Reference

ASAM levels of care explained

Published January 8, 2025 · 7 min read · Updated April 2026

Reviewed for accuracy by licensed clinical professionals.

The American Society of Addiction Medicine (ASAM) defines treatment levels that guide placement based on clinical need.

Levels

0.5: Early intervention. 1.0: Outpatient services. 2.1: Intensive outpatient (IOP). 2.5: Partial hospitalization (PHP). 3.1: Clinically managed low-intensity residential. 3.5: Clinically managed high-intensity residential. 3.7: Medically monitored residential. 4.0: Medically managed intensive inpatient.

How placement works

Six dimensions assess patient needs: withdrawal, medical, emotional/behavioral, treatment acceptance, relapse potential, and recovery environment. Higher severity across dimensions indicates higher level of care.

Why it matters

Insurance uses ASAM criteria for authorization. Understanding levels helps you advocate for appropriate treatment.

Authoritative sources

This article references guidelines from: SAMHSA · NIDA · ASAM

Frequently asked questions

What are ASAM levels of care?

A standardized system from Level 0.5 (early intervention) through Level 4.0 (medically managed inpatient) based on clinical need.

How is the right level determined?

Six clinical dimensions are assessed: withdrawal risk, medical conditions, emotional state, treatment acceptance, relapse risk, and environment.

Does insurance use ASAM criteria?

Yes. Most insurers use ASAM criteria to determine appropriate level of care and authorization decisions.

Disclaimer: Informational only. Not medical advice. SAMHSA: 1-800-662-4357.