telehealth delivered through an interactive telecommunications system to be reimbursed at the in-person rate — but that rate-parity subsection is inoperative on and after 1 January 2028 except for mental health and substance use disorder telehealth. The section's definition of telehealth excludes store-and-forward, remote patient monitoring, e-visits and virtual check-ins. Verified 17 September 2026.
Common Questions
Common questions about medical billing services in Illinois.
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Get a Free Billing AuditDoes MedPrecision handle HealthChoice Illinois health plan billing?
Yes. We bill the HealthChoice Illinois health plans — Aetna Better Health of Illinois, Blue Cross Community Health Plans, CountyCare Health Plan in Cook County, Meridian Health Plan and Molina Healthcare — plus YouthCare for DCFS youth in care, and we stay current on each plan's authorization requirements, fee schedules and submission rules. Plan list confirmed against the state's HealthChoice Illinois pages on 17 September 2026.
How do payer dynamics differ between Cook County and downstate Illinois?
Cook County has CountyCare as an additional Medicaid MCO option and a dense commercial payer market, while downstate practices often deal with a narrower payer mix and more Medicare and Medicaid volume. Our team adapts billing strategies to your specific market to ensure optimal collections.
How does MedPrecision handle Illinois prompt pay law compliance?
Section 368a of the Illinois Insurance Code requires payment within 30 days after receipt of due written proof of loss, and it reaches insurers, HMOs, managed care plans, health care plans, preferred provider organizations and third party administrators. Our team submits clean claims on first pass and tracks payment timelines against that 30-day mark, so a late payer can be escalated and, where appropriate, reported to the Illinois Department of Insurance.
What specialties does MedPrecision support in Illinois?
We support a wide range of specialties across Illinois, including family practice, behavioral health, cardiology, dermatology, physical therapy, urgent care, and more. Our billers are trained on specialty-specific coding for both HealthChoice Illinois MCOs and commercial payers.
What happens if a payer misses the Illinois prompt-pay deadline?
215 ILCS 5/368a requires payment within 30 days after receipt of due written proof of loss, and failure to pay in that period entitles the payee to interest at 9% per year from the 30th day to the date of late payment. Whether a particular plan is covered depends on what it is — the section lists insurers, HMOs, managed care plans, health care plans, preferred provider organizations and third party administrators, and a self-funded ERISA plan is governed federally instead — so confirm the position for your payer mix. We track every clean claim against that deadline, flag stalled payments in the A/R report, and escalate to the Illinois Department of Insurance where that is the right route. On the filing side, HFS allows 180 days from the date of service for non-institutional Medicaid claims (with published exceptions) and commercial limits commonly run 90 to 180 days. Verified 17 September 2026.
Services for Illinois practices
Specialties we bill for
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Services in Illinois
Specialties in Illinois
Other Locations We Serve
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