Levels of Care

8 levels of addiction treatment care, from crisis intervention through long-term aftercare

Medically reviewed by Dr. Marcus Ellison, MD, FASAM Last updated September 18, 2026
At a Glance
  • 8 levels of care, from medical detox to long-term aftercare
  • Set by an ASAM assessment — withdrawal risk, health, mental health, home
  • Choosing too low a level is the more common and more dangerous mistake
Level of Care

What “Level of Care” Actually Means

Level of care describes how much clinical structure and medical supervision a treatment program provides — how many hours per week you attend, whether you live on site, and whether a nurse or physician is available around the clock. It is the single most consequential decision in addiction treatment, and it is the one people most often get wrong.

The field's shared reference point is the ASAM Criteria, published by the American Society of Addiction Medicine and used by most clinicians and insurers in the United States. Rather than guessing, ASAM places a person along a continuum by assessing six dimensions: withdrawal risk, medical conditions, emotional and behavioral health, readiness to change, relapse potential, and the stability of the environment they will return to each night. Two people using the same substance in the same amount can land at very different levels because their home lives, medical histories and co-occurring diagnoses differ.

Choosing too low a level is the more common and more dangerous error. Someone with a daily alcohol or benzodiazepine habit who enters a weekly outpatient group is at genuine medical risk during withdrawal. Choosing too high a level has costs too — unnecessary time away from work, children and income can undermine the very stability recovery depends on.

Use the cards below to understand what each level involves before you call anyone. Then use the comparison table to see the levels side by side by intensity, weekly time commitment and living arrangement. A reputable program will assess you first and recommend a level, including recommending a lower one or referring you elsewhere when that is the right clinical answer. If a facility quotes a level of care and a length of stay before completing an assessment, treat that as a warning sign.

Never stop drinking alcohol or taking benzodiazepines abruptly without medical guidance. Withdrawal from either can cause seizures and, in severe cases, can be fatal. If you are physically dependent, start with a medical detox assessment — call us at 1-888-685-2199 or the SAMHSA National Helpline at 1-800-662-4357 (HELP).

The Eight Levels of Addiction Care

Each level below is a separate page with the centers in our directory that provide it.

Intervention

A structured, professionally facilitated meeting where family and friends deliver a unified message and an immediate, pre-arranged treatment plan to someone who is refusing help.

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Medical Detox

Round-the-clock supervised withdrawal management using medication and monitoring to keep the body safe while substances clear. Essential for alcohol, benzodiazepine and opioid dependence.

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Inpatient / Residential

Live-in treatment with 24-hour clinical staffing, daily therapy and a substance-free environment, typically 30 to 90 days, for people who need distance from their triggers.

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Partial Hospitalization (PHP)

Hospital-level day treatment, usually five to seven days a week for about six hours daily, with clients returning home or to sober housing each evening.

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Intensive Outpatient (IOP)

Roughly nine to fifteen structured therapy hours a week across three to five sessions, allowing people to keep working, studying or parenting while in active treatment.

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Outpatient

The least intensive level: one to a few counseling or group sessions each week, used as a step-down from higher care or as an entry point for milder substance use disorders.

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Aftercare / Continuing Care

Ongoing support after formal treatment ends — alumni groups, recovery coaching, scheduled check-ins and relapse-prevention planning that protect gains through the critical first year.

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Sober Living

Structured, substance-free group housing with curfews, house meetings and drug testing, bridging the gap between residential treatment and fully independent living.

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The Continuum of Care, Side by Side

Levels are mapped to the ASAM Criteria used by most US clinicians and insurers. Hours shown are typical adult ranges; adolescent programs differ.

