6 Levels of Care · ASAM-aligned · 2026

Addiction Treatment Types Explained

Q: How long is rehab typically?

Detox: 3–7 days. IOP: 8–12 weeks. PHP: 2–6 weeks. Residential: 28, 60, or 90 days. MAT: 12+ months minimum, often ongoing. NIDA research shows programs lasting 90+ days produce 2–3× better outcomes than shorter stays — but "longer" doesn't always mean residential; it can mean 90 days of combined residential + outpatient + MAT.

Q: Is inpatient or outpatient better?

Neither is universally "better" — they're matched to severity. Inpatient fits severe SUD with unstable home. Outpatient fits mild-moderate SUD with work and stable housing. For most moderate-severity SUD, outpatient + MAT produces comparable outcomes to residential at 1/10 the cost.

Q: What's the difference between detox and rehab?

Detox is medical stabilization — managing withdrawal safely with medications over 3–7 days. Rehab is the actual treatment — therapy, counseling, behavior change over 28+ days. Detox alone has 80%+ relapse rate. Effective treatment = detox + rehab + aftercare.

Q: Can I do detox at home?

Depends on substance. Cannabis, stimulants, most hallucinogens: yes, uncomfortable but safe. Alcohol, benzodiazepines, opioids: NO — withdrawal can be fatal. Alcohol DTs have 5–15% mortality without medical management. Always consult a provider for physically addictive substances.

Q: What is dual diagnosis treatment?

Concurrent treatment of SUD plus a mental health disorder (depression, anxiety, PTSD, bipolar). ~50% of people with SUD have co-occurring mental health conditions. Treating both simultaneously produces significantly better outcomes than sequential. Look for facilities with integrated dual-diagnosis programs.

Q: Does MAT mean I'm "just substituting one drug for another"?

No — this is an outdated myth. Buprenorphine and methadone are long-acting medications that stabilize brain chemistry without producing the euphoria that fuels addiction. SAMHSA, NIDA, WHO, and ASAM all classify MAT as evidence-based first-line treatment for OUD. Read more myths debunked.

Q: How do I know if I've completed treatment?

Treatment "completion" is defined by each level of care — typically completing the authorized length of stay plus discharge with aftercare plan. But recovery continues long after treatment ends. The most important metric is achieving stable remission (12+ months without meeting SUD criteria), which usually requires continuing care.

Q: Do I need to try outpatient before inpatient?

No, and insurers can't require it under MHPAEA. ASAM criteria determine appropriate level of care upfront — if severity warrants residential, you start there. "Failed outpatient" as a prerequisite for inpatient is a parity violation.

Q: What if I relapse during treatment?

Relapse during treatment is common and doesn't mean failure. It's a signal that the current level of intensity is insufficient — typically indicates stepping up (IOP → PHP, PHP → residential) or adding MAT. Research: 40-60% of people experience at least one relapse during recovery.

Q: Does insurance cover all these treatment types?

Under MHPAEA, yes — all levels of care including MAT, residential, PHP, IOP, outpatient. Coverage depends on medical necessity determination and pre-authorization for higher levels. Learn more on our insurance guide.

Every addiction is different. The American Society of Addiction Medicine (ASAM) defines six levels of care — from inpatient detox to outpatient counseling. Select a type below to find programs.

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Treatment spectrum

3-7

Days detox

28-90

Days residential

9-20

Hrs/week IOP/PHP

12+

Months MAT typical

Medical Detox

3-7 day supervised withdrawal management

View Medical Detox centers

Inpatient / Residential

28-90 days of 24/7 care

View Inpatient / Residential centers

Outpatient (IOP / PHP)

9-20 hrs/week while living at home

View Outpatient (IOP / PHP) centers

Medication-Assisted Treatment

Buprenorphine, methadone, naltrexone

View Medication-Assisted Treatment centers

Dual Diagnosis

Co-occurring mental health + SUD

View Dual Diagnosis centers

Telehealth

Remote therapy and MAT prescribing

View Telehealth centers

Quick answer: matching severity to treatment type

The American Society of Addiction Medicine (ASAM) defines 6 levels of care matched to addiction severity using a 6-dimension assessment¹. Severe SUD + physical dependence → medical detox first, then residential. Moderate SUD → PHP or IOP. Mild SUD → outpatient + peer support. Opioid use disorder → MAT is first-line, reducing overdose deaths by 50%². The "best" treatment isn't the most expensive — it's the level clinically matched to your assessment. This page walks through each type, when to use it, and what outcomes to expect.

