The ASAM Criteria, Explained: Why It’s the Standard for Substance Use Treatment

For a patient with a substance use disorder, being diagnosed is often just the starting point. What happens next depends on further assessment: how severe their use is and what they actually need to recover. The ASAM Criteria is the framework most U.S. addiction treatment providers and payors use to make that assessment and then match it to a specific level of care. Clinicians rate risk across six dimensions of a patient’s clinical and life circumstances; that combined picture, beyond just a diagnosis or a substance-use frequency count, is what determines placement.

This piece breaks down the six dimensions, the levels of care they help determine, and the latest updates to the standard, including what’s new in 2026 for adolescent substance use care.

What is the ASAM Criteria?

ASAM stands for the American Society of Addiction Medicine, the organization that publishes the criteria. The ASAM Criteria is a set of guidelines that clinicians use to assess a person with a substance use disorder and match them to the right level of care — from a few hours of outpatient counseling a week to 24-hour inpatient care.

First developed in the 1980s and continually revised since, the ASAM Criteria was originally published as the ASAM Patient Placement Criteria, a name still used interchangeably by some providers, payors, and older state regulations. It’s the most widely used placement framework for addiction treatment in the United States. More than 30 states require licensed SUD providers to use it, and most commercial and Medicaid payors rely on it to determine medical necessity and authorize care, according to ASAM’s own published criteria.

The current version is the Fourth Edition, released in October 2023 for adults, replacing the Third Edition, which had been in use since 2013. It brought updates to how patients are assessed and how the levels of care are organized, which we’ll explore next.

The six dimensions of the ASAM Criteria

The ASAM Criteria assesses every patient across six dimensions. A patient’s risk across Dimensions 1 through 5 generates the initial level-of-care recommendation. Dimension 6 is used to determine whether that recommendation is one they’re actually willing and able to follow through with.

In the previous edition, Dimension 4 was “Readiness to Change.” It considered how motivated a patient was to change their substance use, separate from their actual ability to do so — factors like whether they recognized they had a problem and whether they were seeking treatment because they genuinely wanted to. The latest edition folds readiness under a broader Dimension 6, “Person-Centered Considerations,” which also covers barriers to care, social determinants of health, and patient preferences.

When applying the revised ASAM Criteria, clinicians use Dimensions 1 through 5 to generate a level-of-care recommendation. Dimension 6 is then considered, working with the patient to determine what their care should actually look like day to day.

Take a patient whose Dimensions 1 through 5 point toward a clinically managed high-intensity residential treatment level of care. During the conversation, the patient tells the clinician they can’t be away from their two young children for that long, no matter how clinically appropriate residential care might be. The clinician and patient work through it together, and the plan that comes out of that conversation, whether it’s residential care with a modified structure, a different level of care entirely, or additional support to make residential care possible, may not match the initial recommendation on paper, even though the underlying severity hasn’t changed. That’s the point of Dimension 6: a clinically sound recommendation only helps a patient if it’s also one they can actually follow through with.

Once all six dimensions are assessed, the result is a specific point on the levels-of-care continuum, which we’ll explore next.

The ASAM levels of care

Once someone is evaluated across the six dimensions, that assessment determines their starting point on the levels of care below. The ASAM Criteria treats those levels as a continuum, not a set of disconnected programs, so patients move through them as their needs change. Decimal points mark gradations of intensity within four broad levels, and patients can step up or down as their dimensional risk changes on reassessment.

• Early Intervention — Education and brief intervention for people who show concerning substance use but don’t yet meet criteria for a diagnosable SUD. Under the Fourth Edition, this sits outside the specialty addiction treatment continuum, though it remains a licensed, billable service in many states.
• Level 1: Outpatient — Regularly scheduled counseling, typically less than nine hours a week.
• Level 2.1: Intensive Outpatient (IOP) — Nine to 19 hours a week of counseling and psychoeducation, clinically managed by clinicians and other addiction specialists rather than a physician.
• Level 2.5: High-Intensity Outpatient — At least 20 hours a week of structured treatment. (Often still called PHP, though ASAM now favors “high-intensity outpatient” since the service isn’t delivered in a hospital.)
• Level 3.1: Clinically Managed Low-Intensity Residential — 24-hour structured living with 9 to 19 hours a week of clinical services, the same intensity as IOP delivered in a residential setting.
• Level 3.5: Clinically Managed High-Intensity Residential — 24-hour care with a higher level of clinical intensity, for patients who need more structure to engage safely in treatment.
• Level 3.7: Medically Managed Residential — 24-hour care with daily medical monitoring, for patients whose acute medical or psychiatric needs, not just withdrawal, require closer oversight.
• Level 4: Medically Managed Intensive Inpatient — The highest level of care, for patients whose withdrawal or medical needs require 24-hour nursing and physician availability.

