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Most people picture the same thing when they think about addiction treatment: a month living at a residential facility. That setting exists, but it is the smallest part of the system. Fewer than a quarter of treatment programs in the country offer residential care, while more than four in five offer outpatient care. This page walks through every level of treatment, how intensive each one is, and which ones you can realistically get for free or at low cost.
Key Points
- Addiction treatment runs across four broad levels, from weekly therapy to hospital care.
- Outpatient care is offered by 83.8% of US treatment programs, residential by 22.5%.
- Nearly half of programs treat people at no charge or minimal cost if they cannot pay.
- Medication treatment for opioid use disorder is usually the fastest and cheapest route in.
- The clinical standard changed in 2023, and most treatment pages online still describe the old version.
- Cost and access barriers are a documented part of how clinicians decide your level of care.
In This Article:
- What kinds of addiction treatment are available?
- The levels of care, explained
- Which levels of treatment are free or low cost?
- How your level of care gets decided
- Virtual and telehealth treatment options
- How long does addiction treatment last?
- Why detox is the hardest level to get free
- What happens after a program ends
- Find treatment programs near you
- Frequently asked questions
What kinds of addiction treatment are available?
Addiction treatment is organized as a continuum of four broad levels, running from outpatient therapy through intensive outpatient programs, residential care, and hospital care. Medication treatment for opioid and alcohol use disorder runs alongside all of them, and recovery housing can be added to outpatient care. Most treatment in the United States is delivered on an outpatient basis: 83.8% of substance use treatment facilities offer it, against 22.5% offering residential care and 7.5% offering hospital inpatient care, according to SAMHSA’s 2024 National Substance Use and Mental Health Services Survey.4
If you are picturing a residential stay, you are picturing the scarcest and most expensive part of the system, and the part a clinical assessment is least likely to recommend for you. Most people who get treatment get it while living at home. The therapies used inside these levels range from established talk therapies to newer approaches such as psychedelic-assisted therapy.
Two things are easy to confuse here. Setting is where care happens: your own home, a clinic, a residential facility, a hospital. Intensity is how many hours of clinical care you receive each week and who supervises it. A program can be low-setting and high-intensity, which is what an intensive outpatient program is, and that combination is usually the most affordable way to get a serious amount of treatment.
Source: SAMHSA, 2024 National Substance Use and Mental Health Services Survey, published September 2025. Based on 15,953 responding substance use treatment facilities.
The levels of care, explained
The standard used across the United States is The ASAM Criteria, published by the American Society of Addiction Medicine (ASAM), and the current version is the Fourth Edition released in October 2023. It describes four broad levels of care with decimal gradations inside each one. Most treatment websites still describe the previous edition, so the numbers you see elsewhere may not match what your assessor or insurer uses.
| Level | What it is | Typical intensity | Who leads care |
|---|---|---|---|
| 1.0 | Long-term remission monitoring | Periodic check-ins, ongoing medication management | Clinical staff |
| 1.5 | Outpatient therapy | Under 9 hours per week, fewer than three days a week | Clinical staff |
| 1.7 | Medically managed outpatient, includes opioid treatment programs | More than weekly, less than daily | Medical staff |
| 2.1 | Intensive outpatient | 9 to 19 hours per week | Clinical staff |
| 2.5 | High-intensity outpatient, widely still called partial hospitalization | 20 or more hours per week | Clinical staff |
| 2.7 | Medically managed intensive outpatient | Daily or near daily | Medical staff |
| 3.1 | Clinically managed low-intensity residential | 24-hour support, not 24-hour supervision | Clinical staff |
| 3.5 | Clinically managed high-intensity residential | 24-hour support and supervision | Clinical staff |
| 3.7 | Medically managed residential | Living on site with medical management | Medical staff |
| 4 | Medically managed inpatient | Acute hospital care | Medical staff |
| RR | Recovery residence, added alongside an outpatient level | Housing plus outpatient care | Housing operator plus your program |
Two variants appear alongside these levels. A BIO designation marks Level 3.7 programs equipped for intravenous fluids, intravenous medications, and advanced wound care. A co-occurring enhanced designation, written COE, marks programs with additional mental health capability, and it exists for the x.5 and x.7 levels and for Level 4. There is also a separate Level 4 Psychiatric for inpatient psychiatric settings. Source: The ASAM Criteria, Fourth Edition, Volume 1: Adults.1,2
The decimal is not a rating. A level ending in .1 or .5 is clinically managed, meaning a counselor or therapist leads your treatment planning. A level ending in .7 is medically managed, meaning a doctor or nurse leads it because withdrawal, a physical health condition, or a psychiatric condition needs medical attention.