How clinicians actually choose: the ASAM 6 dimensions

ASAM's placement criteria replaced "one-size-fits-all" treatment in 1991 and became standard in 2013. A licensed clinician scores you on each dimension (0–5 severity) during an assessment. The dimension with the highest score drives level-of-care recommendation:

Acute intoxication / withdrawal

Will you need medical management of withdrawal? Severe alcohol, benzo, or opioid dependence = medical detox first.

Biomedical conditions

Chronic illness, pregnancy, pain management — do they need concurrent medical care?

Emotional / behavioral / cognitive

Co-occurring mental health (depression, PTSD, anxiety)? Dual-diagnosis programs needed.

Readiness to change

Pre-contemplation, contemplation, action phase? Determines whether motivational interviewing or active treatment is appropriate.

Relapse / continued use potential

High-risk triggers, prior relapse history, limited coping skills? Higher level of structure needed.

Recovery environment

Housing, work, family support, access to substances at home? Unstable environment may require residential.

Takeaway: you don't pick your level of care alone. A clinical assessment using ASAM criteria determines the match. Our DSM-5 self-assessment gives a preliminary severity reading; a full ASAM assessment takes 45–60 minutes with a licensed clinician.

The 6 ASAM levels: when each is used

ASAM level	Who it's for	Hours/week	Evidence-based outcome
0.5 Early intervention	At-risk use below SUD threshold	1–2	Prevents progression to SUD
1 Outpatient	Mild SUD, stable home	< 9	~70% 12-month remission w/ adherence³
2.1 IOP	Moderate SUD, stable enough for home	9–15	Comparable to residential for moderate severity
2.5 PHP	Moderate-severe, need structure but not 24h	20+	Bridge from residential or alternative
3.1–3.7 Residential	Severe SUD, unstable home, dual diagnosis	24/7	~50% remission, higher with aftercare
4 Medically managed	Acute medical withdrawal (detox)	24/7	Medical stabilization — not treatment alone

Myth to reject: "residential is always best." Research consistently shows that matching severity to level of care matters more than picking the most intensive option. Overshooting (residential for mild SUD) costs more and can be counterproductive. Undershooting (outpatient for severe SUD) produces worse outcomes than appropriate intensity.

Substance-specific treatment considerations

Different substances require different first-line approaches. Skipping medical detox for physically addictive substances can be fatal.

Requires medical detox

Alcohol · Benzos · Opioids

Withdrawal can trigger seizures, DTs (alcohol), life-threatening complications. Never detox at home. Alcohol DTs have 5–15% mortality untreated⁴.

Usually OK without medical detox

Stimulants · Cannabis · Hallucinogens

Withdrawal uncomfortable but not life-threatening. Residential often beneficial for severity and co-occurring issues.

MAT is first-line

Opioid use disorder (OUD)

Buprenorphine, methadone, or naltrexone. Reduces overdose deaths by 50%². More effective than abstinence-only. Find MAT providers.

MAT available too

Alcohol use disorder (AUD)

Naltrexone, acamprosate, disulfiram. FDA-approved, reduces heavy drinking days by 25%. Underused — only ~10% of eligible patients receive MAT for AUD.

How to start treatment: 5 paths

There's no single "right" way to start. Pick the path that fits your urgency and situation:

1

Urgent / crisis

Call 911 or go to the nearest ER if immediate medical danger (overdose, severe withdrawal, suicide risk). ERs initiate detox and refer to continuing care.
2

24-48 hour entry

Call SAMHSA National Helpline (1-800-662-HELP) or our helpline. Specialists assess severity, verify insurance, match you to a facility admitting within 24–48 hours.
3

Planned admission (1–2 weeks)

Choose facility via our state directory, use cost calculator, arrange FMLA leave, admit after prep.
4

Outpatient path

Primary care physician refers to outpatient / MAT provider. No residential stay needed — fits work and family obligations.
5

Specialized population

Pregnancy, LGBTQ+, teens, veterans — look for facilities with specific population tracks. Outcomes significantly better in affirming environments.