Many of these levels also have a co-occurring enhanced (COE) version, for patients whose psychiatric needs require a higher level of integrated care than the standard level provides. That reflects the Fourth Edition’s baseline expectation: every level of care should be equipped to treat co-occurring mental health conditions, not just refer them out to other providers or sites of care.

This list reflects the general shape of the adult continuum under the Fourth Edition and focuses on the throughline clinicians and families need to make sense of a placement recommendation. For the complete set of decimal-level distinctions and service specifications, refer to ASAM’s own published criteria.

Is the ASAM Criteria used for teens?

Yes, and as of 2026, adolescents have their own dedicated volume for the first time in the Criteria’s history. Since 1996, adolescent guidance had been folded into the same volume as adult criteria, with limited standalone direction. That changed with the release of The ASAM Criteria, Fourth Edition, Volume 2: Adolescents and Transition-Aged Youth, covering adolescents (under 18) and transition-aged youth (16 to 25), a range that reflects how substance use risk actually escalates through that period.

A few changes matter most for anyone placing or referring adolescents:

• Every level of care is now required to be co-occurring capable, meaning fully integrated mental health treatment rather than a referral out for psychiatric needs. This better reflects how adolescent substance use and mental health conditions actually present — together rather than separately.
• A new Level 1.0Y provides ongoing monitoring, recovery check-ins, and medication management for adolescents in stable remission, instead of discharging them without a plan.
• Level 3.1Y was eliminated. If a young person’s needs are severe enough to require residential-level oversight, the volume routes them to a medically focused level of care instead, reflecting how quickly medical and psychiatric complexity can develop at this age.
• Family engagement and coordination with schools, primary care, and where relevant, child welfare or juvenile justice, are built into every level, not treated as an add-on.

Adoption of the new adolescent-focused standards will take time. States and payors are still working through implementation timelines, and many will continue applying Third Edition standards for adolescents in the interim. But the standard itself has changed, and anyone placing or referring adolescents should know what it now says.

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Are there other frameworks?

The ASAM Criteria isn’t the only clinical framework relevant to substance use treatment. There’s also the DSM-5 and LOCUS, and understanding how the three work together matters for placing patients accurately. The DSM-5, published by the American Psychiatric Association, gives you a diagnosis, including substance use disorder, and tells you how severe it is. The ASAM Criteria, on the other hand, tells you what level of care a patient with a substance use disorder needs. LOCUS, or the Level of Care Utilization System, published by the American Association for Community Psychiatry, does the same thing ASAM does but for mental health placement instead of substance use.

The distinction between each framework matters most for co-occurring patients, who need both a diagnosis and a defensible level-of-care decision for both the mental health and substance use aspects of their care.

Why is the ASAM Criteria considered the standard?

Today, the ASAM Criteria is a shared language across addiction treatment, but it wasn’t always that way. In the 1980s, as managed care pushed providers and payors to control costs, addiction treatment had no shared way to decide where a patient belonged. Somewhere between 40 and 50 placement protocols existed, each built independently with no way to compare or validate them against each other. ASAM and the National Association of Addiction Treatment Providers combined the strongest elements of what existed into one unified set of criteria in 1991.

Over the following decade, federal agencies including NIDA, NIAAA, and SAMHSA funded research testing whether ASAM’s placement recommendations actually predicted how patients did in treatment, not just whether the logic held up on paper. That’s the difference between the ASAM Criteria and most of what it replaced: a proven track record, not just a consensus opinion. That’s the version providers, states, and payors converged on.

That track record is what makes it useful in day-to-day healthcare. When a clinician’s assessment and a payor’s authorization criteria are built on the same six dimensions, there’s less friction and less risk that a patient gets stuck between what they clinically need and what’s covered.

How Charlie Health can help

The right care for a patient with substance use concerns starts with knowing where they land on the ASAM continuum. Charlie Health’s Clinical Admissions Team uses ASAM-informed assessment to do exactly that. If you’re evaluating whether a patient needs more support than weekly outpatient therapy provides or a structured next step after residential or inpatient treatment, Charlie Health’s virtual Addiction Program for Teens & Adults offers more than 10 hours of weekly treatment, addressing substance use and co-occurring mental health conditions together. Call our Admissions Team or fill out our online form to refer a patient today.