Anesthesia billing · Illinois
Anesthesia billing in Illinois
Billing for independent CRNA and anesthesia groups in Illinois: coding, claims, denials, payments and credentialing, with a monthly scorecard you can actually read.
The market in Illinois
Anesthesia groups in Illinois at a glance
Source: our analysis of CMS Medicare enrollment and reassignment data (2024). Groups are counted where CRNAs reassign Medicare payments to them.
Illinois at a glance
What shapes anesthesia billing here
Illinois hasn't opted out of Medicare's physician supervision requirement, so for Medicare purposes CRNAs here work under the supervision of the operating practitioner or an anesthesiologist. Supervision isn't the same as medical direction, though, and that distinction drives the billing. When an anesthesiologist medically directs a case, the CRNA bills with QX and the payment is split. When nobody is medically directing, even with a surgeon supervising, the CRNA's service is billed with QZ.
Groups in Illinois often run a mix of both on the same day, which is exactly where modifier mistakes happen. State law and facility bylaws can add their own rules on top of Medicare's, so the billing has to follow what actually happened in each case.
- Medicare supervision: not opted out, so physician supervision applies for Medicare
- Medicare Part B contractor: NGS (Jurisdiction 6)
- Medicaid program: Illinois Medicaid (HealthChoice Illinois)
- Employed CRNAs: about 1,140 (BLS, May 2025), not counting self-employed and 1099 CRNAs
- Average CRNA pay: $251,600 a year for employed CRNAs (BLS, May 2025)
How we help Illinois groups
Everything between the anesthesia record and your account
Medicare and Illinois Medicaid
Claims built for NGS and Illinois Medicaid, with the modifiers that match how each case was staffed and time reported the way each payer wants it.
Commercial payers
Your contracts loaded so every payment is checked, including rules for time units, physical status and qualifying circumstances.
Care-team practices
Medical direction documented and billed correctly, so the anesthesiologist and CRNA claims match and neither side is short-paid. See the seven medical direction requirements.
Enrollment and credentialing
New providers enrolled with NGS, Illinois Medicaid and commercial plans, with revalidation dates tracked so nothing lapses.
Looking for an anesthesia billing company in Illinois? Start with a free billing review.
Also serving nearby: Iowa · Minnesota · Wisconsin · Michigan · Ohio. See all states.
- Supervision opt-out status: Becker's ASC Review (2026)
- CRNA employment and pay: BLS Occupational Employment and Wage Statistics, nurse anesthetists, May 2025
- Medicare contractor: CMS MAC directory; confirm your contractor before filing