Rehab Cost in Illinois: 2026 Treatment Cost Guide
Illinois faces a significant addiction crisis concentrated heavily in the Chicago metropolitan area. In 2023, the state recorded 3,502 drug overdose deaths, with opioids responsible for 2,855 fatalities. Among opioid deaths, fentanyl and synthetic opioids were involved in a staggering 92%. Cook County alone accounted for 1,540 opioid overdose deaths — nearly 44% of the state total.
The encouraging news: Illinois saw an 8.3% decline in overdose deaths in 2023, the first annual reduction since 2018, outpacing the national decline of 3%. The state has invested heavily in treatment infrastructure through the Division of Substance Use Prevention and Recovery (SUPR), which funds and licenses more than 900 treatment facilities across 163+ organizations. Combined with Medicaid expansion and a below-average uninsured rate of 6.1%, Illinois provides substantial treatment access. This guide covers what treatment costs, what insurance pays, and how to access affordable care in Illinois.
Rehab Costs in Illinois: 2026 Overview
| Treatment Type | Without Insurance | With PPO Insurance | Duration |
|---|---|---|---|
| Medical Detox | $2,500 – $10,000 | $1,000 – $4,500 | 5-14 days |
| Inpatient Rehab (Standard) | $15,000 – $28,000 | $5,000 – $13,000 | 30 days |
| Inpatient Rehab (Mid-Tier) | $28,000 – $45,000 | $12,000 – $20,000 | 30 days |
| Luxury/Executive Programs (Chicago) | $45,000 – $80,000+ | $16,000 – $35,000 | 30 days |
| Partial Hospitalization (PHP) | $5,000 – $16,000 | $2,000 – $7,000 | per month |
| Intensive Outpatient (IOP) | $4,000 – $10,000 | $1,500 – $5,000 | per month |
| Standard Outpatient | $1,500 – $6,000 | $400 – $2,500 | per month |
| Medication-Assisted Treatment | $250 – $850/month | $25 – $225/month | ongoing |
| Sober Living (Illinois) | $600 – $3,000/month | typically not covered | ongoing |
Source: National Center on Addiction and Substance Abuse; Illinois facility-reported data aggregated by ClearCostRecovery, 2026.
Illinois treatment costs split dramatically between the Chicago metro area and downstate. Chicago and the North Shore/collar county suburbs are among the most expensive treatment markets in the Midwest, while cities like Springfield, Peoria, Champaign, and Rockford offer pricing 30-50% below Chicago levels. Overall, Illinois is a mid-range state for treatment costs.
Illinois Treatment Landscape
Illinois operates a comprehensive addiction treatment system through the Department of Human Services, Division of Substance Use Prevention and Recovery (SUPR). More than 900 SUPR-licensed facilities across 163+ funded organizations serve hundreds of thousands of individuals annually, providing care across all levels from prevention through long-term recovery support.
Distribution of Treatment Facilities by Region
Chicago (Cook County): The largest treatment market in the state with approximately 300+ facilities. Cook County’s 1,540 opioid overdose deaths in 2023 drive enormous demand. The city has a mix of academic medical programs (Rush, Northwestern, UChicago), large nonprofit providers (Gateway Foundation, Haymarket Center), and community-based organizations. West and South Side neighborhoods are disproportionately affected.
Suburban Chicago (DuPage, Lake, Will, Kane, McHenry): Approximately 200 facilities serving the collar counties. Growing market with both residential campuses and community outpatient programs. Linden Oaks and AMITA Health are major providers. Costs intermediate between Chicago and downstate.
Rockford/Northern Illinois (Winnebago, Boone, DeKalb): Approximately 50 facilities. Rosecrance is a major regional provider. More affordable than the Chicago market.
Springfield/Central Illinois (Sangamon, Macon, McLean): Approximately 60 facilities. State capital region with moderate treatment infrastructure. Gateway Foundation and Memorial Health System are key providers.
Peoria/Quad Cities (Peoria, Rock Island, Tazewell): Approximately 40 facilities. Growing market serving communities affected by rising methamphetamine and fentanyl use.