Three changes in the Fourth Edition are worth knowing about because they change what you should ask for.
Withdrawal management, which most people call detox, is no longer a separate track. It sits inside the medically managed levels, on the assumption that a program treating your withdrawal should also be treating the underlying substance use disorder rather than handing you off afterwards.
Recovery housing is now formally recognized alongside outpatient treatment rather than only as an afterthought once a program ends. ASAM defined this jointly with the National Alliance for Recovery Residences, so an assessment can recommend, for example, intensive outpatient care plus a sober living home.
Naming has shifted. What the standard now calls high-intensity outpatient at Level 2.5 is what almost every program, insurer, and job listing still calls a partial hospitalization program, or PHP. If you are comparing programs, expect to hear both. The same applies to Level 2.1 and intensive outpatient programs, or IOPs.
Which levels of treatment are free or low cost?
The levels of care that are realistically available free or at low cost are the outpatient ones and medication treatment. Residential and hospital care are the scarcest levels and the hardest to obtain without coverage. Nearly half of substance use treatment facilities, 46.3%, offer treatment at no charge or minimal payment to people who cannot afford to pay, and 77.8% accept Medicaid, but that availability is not spread evenly across the levels.4
The pattern to understand is simple. As clinical intensity rises, the number of programs offering that level falls, and the range of funding that reaches it narrows. That is why an honest answer to “what can I actually get” usually points down the intensity ladder rather than up it.
| Level of care | How widely offered | What routinely pays for it | Realistic low-cost or free route |
|---|---|---|---|
| Outpatient therapy (1.5) | Offered by 83.8% of facilities | Medicaid, Medicare, private plans, state funds, sliding fee | Community mental health centers and federally qualified health centers, which discount by income |
| Medications for opioid use disorder (1.7, opioid treatment programs) | 61.7% of facilities provide these medications, 13.9% are federally certified opioid treatment programs | Medicaid, Medicare Part B, state opioid response funds | Often the fastest and cheapest route in, and frequently free on public coverage |
| Intensive outpatient (2.1) | Subset of outpatient providers | Medicaid in most states, private plans, state funds | State-funded and county behavioral health programs |
| High-intensity outpatient (2.5, PHP) | Narrower still, often hospital-attached | Medicaid varies by state, private plans, Medicare Part B | Hospital charity care policies, state-funded programs |
| Residential (3.1 to 3.7) | Offered by 22.5% of facilities | Medicaid subject to state rules, private plans, state funds, nonprofit and faith-based funding | Nonprofit and faith-based residential programs, state-funded beds |
| Hospital inpatient (4) | Offered by 7.5% of facilities | Medicare Part A, Medicaid, private plans | Emergency and charity care policies rather than a planned route |
| Recovery residence | Separate from licensed treatment | Rarely covered by insurance, usually resident-funded rent | Nonprofit and peer-run houses, some state-subsidized |
Availability figures: SAMHSA 2024 N-SUMHSS.4
Across all substance use treatment facilities, 77.8% accept Medicaid, 52.6% accept Medicare, 52.5% accept a state-financed plan other than Medicaid, and 46.9% accept federal military insurance. Only 1.6% accept no payment at all.4 Medicaid is the widest door in the system, which is why checking your eligibility is worth doing before you rule anything out. Options for veterans substance use treatment are covered separately.
For what each of these levels actually costs, including published payer rates, see how much rehab costs. For how free and publicly funded treatment is paid for and who it prioritizes, see free rehab. If you have no coverage at all, the order of operations is on the page for getting treatment without insurance.
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How your level of care gets decided
A clinician recommends your level of care using a structured multidimensional assessment rather than a single test score. The current standard uses six dimensions, and one of them is specifically about barriers to care and your own preferences. Cost, transport, childcare, and work are part of the clinical record under the Fourth Edition rather than something you have to raise separately.
