RadiologyBillingSolutions is our top pick for radiology billing services in Illinois in 2026. It bills for radiology and nothing else, and it’s set up for a state where one Blue plan now sends imaging requests down three different review paths depending on the member’s coverage. Zotec Partners, Ventra Health and Coronis Health are the other radiology-heavy names here. The rest are broader billing companies that treat radiology as one specialty among several.
Illinois Medicare claims go through Jurisdiction 6, run by National Government Services, which also covers Minnesota and Wisconsin. NGS writes its own Local Coverage Determinations, so the documentation rules for a scan come from NGS, not a national default.
Medicaid is changing too. About 2.4 million of the state’s roughly 3.1 million Medicaid members are in HealthChoice Illinois plans, and in June 2026 the state picked six plans for the next contract: Aetna Better Health, Blue Cross and Blue Shield of Illinois, Humana, Meridian, Molina and, in Cook County only, CountyCare. Humana is new to the program, and the current contracts run through December 31, 2026. We looked at 11 radiology billing companies working in or near Illinois and judged them on how ready they are for both changes.
Radiology Billing Solutions has done one thing since 2010: bill for radiology. Its coders spend every day on imaging claims, from diagnostic CT, MRI, ultrasound and nuclear medicine to interventional work, where the 26/TC split and bundled guidance codes cause most of the trouble. Coding, charge entry, prior authorization, denial appeals, A/R follow-up and the ACR and IAC accreditation paperwork all stay with the same in-house team. Independent imaging centers, hospital radiology departments and interventional groups make up the client base, and the numbers are published: a 99% first-pass claim rate, a 25-day average A/R cycle and a 32% average reduction in denials.
Take: RadiologyBillingSolutions is the only radiology-only company on this list and one of the few that puts its performance in writing. It’s the same team behind our radiology billing services in Illinois.
Zotec Partners has billed for hospital-based specialties since 1998 from Carmel, Indiana. Radiology sits next to anesthesiology and emergency medicine in its core work, and most of its clients are hospitals, health systems and large groups.
Take: Zotec fits hospital radiology groups in the Chicago area better than a single outpatient center.
Ventra Health formed in 2021 and is based in Dallas. Its radiology billing comes from Advocate RCM, a radiology firm founded in 1998 that joined Ventra in January 2024.
Take: Ventra’s radiology team traces back to Advocate RCM. Ask who would handle an Illinois account day to day.
Coronis Health was formed in 2015 and is based in Sykesville, Maryland. It keeps a dedicated radiology team for diagnostic and interventional coding, revenue audits and underpayment recovery.
Take: Coronis has a real radiology team. Ask how it routes BCBSIL claims across the commercial, Medicaid and Medicare Advantage lines.
ARIA is the billing service run by CompuGroup Medical, a healthcare software company founded in Germany in 1984 with a U.S. division since 2010. It won Best in KLAS for ambulatory revenue cycle services tied to an EHR in 2024 and 2025.
Take: The KLAS awards are for ambulatory billing tied to CGM software. Ask what changes if you run a different system.
PracticeMax has billed for physician groups since 1984 from Scottsdale, Arizona, and pairs its billing service with its own practice management and EHR software.
Take: PracticeMax bills for dozens of specialties. Ask whether imaging claims get their own team.
AnnexMed has done revenue cycle work since 2004 from Salt Lake City and runs a radiology billing service built for imaging centers.
Take: AnnexMed’s imaging-center service fits outpatient groups. Nothing it publishes points to Illinois payer work, so ask.
MBW RCM began as Medical Billing Wholesalers and has been billing since at least 2010. It runs delivery centers in India and the Philippines and mostly serves larger organizations.
Take: MBW is set up for larger organizations. A single Illinois imaging center isn’t its usual client.
Medical Billers and Coders was founded in 1999 and is based in Wilmington, Delaware. It works as a nationwide network of billers and coders and lists radiology among dozens of specialties.
Take: MBC’s network reaches most states, but the coders on your account can change.
BillingParadise says it started in 2004 as a small medical billing company. It now covers eligibility checks, coding, billing, denials, A/R, credentialing and revenue reporting, with a focus on value-based care programs.
Take: A general RCM vendor with radiology on its list. Ask how it will handle the HealthChoice Illinois plan changes.
MedCloudMD was founded in 2020 and is based in Jonesboro, Arkansas. It offers billing and coding, A/R recovery, denial management, credentialing and eligibility checks for practices across the U.S.
Take: A young, smaller firm. Ask how many radiology clients it bills for today.
Worth knowing before you read a denial letter
Many insurers don't decide imaging requests themselves. They hire outside companies, called radiology benefit managers, to review CT, MRI and PET requests. Blue Cross and Blue Shield of Illinois now uses a different route depending on the member's coverage.
Advanced imaging requests go to Carelon Medical Benefits Management, formerly AIM Specialty Health.
Imaging and cardiology requests moved from eviCore to Carelon in 2025, and first-level appeals moved from eviCore to BCBSIL itself.
Since January 1, 2026, BCBSIL reviews advanced imaging requests itself instead of sending them to eviCore.
One insurer, three review paths. The member's ID card tells you the plan; the denial letter tells you who actually made the decision, and that's where the appeal goes. RadiologyBillingSolutions checks both on every Illinois denial.
Skip the price sheet for now. A vendor that sends a BCBSIL Medicaid appeal to eviCore in 2026 will lose that claim no matter how cheap it is. Here's what we'd check:
National Government Services runs Jurisdiction 6 for Illinois, Minnesota and Wisconsin. Practices that also bill across the line in Indiana deal with a different contractor in Jurisdiction 8, so keep the two rule sets apart.
Every HealthChoice Illinois plan serves the whole state except CountyCare, which only enrolls members in Cook County. Meridian also runs YouthCare, a separate plan for youth in the state’s foster care system. Billing teams need to know which of these a patient is in before the claim goes out.
BCBSIL moved its Medicaid imaging reviews to Carelon in 2025 and pulled Medicare Advantage imaging in-house on January 1, 2026. A federal rule in effect since that same date also requires Medicare Advantage, Medicaid managed care and ACA marketplace plans to decide standard prior auth requests within seven calendar days and urgent ones within 72 hours, with a specific reason for any denial. Use those deadlines when an imaging request stalls.
Bottom Line: Illinois’s payer environment leaves little room for a generalist approach; one Blue plan with three imaging review paths, a Medicaid program heading into new contracts with a new plan in the mix, and NGS’s Jurisdiction 6 rules on the Medicare side. RadiologyBillingSolutions is structured specifically for this complexity: a radiology-exclusive service model where every coder, workflow, and Illinois payer rule update is dedicated to a single discipline. That focus is reflected in verifiable outcomes, including a 99% first-pass claim rate and a 25-day average A/R cycle, figures most competitors in this market do not publish. For practices evaluating radiology billing services in Illinois, RadiologyBillingSolutions offers the clearest combination of specialization and documented performance on this list.
About this guide: Compiled from each company's own service pages and directory profiles, Blue Cross and Blue Shield of Illinois provider notices, Illinois Department of Healthcare and Family Services announcements and reports, and CMS rulemaking. Where we couldn't confirm a company detail, we left it out rather than estimate it. Last reviewed October 21, 2026.
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