Southern Illinois (St. Clair, Madison, Jackson): Approximately 45 facilities serving communities along the Mississippi River and rural Southern Illinois. Treatment access challenges in Appalachian communities. Gateway Foundation has a strong presence.
Rural Illinois: Limited treatment infrastructure outside metro areas. Telehealth has expanded access, and SUPR-funded providers serve as regional hubs for surrounding counties.
Key Illinois Treatment Regulations
SUPR Licensing and Certification: All addiction treatment facilities must be licensed by IDHS/SUPR. Certification is required for Medicaid billing eligibility. SUPR standards cover staffing qualifications, treatment protocols, patient rights, and quality monitoring.
SUPR-Funded Safety Net: More than 163 SUPR-funded organizations ensure treatment access for uninsured and underinsured individuals. This safety net extends across all regions, including rural areas with limited private treatment options.
Illinois Helpline: The state operates a dedicated helpline (1-833-234-6343) for opioids and other substances, providing 24/7 free referrals to treatment, recovery support, and harm reduction services.
Mental Health Parity: Illinois Department of Insurance enforces both state and federal parity laws requiring addiction treatment benefits to match medical/surgical benefits.
Insurance Coverage in Illinois
Illinois has an uninsured rate of 6.1% (U.S. Census Bureau, 2023), below the national average of 7.9%. Medicaid expansion and a strong employer insurance market provide broad access to addiction treatment.
Major Insurance Carriers in Illinois
Blue Cross Blue Shield of Illinois — Largest carrier in the state with millions of members. Extensive network covering most SUPR-licensed facilities. Strong coverage for residential and outpatient addiction treatment.
UnitedHealthcare — Major employer and Medicare Advantage presence. Optum manages behavioral health benefits with broad provider networks.
Aetna — Strong PPO coverage with national network. Covers residential treatment at 70-80% after deductible.
Cigna — Significant employer plan market share. Evernorth manages behavioral health with generally good MAT coverage.
Humana — Medicare Advantage and employer plan presence. Covers addiction treatment for qualifying beneficiaries.
Molina Healthcare — Major Medicaid managed care plan. Covers all levels of addiction treatment for qualifying members.
CountyCare (Cook County) — Medicaid managed care plan serving Cook County residents. Extensive behavioral health provider network.
What Insurance Covers in Illinois
Under federal and Illinois state law, your health insurance must cover:
- Inpatient/residential treatment (all ASAM levels)
- Medical detoxification
- Partial hospitalization (ASAM Level 2.5)
- Intensive outpatient (ASAM Level 2.1)
- Standard outpatient therapy
- Medication-assisted treatment (Suboxone, methadone, naltrexone)
- Psychiatric care for co-occurring disorders
- Family therapy and counseling
- Peer recovery support services
Illinois Medicaid Coverage
Illinois expanded Medicaid under the ACA, covering adults earning up to 138% of the federal poverty level. Approximately 3.6 million Illinoisans are enrolled in Medicaid, making it a critical payer for addiction treatment.
What Medicaid Covers:
- Residential treatment (SUPR-certified providers)
- Intensive outpatient programs
- Standard outpatient counseling
- Medical detoxification
- All FDA-approved MAT medications
- Recovery support services
- Case management
How to Apply: Visit abe.illinois.gov or call the Illinois Medicaid Hotline at 1-800-226-0768.
Free and Low-Cost Treatment Options in Illinois
SUPR-Funded Providers
More than 163 IDHS/SUPR-funded organizations across 900+ licensed facilities provide treatment for uninsured and underinsured individuals throughout Illinois. Services include:
- Free or sliding-scale outpatient counseling
- Residential treatment for qualifying individuals
- Medication-assisted treatment
- Recovery support and case management
- Prevention and intervention programs
How to Access: Call the Illinois Helpline at 1-833-234-6343 (24/7, free and confidential).
Faith-Based and Nonprofit Programs
Salvation Army Adult Rehabilitation Centers — Free residential recovery programs including the Central Chicago ARC. Locations in Chicago, Peoria, and other cities. Work-therapy model with vocational training.
Chicago Harbor Light Center — Free inpatient and outpatient treatment for adults. Part of the Salvation Army network.