Related tools & guides

Tool

DSM-5 Self-Assessment Quiz

11 questions to estimate SUD severity and recommended level of care.

Tool

Rehab Cost Calculator

Estimate out-of-pocket cost by program type + insurance.

Guide

12-Point Rehab Selection Checklist

Accreditation, evidence-based methods, staff credentials, aftercare.

Recovery

6 Stages of Recovery

Timeline from pre-contemplation to long-term maintenance.

Frequently asked questions about treatment types

How long is rehab typically?

Detox: 3–7 days. IOP: 8–12 weeks. PHP: 2–6 weeks. Residential: 28, 60, or 90 days. MAT: 12+ months minimum, often ongoing. NIDA research shows programs lasting 90+ days produce 2–3× better outcomes than shorter stays — but "longer" doesn't always mean residential; it can mean 90 days of combined residential + outpatient + MAT.

Is inpatient or outpatient better?

Neither is universally "better" — they're matched to severity. Inpatient fits severe SUD with unstable home. Outpatient fits mild-moderate SUD with work and stable housing. For most moderate-severity SUD, outpatient + MAT produces comparable outcomes to residential at 1/10 the cost.

What's the difference between detox and rehab?

Detox is medical stabilization — managing withdrawal safely with medications over 3–7 days. Rehab is the actual treatment — therapy, counseling, behavior change over 28+ days. Detox alone has 80%+ relapse rate. Effective treatment = detox + rehab + aftercare.

Can I do detox at home?

Depends on substance. Cannabis, stimulants, most hallucinogens: yes, uncomfortable but safe. Alcohol, benzodiazepines, opioids: NO — withdrawal can be fatal. Alcohol DTs have 5–15% mortality without medical management. Always consult a provider for physically addictive substances.

What is dual diagnosis treatment?

Concurrent treatment of SUD plus a mental health disorder (depression, anxiety, PTSD, bipolar). ~50% of people with SUD have co-occurring mental health conditions. Treating both simultaneously produces significantly better outcomes than sequential. Look for facilities with integrated dual-diagnosis programs.

Does MAT mean I'm "just substituting one drug for another"?

No — this is an outdated myth. Buprenorphine and methadone are long-acting medications that stabilize brain chemistry without producing the euphoria that fuels addiction. SAMHSA, NIDA, WHO, and ASAM all classify MAT as evidence-based first-line treatment for OUD. Read more myths debunked.

How do I know if I've completed treatment?

Treatment "completion" is defined by each level of care — typically completing the authorized length of stay plus discharge with aftercare plan. But recovery continues long after treatment ends. The most important metric is achieving stable remission (12+ months without meeting SUD criteria), which usually requires continuing care.

Do I need to try outpatient before inpatient?

No, and insurers can't require it under MHPAEA. ASAM criteria determine appropriate level of care upfront — if severity warrants residential, you start there. "Failed outpatient" as a prerequisite for inpatient is a parity violation.

What if I relapse during treatment?

Relapse during treatment is common and doesn't mean failure. It's a signal that the current level of intensity is insufficient — typically indicates stepping up (IOP → PHP, PHP → residential) or adding MAT. Research: 40-60% of people experience at least one relapse during recovery.

Does insurance cover all these treatment types?

Under MHPAEA, yes — all levels of care including MAT, residential, PHP, IOP, outpatient. Coverage depends on medical necessity determination and pre-authorization for higher levels. Learn more on our insurance guide.

Sources & references

ASAM Criteria for Treatment Placement — The ASAM Criteria, 3rd edition. asam.org.
SAMHSA MAT overview — reduction in overdose mortality with medication-assisted treatment. samhsa.gov.
NIDA Principles of Drug Addiction Treatment, 3rd Edition. nida.nih.gov.
NIH MedlinePlus — Alcohol withdrawal / DTs mortality. medlineplus.gov.
SAMHSA TIP 63 — Medications for Opioid Use Disorder. samhsa.gov/tip63.
MHPAEA — Mental Health Parity and Addiction Equity Act. cms.gov.

Treatment recommendations vary by individual clinical assessment. This is educational content, not medical advice. Last reviewed: April 2026 by the RehabPulse Editorial Team.