The level 0.5 is designed to help those with a high likelihood of developing a drug use disorder, but who do not satisfy the diagnostic criteria. This level emphasizes the prevention of addiction and awareness via education and strategies for behavioral change.

Key Components:

• Education: Information about the potential risks and consequences of using substances
• Risk Assessment: Recognizing behaviors and situations that could cause the use of substances
• Support Groups: Peer-led groups designed to encourage healthy lifestyles and taking responsibility

Level 1 is a structured program of support for those with mild to moderate problems with addiction to drugs. This allows flexibility and is often the first stage in treatment that is formal or an alternative to higher-level care.

Typical Services Include:

• Counseling: Group or individual sessions that promote change in behavior
• Educational Groups: Courses to increase understanding of addiction and the process of recovery
• Treatment with Medication: Medical therapy of cravings and co-occurring disorders

Mid-level care provides more extensive procedures than traditional outpatient therapy but doesn't require 24-hour monitoring.

2.1 - Intensive Outpatient Program (IOP):

• Hours: 9-20 hours/week
• Regular therapy sessions, continuing work or education, and building up skills.

2.5 - Partial Hospitalization Program (PHP):

• Hours: 20+ hours/week
• The focus is structured, with all-day treatment that includes medical supervision, ideal for patients transitioning away from hospitalization.

They allow deeper emotional engagement, while people stay in their homes or community settings.

Level 3 provides 24-hour support within a well-structured and therapeutic setting. This is ideal for those suffering from severe to moderate substance abuse disorders and co-occurring mental health issues.

Key Features:

Sublevels (e.g., 3.1, 3.5, 3.7) vary in intensity according to the medical requirements and functional needs and provide a comfortable environment to stabilize and change behavior.

The highest degree of care, Level 4, is for those in need of immediate stabilization of their psychiatric or medical condition because of the seriousness of their drug use problem.

Program Highlights:

• The setting: A hospital or clinical space
• Duration is determined by medical need (short-term or prolonged)
• Care: 24 hours a day, 7 days a week, detoxification, and psychiatric assistance.

It is vital for those suffering from severe withdrawal symptoms, co-occurring diseases or any other medical problems that require continuous medical monitoring.