Haymarket Center — One of Chicago’s largest nonprofit treatment providers offering comprehensive services including residential, outpatient, and specialized programs. Sliding-scale fees.
Gateway Foundation — Illinois’s largest nonprofit treatment provider with 15+ locations statewide. Accepts Medicaid and offers financial assistance.
Rosecrance — Major nonprofit in Northern Illinois with residential and outpatient programs. Accepts Medicaid and offers sliding-scale fees.
Community Health Centers
Illinois has 50+ FQHCs offering addiction services on sliding fee scales:
- Erie Family Health Centers (Chicago)
- Heartland Health Centers (Chicago)
- Community Health Partnership (Central Illinois)
- Southern Illinois Healthcare Foundation (Southern IL)
- Aunt Martha’s Health & Wellness (South suburbs)
Detox Costs in Illinois
Alcohol Detox: $400-$1,000 per day ($2,800-$14,000 for 7-14 days). Alcohol withdrawal is medically dangerous, requiring 24/7 monitoring for seizures and delirium tremens.
Opioid Detox: $300-$800 per day ($2,100-$8,000 for 7-10 days). With fentanyl involved in 92% of opioid deaths, extended buprenorphine induction protocols are increasingly standard in Illinois facilities.
Benzodiazepine Detox: $400-$1,000 per day ($5,600-$14,000+ for 14+ days). Slow taper required with prolonged seizure monitoring.
Stimulant Detox: $250-$600 per day ($1,250-$4,200 for 5-7 days). Psychiatric monitoring essential for depression and suicidal ideation.
Most insurance covers medical detox at 80-100%. Medicaid covers detox with minimal or no copay. SUPR-funded providers offer state-funded detox for uninsured individuals.
Medication-Assisted Treatment (MAT) Costs in Illinois
Suboxone/Buprenorphine:
- Without insurance: $350-$800/month
- With insurance: $25-$225/month
- Illinois has 3,500+ licensed buprenorphine prescribers
Methadone:
- Without insurance: $300-$550/month
- With insurance: $50-$200/month
- Approximately 75 licensed opioid treatment programs (OTPs)
Naltrexone/Vivitrol:
- Oral naltrexone: $50-$150/month without insurance, $10-$50 with insurance
- Vivitrol injection: $1,300-$1,700/month without insurance, $0-$300 with insurance
Illinois Medicaid covers all FDA-approved MAT medications, supporting broad access for low-income individuals.
Choosing the Right Rehab in Illinois
With 900+ licensed facilities, informed selection is essential:
Verify SUPR Licensing: Only use IDHS/SUPR-licensed providers. Search the SUPR provider directory at dhs.state.il.us.
Accreditation: Look for Joint Commission, CARF, or COA accreditation beyond state licensing.
Evidence-Based Practices: Quality programs offer CBT, DBT, motivational interviewing, trauma-informed care, and MAT when clinically appropriate.
Call the Illinois Helpline: 1-833-234-6343 for free, confidential guidance on finding appropriate treatment.
Insurance Verification: Request written benefits verification before admission.
Illinois Addiction Crisis by the Numbers
Overdose Trends:
- 2018: 2,766 deaths (pre-fentanyl surge)
- 2021: 3,841 deaths (pandemic peak)
- 2022: 3,819 deaths
- 2023: 3,502 deaths (8.3% decline — first drop since 2018)
Cook County Impact:
- 1,540 opioid overdose deaths in 2023 (44% of state total)
- 90% involved fentanyl
- 2024 preliminary: 1,026 opioid deaths (significant decline)
- 87% fentanyl involvement in 2024
Substances of Concern:
- Fentanyl/synthetic opioids: 92% of opioid overdose deaths
- Xylazine: 249 deaths in 2023 (+6.4% increase)
- Cocaine: Significant presence, often mixed with fentanyl
- Methamphetamine: Rising in downstate/rural communities
- Heroin: Declining as fentanyl dominates supply
- Alcohol: Most common substance use disorder statewide
Illinois Addiction Resources
Crisis Hotlines:
- Illinois Helpline (Opioids & Other Substances): 1-833-234-6343
- SAMHSA National Helpline: 1-800-662-4357
- 988 Suicide & Crisis Lifeline: 988
- Crisis Text Line: Text HOME to 741741
State Agencies:
- IDHS/SUPR: dhs.state.il.us
- IL Dept of Public Health (Opioid Dashboard): dph.illinois.gov
- Get Covered Illinois: getcovered.illinois.gov
Recovery Support:
- AA Illinois: Multiple area committees with thousands of meetings
- NA Illinois: Active chapters statewide
- SMART Recovery: Multiple Illinois locations
- Illinois Alliance for Recovery Support
Sources
- Illinois Department of Public Health, Semiannual Overdose Report, 2023.