Sources: ASAM Criteria (4th edition) and SAMHSA treatment guidance. Individual programs vary; always ask for a formal assessment.
Level of careASAM levelTypical hours per weekWhere you sleepUsually right when
InterventionPre-treatmentOne sessionHomeSomeone needs help but is refusing to seek it
Medical Detox3.7-WM / 4-WM (or 1–2-WM outpatient)24-hour care, 3–10 daysOn sitePhysical dependence on alcohol, benzodiazepines or opioids
Inpatient / Residential3.1 – 3.724-hour care, 30–90 daysOn siteHome environment is unsafe or unsupportive; prior outpatient attempts failed
Partial Hospitalization (PHP)2.520–35 hoursHome or sober livingNeeds near-daily clinical structure but is medically stable
Intensive Outpatient (IOP)2.19–15 hoursHome or sober livingStable housing and support; must keep working, studying or parenting
Outpatient1.01–8 hoursHomeMilder substance use disorder, or stepping down from a higher level
Aftercare / Continuing CarePost-treatment1–4 hoursHomeFormal treatment is complete and the goal is long-term maintenance
Sober LivingRecovery residenceHousing, not clinical hoursSober residenceClinically ready to step down but not yet ready to live unsupervised

Levels of Care: Frequently Asked Questions

There are eight commonly recognised steps: intervention, medical detox, inpatient or residential treatment, partial hospitalization (PHP), intensive outpatient (IOP), standard outpatient, aftercare or continuing care, and sober living. They differ mainly in three things — how many hours a week you attend, whether you sleep at the facility, and whether medical staff are on site around the clock. Most people move through several levels rather than just one, stepping down in intensity as they stabilise.
Only if you are physically dependent. Detox manages withdrawal; it does not treat addiction. People dependent on alcohol, benzodiazepines, opioids or other sedatives usually need it first, because withdrawal from alcohol and benzodiazepines can be medically dangerous. Someone using cocaine, methamphetamine or cannabis often does not need medical detox and can begin at residential or intensive outpatient level. A clinical assessment settles the question in under an hour, and any accredited program will do one before admitting you.
Both are day programs where you sleep at home or in sober housing, and the difference is intensity. Partial hospitalization (ASAM level 2.5) runs roughly 20 to 35 hours a week, typically five to seven days, and includes more medical and psychiatric oversight. Intensive outpatient (ASAM level 2.1) runs about 9 to 15 hours a week across three to five sessions, often scheduled in evenings so people can keep working. PHP is frequently used as a step down from residential care, with IOP following it.
The most common programs are 30, 60 and 90 days. Research consistently associates longer engagement with better outcomes — NIDA identifies roughly 90 days of treatment across all levels combined as a useful threshold, though that does not mean 90 days of residential care. Many people complete two to four weeks of residential treatment and then continue in PHP, IOP and aftercare, which together far exceed 90 days at a much lower cost.
Most plans cover the full continuum, but they authorise it one level at a time based on medical necessity. Under the Mental Health Parity and Addiction Equity Act, coverage for substance use treatment cannot be more restrictive than coverage for comparable medical care. In practice insurers often approve a set number of days and then review. A good admissions team will document your ASAM assessment to justify the level requested and will appeal denials on your behalf.
They overlap but are not identical. Sober living homes are privately operated recovery residences that residents pay for, with house rules, curfews, drug testing and required meeting attendance, but no formal clinical treatment on site. Halfway houses are often state-funded or tied to the criminal justice system, with mandated stays and stricter reporting. Both provide the structured, substance-free environment that makes early recovery far more durable than returning straight home.
Sometimes, and it is the right call more often than people assume. If you are medically stable, have a safe and supportive home, no serious co-occurring psychiatric condition, and reliable transport, outpatient or intensive outpatient care produces outcomes comparable to residential treatment for many people. Residential care earns its cost when the home environment is unsafe, when previous outpatient attempts have failed, or when withdrawal and psychiatric risk require constant supervision.

Explore Other Treatment Categories

Every treatment option in our directory is organised into six browsable categories. Start anywhere — or call and let a specialist narrow it down for you.

Evidence-Based Therapies Substance Addictions Specialty Programs Dual Diagnosis Medication-Assisted Treatment All Treatment Resources

Not Sure Which Level of Care You Need?

A short, no-pressure conversation with a treatment specialist can identify the right level of care and the centers near you that provide it. Calls are confidential and available 24 hours a day.

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