Quick answer
CareSource covers substance use disorder treatment across its Ohio Medicaid managed care plans and its Marketplace plans. Ohio Medicaid residential SUD treatment follows ASAM levels of care with prior authorization rules, Marketplace plans must include behavioral health as an essential health benefit, and federal parity law limits how mental health and substance use benefits can be restricted.
The card in your wallet says CareSource, and the question underneath it is simple: does this pay for rehab? CareSource covers substance use disorder treatment across its plan types, but the rules shift depending on whether you hold an Ohio Medicaid managed care plan, a MyCare Ohio plan for people with both Medicaid and Medicare, or an individual Marketplace policy. Here is what the plan's own published documents say, and where to push when an answer is not clear.
The company and where it operates
CareSource is one of the seven managed care plans that the Ohio Department of Medicaid contracts with in the Next Generation program. The full Next Generation Medicaid roster includes AmeriHealth Caritas Ohio, Anthem Blue Cross and Blue Shield, Buckeye Health Plan, CareSource, Humana Healthy Horizons, Molina Healthcare of Ohio, and UnitedHealthcare Community Plan of Ohio.
For Ohioans eligible for both Medicaid and Medicare, CareSource is also one of the statewide plans in the Next Generation MyCare program, which began January 1, 2026 in the original MyCare counties with statewide expansion through mid-2026. If you carry a MyCare card, your behavioral health benefit sits inside that plan.
CareSource also sells Marketplace (ACA) plans. Its marketplace page lists mental health and substance use disorder services among the essential health benefits every plan covers - which matters, because there was a time when individual policies routinely excluded alcohol and drug treatment entirely. That exclusion is gone; federal law requires the category to be covered. What remains variable within individual plans are the networks, prior authorization rules, and cost-sharing.
What the Ohio Medicaid policy actually says about SUD treatment
CareSource publishes its Ohio Medicaid reimbursement policies publicly. Its Residential Treatment Services - Substance Use Disorder policy (PY-0137) lays out several concrete rules that tell you where the authorization bar sits:
- ASAM levels of care govern. The policy states CareSource follows the American Society of Addiction Medicine criteria, as required by the Ohio Department of Medicaid, and describes residential levels 3.1 (clinically managed, low-intensity), 3.3, and 3.5 (clinically managed high-intensity). Inpatient behavioral health and medically managed services sit above those.
- One level of care at a time. A member can only receive services through one level of care at a time, and the plan treats a residential stay as a single admission for billing purposes.
- Bundled services. While a member is in residential care, the plan does not separately reimburse the residential program's internal services - assessments, crisis intervention, individual and group psychotherapy, case management, peer recovery services, urine drug screens, and medical services are part of the residential rate, not extra bills.
- Prior authorization. Earlier versions of the policy required prior authorization for residential admissions exceeding 30 consecutive days per calendar year and required documented medical necessity. Who needs an authorization before, and for how long, is confirmed with member services before admission - do not assume.
- Parity language. The policy itself states that under the Mental Health Parity and Addiction Equity Act rules, coverage for a behavioral health disorder will not be subject to limitations less favorable than those applied to medical conditions covered under the policy.
The federal parity law underneath all of it
The Mental Health Parity and Addiction Equity Act is the reason plan documents read the way they do. CMS explains that MHPAEA requires comparable coverage: if a group health plan (or Medicaid managed care plan, under the parity rules that extend to Medicaid) offers substance use disorder benefits, the copays, deductibles, visit limits, and prior authorization practices for those benefits cannot be more restrictive than the plan applies to medical and surgical care. It does not require a plan to cover every level of care in every case - it requires the restrictions to be even-handed. Knowing that law exists changes the conversation when a denial letter arrives: you can ask the plan which documents show its parity analysis.
What this means if you are trying to get in somewhere
If a residential program told you CareSource would not cover your stay, ask for the level-of-care determination in writing and which ASAM criteria were applied. The policy exists; a denial should trace back to it. If you are trying to start medication-assisted treatment, Ohio's single-pharmacy-benefit structure means your plan's covered formulations are governed by the state Unified Preferred Drug List, not a CareSource-only list.
You can also simply call us and let us sort through which questions to ask: call or text (800) 653-9376, day or night. We check your benefits before you commit. Nothing on this page is a guarantee of coverage - your member handbook and the plan contract are controlling documents - but it is enough to know what to ask.
If you are in immediate danger, call 911. If you need to talk to someone tonight, call or text 988.
Questions about Caresource Coverage
Does CareSource cover drug and alcohol rehab?
CareSource's Ohio Medicaid reimbursement policy covers residential substance use disorder treatment at ASAM levels 3.1, 3.3, and 3.5, inpatient behavioral health services, and medication-assisted treatment, with prior authorization requirements that depend on the length and type of admission. Marketplace plans are required to cover mental health and substance use disorder services as part of essential health benefits.
Is CareSource an Ohio Medicaid managed care plan?
Yes. CareSource is one of the managed care plans the Ohio Department of Medicaid contracts with under the Next Generation program, alongside AmeriHealth Caritas Ohio, Anthem, Buckeye, Humana Healthy Horizons, Molina, and UnitedHealthcare Community Plan. It also serves full-benefit dual eligibles through the MyCare Ohio program.
Do I need prior authorization for residential treatment?
CareSource's Ohio Medicaid policy states that prior authorization requirements apply to residential SUD admissions, with medical necessity evaluated under the ASAM criteria that the Ohio Department of Medicaid requires. Your care manager or member services can walk you through exactly what your plan requires before an admission.
What does the parity law mean for my coverage?
The Mental Health Parity and Addiction Equity Act requires that if a plan covers substance use care, the financial requirements and treatment limitations on that coverage cannot be more restrictive than what the plan applies to medical and surgical benefits. CareSource's own Ohio Medicaid policy language repeats that parity commitment.
Does CareSource cover buprenorphine or other medication-assisted treatment?
CareSource's Ohio Medicaid policy defines medication-assisted treatment as FDA-approved medications combined with counseling and behavioral therapies. Ohio Medicaid's pharmacy benefit for managed care members is administered through a single statewide pharmacy benefit manager using the Ohio Unified Preferred Drug List, so covered formulations are listed there.