- Cook County Medical Examiner, Opioid Overdose Deaths Report, 2023-2024.
- IDHS Division of Substance Use Prevention and Recovery (SUPR), 2026.
- U.S. Census Bureau, American Community Survey, 2023.
- SAMHSA Treatment Locator, Illinois, 2026.
- National Center on Addiction and Substance Abuse, 2025.
You May Qualify for Coverage That Pays for treatment in Illinois
Under the Affordable Care Act, all marketplace health insurance plans must cover addiction treatment as an essential health benefit. Monthly premiums for a PPO plan that covers rehab typically range from $350 to $700 — a fraction of the cost of paying out of pocket.
A licensed insurance specialist can help you find the right plan, check for qualifying life events, and get covered — often within days.
Talk to an Insurance Specialist — Free & ConfidentialIllinois Crisis Resources
Illinois Helpline for Opioids and Other Substances: 1-833-234-6343
Illinois Department of Human Services, Division of Substance Use Prevention and Recovery (SUPR): https://www.dhs.state.il.us/page.aspx?item=32300
SAMHSA National Helpline: 1-800-662-4357
Frequently Asked Questions
How much does rehab cost in Illinois?
Rehab in Illinois costs between $7,000 and $70,000 for a 30-90 day inpatient program without insurance, with the overall average treatment cost at approximately $56,666. With PPO insurance, out-of-pocket costs typically range from $5,000 to $20,000. Chicago and suburban programs are the most expensive, while downstate and rural Illinois facilities offer more moderate pricing. Outpatient programs average around $6,000 for a full course of treatment.
How much does a full rehab program cost in Illinois?
A complete treatment episode in Illinois including all phases costs $20,000-$80,000 without insurance. This typically includes medical detox ($2,500-$10,000 for 5-14 days), inpatient rehab ($15,000-$50,000 for 30 days), intensive outpatient ($4,000-$10,000 for 8-12 weeks), and standard outpatient therapy ($1,500-$6,000 for 3-6 months). Medication-assisted treatment adds approximately $4,500 annually. With insurance or Medicaid, out-of-pocket costs range from minimal to $20,000.
Does insurance cover drug rehab in Illinois?
Yes. All health insurance plans sold in Illinois must cover substance use disorder treatment as an essential health benefit. Illinois has strong parity protections — the state's mental health parity law and the federal MHPAEA require insurers to cover addiction treatment at the same level as medical/surgical benefits. Illinois Medicaid also covers residential, IOP, and outpatient addiction treatment through IDHS/SUPR-certified providers.
Does Illinois Medicaid cover drug rehab?
Yes. Illinois expanded Medicaid under the ACA, covering adults earning up to 138% of the federal poverty level. Illinois Medicaid (Medical Assistance) covers substance use disorder treatment including residential rehab, intensive outpatient, standard outpatient, medical detox, and medication-assisted treatment. Organizations must be certified by IDHS/SUPR and enrolled with the Department of Healthcare and Family Services (HFS) for Medicaid reimbursement. Approximately 3.6 million Illinoisans are enrolled in Medicaid.
How much is inpatient rehab in Illinois?
Inpatient rehab in Illinois ranges from $7,000 to $70,000 for 30-90 days without insurance. Programs in Chicago and the North Shore charge $30,000-$70,000+ for mid-tier to luxury options. Suburban programs in the collar counties (DuPage, Lake, Will) run $20,000-$40,000. Downstate programs in Springfield, Peoria, and Champaign offer more affordable options at $15,000-$28,000. With insurance, out-of-pocket costs depend on deductible and coinsurance, typically $5,000-$20,000.