The six dimensions in the Fourth Edition are intoxication, withdrawal and addiction medications; biomedical conditions; psychiatric and cognitive conditions; substance use-related risks; recovery environment interactions; and person-centered considerations.1,3
That last one is new, and it replaced a dimension called readiness to change. Its subdimensions are barriers to care, including social determinants of health, patient preferences, and the need for motivational enhancement. ASAM’s own assessment guide has the interviewer ask two direct questions once a level of care has been recommended: whether you are willing to attend it, and whether you are able to. If the answer to either is no, the guide asks what your concerns are and offers caregiving responsibilities, employment, and transport as examples.2
Then it goes further. If the recommendation has to change, the clinician documents why, and the reasons they can record include financial barriers, the level of care not being available in your area, a waiting list, work or caregiving responsibilities, the program being too far away, transport or mobility problems, and language access.2 Affordability is not a side conversation in the current standard. It is a documented clinical variable with a box to tick.
One consequence is counterintuitive and worth knowing before you negotiate. When the right level of care is not available, ASAM’s guidance is that the substitute is often a more intensive level rather than a less intensive one, because the alternative has to deliver the services you actually need. Being told a program is full is not the same as being told to wait.
Two of the Fourth Edition’s stated principles are also useful to know before an assessment. Admission is meant to be based on your needs rather than arbitrary prerequisites, and ASAM names prior treatment failure as an example of an arbitrary prerequisite. Nobody should be told they have to fail outpatient treatment before residential care can be considered. And movement between levels is meant to follow your progress and outcomes rather than a predetermined length of stay.1
Questions worth asking at an assessment
- Which level are you recommending, and why?
- What is available at that level near me, and what is the wait?
- What does the program cost me given my coverage?
- If that level is not available or affordable, what are you recommending instead, and what would you add to it?
If you have not been assessed yet, most programs and many community clinics will do one, often at no charge. See what a substance use assessment involves and what happens between assessment and admission.
Virtual and telehealth treatment options
Every outpatient level of care now has a remote version, and the Fourth Edition of The ASAM Criteria added a dedicated chapter on telehealth and other health technologies. Virtual programs remove transport costs, parking, childcare gaps, and time away from work, which for many people are a larger barrier than the treatment bill itself.
What can be delivered remotely covers individual and group therapy, intensive outpatient programs run entirely online, psychiatric care, and medication management. Buprenorphine for opioid use disorder can be started and maintained through telehealth in many circumstances, and ASAM’s Fourth Edition explicitly encourages low-threshold access to addiction medications. If finding a prescriber is the obstacle, start with how to find a Suboxone doctor.
What cannot be delivered remotely is anything that needs hands-on monitoring. Medically managed withdrawal, residential care, and hospital care all require you to be there. ASAM’s assessment guide does allow an assessment itself to happen by video or by phone.2
Coverage for virtual care varies by payer and by state, and it has changed repeatedly since 2020. Verify it against your own plan rather than a general rule. Making an employer or marketplace plan pay covers how to do that.
How long does addiction treatment last?
There is no standard length. The Fourth Edition of The ASAM Criteria states that people should move along the continuum of care based on their progress and outcomes rather than an arbitrary predetermined length of stay.1 The 30, 60, and 90-day program lengths advertised across the industry are administrative and commercial conventions rather than clinical findings.
Those numbers persist because residential programs are staffed and priced in blocks and payers authorize care in defined increments. None of that makes 30 days the right length for any particular person.
What actually varies is how long you spend at each level and how many levels you pass through. Someone might spend five days in medically managed withdrawal, three weeks in high-intensity outpatient care, then three months in an intensive outpatient program, then a year on medication with periodic check-ins. Someone else might start and stay at outpatient therapy plus medication and never enter a residential setting at all. Both are complete courses of treatment.
Because programs are paid per day or per session, length is also the main thing driving what an episode of care costs you. The arithmetic for each level is on the cost page.
Why detox is the hardest level to get free
Detox, more precisely called withdrawal management, stabilizes your body while a substance leaves it. It is not treatment for a substance use disorder on its own. In the Fourth Edition it sits inside the medically managed levels of care rather than as a separate step, and those are the scarcest levels in the system, which is why it is the hardest thing on this page to obtain at low cost.
The supply figures explain the squeeze. Hospital inpatient care is offered by 7.5% of substance use treatment facilities. Among facilities providing medication services for opioid use disorder, 28.1% provide medically supervised withdrawal.4 Withdrawal management needs medical staff, monitoring, and often beds, which is the most expensive combination in the system and the one publicly funded programs can afford the least of.
