Billing Service for Metro Chicago, Illinois: 5 Easy Tips
Billing service for Metro Chicago, Illinois: 5 key takeaways
A billing service for metro chicago illinois handles insurance claims for your practice so you can stay with your clients. MCM South Medical Billing Service bills mental and behavioral health claims for psychotherapists and psychiatrists in Chicago, Illinois and across Illinois.
- Pick a service that works only in mental and behavioral health, so it knows the codes and payer rules your sessions use.
- Get the scope of work in writing: verification, claim submission, denial follow-up, secondary claims and reporting.
- Ask how denied and rejected claims are worked and appealed, not just how they are sent.
- Ask how the service handles HealthChoice Illinois and private plans in Illinois, because the rules differ by payer and by state.
- Compare fees next to scope, reporting and exit terms, not on the percentage alone.
What a billing service handles for Chicago, Illinois practices
A medical billing service is a company that prepares, sends and follows up on insurance claims for a practice. For a Chicago, Illinois therapist or psychiatrist, the day-to-day work usually looks like this:
- Insurance verification: confirming benefits and eligibility before a visit.
- Electronic claims submission: sending clean claims to the payer.
- Denied and rejected claim follow-up, including appeals.
- Secondary claims and EAP (employee assistance program) claims.
- Insurance credentialing support: the paperwork that lets you bill a payer.
- Out-of-network claims for clients whose plans you are not in network with. Read our in-network vs out-of-network guide for the difference.
Scope varies by service, so ask for the list in writing. Our services page shows what MCM South covers, and the billing terms glossary defines the words you will hear.
Psychotherapy and psychiatry billing are not the same
Psychotherapists mostly bill timed psychotherapy codes such as 90791, 90834 and 90837. Psychiatrists usually bill evaluation and management (E/M) visits, often with a psychotherapy add-on code. A billing service should be able to explain both. Start with the CPT and E/M code guide if you want to see how the codes differ.
Illinois payer notes for Chicago, Illinois billing
Rules change by payer type and by state. Keep these three groups separate when you review any billing service.
Medicaid in Illinois
Illinois Medicaid managed care runs through HealthChoice Illinois, the state program that enrolls Medicaid members in managed care organizations (MCOs). For a member enrolled in a plan, the claim goes to that MCO, and each MCO sets its own authorization, credentialing and claim rules. A State of Illinois announcement lists six organizations awarded HealthChoice Illinois contracts: Aetna Better Health of Illinois, Blue Cross and Blue Shield of Illinois, Humana Benefit Plan of Illinois, Meridian Health Plan of Illinois, Molina Healthcare of Illinois and CountyCare Health Plan (Cook County only). In practice, check each member’s plan at every visit, credential with each MCO you bill, and read that plan’s provider manual (source: State of Illinois, checked October 5, 2026).
See our Illinois Medicaid billing page and the Medicaid HCPCS guide for codes.
Private insurance and Blue Cross
Blue Cross Blue Shield is a federation of independent companies, so one state’s rules do not carry over to another. Read our Illinois Blue Cross guide for this state. For other commercial plans, confirm credentialing and claim rules with each payer.
Why state rules matter
A rule that applies in Illinois may not apply in a neighboring state. A good billing service says which rules are state-specific and points you to the source.
How to compare a billing service for metro chicago illinois
Use the same five questions with every service you talk to:
- Do you bill only mental and behavioral health claims?
- What exactly is included in your fee, and what costs extra?
- How do you handle denials, appeals and secondary claims?
- What reports will I see, and how often?
- What happens if I leave: who owns the data and how long does the handoff take?
Fees come in different shapes, so compare scope first and price second. A lower rate that leaves denial follow-up to your staff may cost more than it saves. Ask how a service protects client information and keeps you in control of your own billing.
Credentialing comes first
You can only bill a payer once you are credentialed and in network with it, or choose to bill out of network. Our credentialing page and credentialing and network status guide explain the steps.
Monday-morning checklist
- List the billing tasks that eat your week.
- Write down your top payers in Illinois.
- Ask two services the five questions above.
- Request the scope, fees and exit terms in writing.
FAQ: billing service for metro chicago illinois
What should I look for in a billing service for metro chicago illinois?
Look for behavioral health experience, a written scope of services, clear reporting, and fees stated up front. Ask how the service handles denials, secondary claims and out-of-network claims for psychotherapists and psychiatrists.
What does a billing service for metro chicago illinois usually handle?
Scope varies by service. Common tasks include insurance verification, electronic claim submission, denied and rejected claim follow-up, secondary claims and credentialing support. Get the list in writing before you sign.
Does MCM South bill for practices in Chicago, Illinois?
Yes. MCM South Medical Billing Service bills mental and behavioral health claims for psychotherapists and psychiatrists, solo and group practices, in Illinois.
Does MCM South bill out-of-network claims?
Yes. MCM South bills out-of-network claims for its clients, along with in-network claims, denial follow-up and secondary claims.
How do I get a quote from MCM South?
Use the free quote page at mcmsouth.com. You can also schedule a free consultation to talk through your practice and your billing needs.
Where MCM South bills
MCM South Medical Billing Service bills mental and behavioral health claims for psychotherapists and psychiatrists in Georgia, Massachusetts, Connecticut, Texas, Florida, New York, Colorado, Tennessee, North Carolina and Illinois. See who we serve on our Who We Serve page. Source details above were checked on October 5, 2026.
Mental health billing for Metro Chicago, IL
Your Notes Are Done. Now Get Paid for Them.
Every rejected claim is revenue you already earned and haven’t collected. MCM South takes that off your desk.
- ✓ Mental and behavioral health only, since 2010
- ✓ Built for psychotherapists and psychiatrists, solo or mid-size practices
- ✓ Insurance verification, electronic claims, denial follow-up, secondary and out-of-network claims
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Serving practices in GA, MA, CT, TX, FL, NY, CO, TN, NC and IL.