Are there free rehabs in Illinois?
Yes, Illinois has extensive free and low-cost options. More than 163 IDHS/SUPR funded organizations across 900+ licensed facilities provide treatment for uninsured and underinsured individuals. The Central Chicago Salvation Army Adult Rehabilitation Center provides no-cost residential recovery. Chicago Harbor Light Center provides free inpatient and outpatient treatment. Illinois Medicaid covers treatment with minimal copays for qualifying low-income adults. Call the Illinois Helpline at 1-833-234-6343 for free referrals.
How long is inpatient rehab in Illinois?
Standard inpatient rehab in Illinois lasts 28-30 days, which is the most common program length covered by insurance. Extended programs of 60-90 days are available with costs ranging $12,000-$60,000. Long-term residential programs (6-12 months) are offered through therapeutic communities and faith-based organizations. Insurance typically authorizes 28-30 days initially with continued stay reviews every 7-14 days for extensions based on medical necessity.
What is SUPR and how does it help with rehab?
SUPR (Division of Substance Use Prevention and Recovery) is the division within the Illinois Department of Human Services that oversees addiction treatment, prevention, and recovery services statewide. SUPR licenses and certifies more than 900 treatment facilities across 163+ funded organizations, distributes state and federal treatment funding, and ensures services are available for uninsured and underinsured individuals. SUPR certification is required for facilities to bill Illinois Medicaid for addiction services.
How bad is Illinois's overdose crisis?
Illinois recorded 3,502 overdose deaths in 2023 — a significant but improving number. This represented an 8.3% decrease from 2022, the first annual reduction since 2018. Opioid overdose deaths totaled 2,855 (a 9.7% decrease, outpacing the national 3% decline). Of opioid deaths, 92% involved synthetic opioids (fentanyl). Cook County alone accounted for 1,540 opioid overdose deaths. Xylazine-involved deaths increased 6.4% to 249 in 2023, representing an emerging concern.
How much does outpatient rehab cost in Illinois?
Outpatient rehab in Illinois costs approximately $6,000 for a full treatment course without insurance, with some programs running up to $10,000. Intensive outpatient programs (IOP) cost $4,000-$10,000 for 8-12 weeks. Standard outpatient therapy runs $1,500-$6,000 per month. With insurance, costs drop to $400-$2,500 per month. Illinois Medicaid covers outpatient treatment with minimal or no copays for qualifying individuals.
How much does alcohol rehab cost in Illinois?
Alcohol rehab in Illinois costs $15,000-$50,000 for 30 days of inpatient treatment without insurance. Alcohol detox adds $2,500-$10,000 (5-14 days) due to seizure risk requiring 24/7 medical monitoring. With insurance, out-of-pocket costs are typically $5,000-$20,000 for inpatient including detox. Outpatient alcohol programs cost $1,500-$6,000 per month without insurance. Many Illinois programs offer FDA-approved medications for alcohol use disorder (naltrexone, Antabuse, Campral).
How much does detox cost in Illinois?
Medical detox in Illinois costs $300-$1,000 per day depending on substance and facility. Alcohol detox runs $400-$1,000/day ($2,800-$14,000 for 7-14 days). Opioid detox costs $300-$800/day ($2,100-$8,000 for 7-10 days). Benzodiazepine detox is $400-$1,000/day ($5,600-$14,000+ for 14+ days). Most insurance covers medical detox at 80-100%. Medicaid covers detox with minimal or no copay. State-funded detox is available through SUPR-funded providers.
What are the best rehab centers in Illinois?
Illinois has many highly-rated treatment programs. Notable facilities include: Hazelden Betty Ford (Chicago), Gateway Foundation (multiple Illinois locations), Rosecrance (Rockford and Chicago metro), Linden Oaks Behavioral Health (Edward-Elmhurst system, suburban Chicago), and AMITA Health Behavioral Medicine Institute. The best program depends on your specific needs: addiction type, co-occurring disorders, insurance coverage, location, and treatment philosophy. Always verify SUPR licensing and look for Joint Commission or CARF accreditation.