There is a practical consequence. If you are waiting for a withdrawal management bed, medication treatment for opioid use disorder can often start sooner and at lower cost, and starting it does not use up your options later. For alcohol and benzodiazepines specifically, stopping without medical advice can be dangerous, so this is a conversation to have with a clinician rather than a decision to make alone.
For what withdrawal management actually involves, how long it takes by substance, and how it differs from treatment, see drug and alcohol detox. For what to do while you wait for a place, see getting in and harm reduction services, which need no appointment, no eligibility check, and no payment.
What happens after a program ends
The Fourth Edition treats addiction as a chronic condition and added a level of care specifically for the period after intensive treatment ends. Level 1.0, long-term remission monitoring, covers recovery management check-ups and continuing medication management for people in sustained remission, with rapid re-entry into care if things change.1
The support that treatment programs themselves offer after discharge is mostly practical. Among substance use treatment facilities, 71.1% help people find housing, 70.5% offer mentoring or peer support, and 46.9% offer self-help groups.4 Almost all of the rest of the free layer sits outside the treatment system entirely: support groups cost nothing and have no eligibility requirements, recovery apps fill the gaps between appointments, and sober living homes provide housing alongside outpatient care.
Ongoing therapy and, where relevant, care for co-occurring mental health conditions usually continue at the outpatient level indefinitely rather than ending on a date.
Find treatment programs near you
Knowing which level of care fits is only useful if programs offering it exist near you. Our directory lists free, low-cost, Medicaid-accepting and sliding-scale programs by state and city, filtered by the level of care they provide.
Every program in the directory is checked against state licensing, accreditation, and an affordability requirement before it is listed, and lead-generation hotlines are excluded. How we research and vet programs explains the process and what disqualifies a listing. You can browse treatment programs by state and city directly.
Frequently asked questions
What are the levels of addiction treatment?
The current ASAM Criteria describes four broad levels: outpatient treatment, intensive and high-intensity outpatient treatment, residential treatment, and medically managed inpatient treatment. Decimal gradations within each level indicate intensity and whether clinical or medical staff lead care, and a recovery residence can be recommended alongside outpatient levels.
Which type of addiction treatment is cheapest?
Outpatient therapy and medication treatment for opioid or alcohol use disorder are the most widely available and least expensive levels, and they are the most likely to be free on Medicaid or at a program that discounts by income. Residential and hospital care are the scarcest and most expensive.
Does a person have to try outpatient treatment before residential care?
No. The ASAM Criteria states that admission should be based on a person’s assessed needs rather than arbitrary prerequisites, and names prior treatment failure as an example of such a prerequisite.
How long does addiction treatment last?
There is no fixed length. The current standard says people should move between levels of care based on progress and outcomes rather than a predetermined number of days, so the common 30, 60, and 90-day program lengths are administrative conventions rather than clinical requirements.
Can addiction treatment be done online?
Yes, for outpatient levels. Therapy, group programs, psychiatric care, and medication management can all be delivered remotely, and the current ASAM Criteria includes a chapter on telehealth. Withdrawal management, residential care, and hospital care require in-person attendance.
What happens if the recommended level of care is not available?
The clinician documents why the recommendation could not be followed, using categories that include financial barriers, local availability, and waiting lists, then builds an alternative. Under the current standard the substitute is often a more intensive level of care rather than a less intensive one, since the alternative still has to deliver the services the person needs.
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References
- American Society of Addiction Medicine. The ASAM Criteria, Fourth Edition. Released October 2023. https://www.asam.org/asam-criteria/asam-criteria-4th-edition
- American Society of Addiction Medicine. The ASAM Criteria, Fourth Edition Level of Care Assessment Guide, Adults. 2024.
- Colorado Department of Health Care Policy and Financing. The ASAM Criteria Fourth Edition summary. https://hcpf.colorado.gov/sites/hcpf/files/ASAM-Fourth-Ed-Disseminate-Summary.pdf
- Substance Abuse and Mental Health Services Administration. National Substance Use and Mental Health Services Survey 2024: Data on Substance Use and Mental Health Treatment Facilities. Publication No. PEP25-07-013. Released September 2025.
