Partial Hospitalization Program (PHP) for Addiction Treatment
A Partial Hospitalization Program (PHP) is an intensive form of nonresidential addiction treatment. People attend structured treatment for much of the day but usually return home or to supportive recovery housing afterward.
PHP can provide substantially more treatment time and structure than standard outpatient care while allowing a person to remain outside a residential facility overnight.
Services may include individual and group therapy, addiction education, psychiatric care, medication management, family services, recovery-skills training, case management, and planning for the next level of care.
Under the current ASAM Criteria, the addiction-treatment level historically called Level 2.5 PHP is now referred to as High Intensity Outpatient. ASAM explains that PHP has not disappeared; the updated name better reflects that these services are intensive outpatient care and are not necessarily provided inside hospitals. ASAM
For a broader explanation of treatment levels, see how rehab works.
What Is a Partial Hospitalization Program?
A Partial Hospitalization Program is a highly structured outpatient level of addiction treatment that provides intensive services during the day without requiring the person to live at the treatment facility.
Many current PHP programs operate for several hours per day on multiple days each week. For example, current treatment-provider descriptions commonly report schedules resembling a full or substantial treatment day, often five or more days per week, although actual schedules vary by facility, state requirements, and individual needs. Hazelden Betty Ford Foundation
PHP may be used as someone's initial level of treatment when residential care is unnecessary, as a step-down after residential treatment, or as a more intensive option when lower-frequency outpatient treatment is not providing enough support.
Where Does PHP Fit in Addiction Treatment?
PHP sits within a broader continuum of addiction care.
Residential treatment provides overnight living and greater separation from the person's normal environment. PHP provides intensive daytime treatment but does not normally include overnight residence. Intensive outpatient programs provide fewer treatment hours, while standard outpatient care is typically less intensive still.
ASAM's current framework emphasizes choosing the least intensive level that can still safely and effectively meet a person's needs and reassessing as those needs change. Someone may move toward less intensive care as they stabilize or move to more intensive services if risks or symptoms increase. ASAM
Readers can compare this level with residential treatment or the planned intensive outpatient program guide.
Who May Benefit From PHP?
PHP may be appropriate for someone who needs considerable treatment structure but does not require round-the-clock residential or hospital-level care.
For example, a person may be medically stable after withdrawal management but still need frequent therapy, psychiatric support, medication management, and daily recovery structure.
PHP may also help someone transitioning out of residential treatment who is not yet ready for lower-intensity outpatient care.
Another important factor is what happens outside treatment hours.
Because PHP is nonresidential, the person's evening environment, transportation, family situation, access to substances, housing stability, and available support can affect whether this level of care is practical and safe.
ASAM's current level-of-care process specifically considers not only symptoms and clinical risks but also support in the person's current environment and person-centered barriers to treatment. ASAM
PHP should therefore not be selected simply because it is cheaper or more convenient than residential care.
How Does PHP Treatment Begin?
Admission should begin with an assessment of substance use, withdrawal risk, medical conditions, mental health, medications, previous treatment, living environment, support, and treatment goals.
ASAM's current framework uses an initial level-of-care assessment followed by more comprehensive treatment planning and repeated reassessment during care. Those reassessments help determine whether a person should remain at the current intensity, move to less intensive treatment, or receive more intensive care. ASAM
That means PHP should not be treated as an automatic fixed stage that everyone must complete.
It should be used when the person's current needs match that level of care.
What Happens During a PHP?
PHP generally provides a structured treatment day rather than one short therapy appointment.
Treatment may include individual counseling, clinician-led groups, recovery education, coping-skills work, psychiatric appointments, medication management, family services, case management, and planning for time outside the program.
Current PHP descriptions from major treatment providers also commonly include relapse-prevention work, mental-health care, peer interaction, and planning for the next level of treatment. Hazelden Betty Ford Foundation
A person's exact schedule should depend on their individualized plan rather than every patient attending exactly the same activities.
One practical advantage of PHP is that people can practice recovery skills outside the treatment environment each evening and then discuss challenges with the treatment team during subsequent sessions.
Does PHP Include Detox?
Not necessarily.
PHP and medical detox serve different purposes.
Withdrawal Management / Stabilization
Focuses on safely managing intoxication or withdrawal when medical support is needed.
PHP
Focuses on intensive ongoing addiction treatment while the person lives outside the facility.
Someone who is at risk for serious alcohol, benzodiazepine, opioid, or other withdrawal complications may need stabilization or another level of care before PHP is appropriate.
Some organizations may operate withdrawal-management services alongside PHP, but the presence of a PHP does not mean the program itself can manage every form of withdrawal.
Readers who are concerned about withdrawal can review drug detox programs.
PHP vs. Residential Treatment
Overnight Living + Treatment
Residential care includes overnight accommodation in the treatment environment and greater separation from daily-life triggers. It may be appropriate when a person needs a structured living environment or support that cannot safely be provided while they return home each evening.
Intensive Daytime Treatment
PHP provides high-intensity treatment during the day but allows the person to leave afterward. This makes the home or recovery environment particularly important.
A person may transition directly from residential treatment into PHP as clinical needs decrease.
Neither setting is inherently better. The appropriate choice depends on the person's current clinical and environmental needs.
PHP vs. Intensive Outpatient Program (IOP)
PHP and IOP are both nonresidential forms of addiction treatment, but PHP generally provides more treatment time and structure.
Current provider descriptions typically position PHP as full or near-full treatment days, while IOP involves shorter treatment periods that allow more time for work, school, family responsibilities, and independent daily activities. Hazelden Betty Ford Foundation
Someone may step down from PHP into an intensive outpatient program as stability and independent functioning improve.
The decision should be based on reassessment rather than simply reaching a predetermined number of days.
Can PHP Include Medications for Addiction?
Yes.
PHP can include medication management or coordination with outside prescribers when medication is appropriate.
For opioid use disorder, treatment may involve medications such as buprenorphine, methadone, or naltrexone. Alcohol use disorder treatment may include medications such as naltrexone or acamprosate.
The exact medication services depend on the program and its medical capabilities.
People who are already receiving evidence-based medication should ask whether the PHP will continue, prescribe, or coordinate that treatment before admission.
The medication-assisted treatment guide explains medication-based addiction care in more detail.
Can PHP Treat Mental Health Conditions Too?
Co-occurring depression, anxiety, PTSD, bipolar disorder, and other mental-health conditions are common among people receiving addiction treatment.
ASAM's Fourth Edition specifically treats co-occurring mental-health capability as an expected part of modern addiction treatment and includes enhanced levels for people who need more integrated psychiatric services. ASAM
PHP may therefore include psychiatric assessment, psychotherapy, medication management, safety planning, or other mental-health services.
However, capabilities differ substantially between programs.
Someone with significant psychiatric symptoms should confirm what clinicians are available, how emergencies are handled, and whether the program can actually provide integrated care.
For more information, see dual diagnosis treatment.
Does PHP Include Housing?
Usually, PHP itself is nonresidential.
A person may return to their own home after treatment each day or, in some cases, live separately in a recovery residence or sober-living environment.
The ASAM Fourth Edition allows a recovery residence recommendation to be paired with outpatient levels of care, including Level 2.5, when the person's recovery environment warrants additional housing support. ASAM
This distinction is important when comparing facilities.
If a provider advertises “PHP with housing,” ask whether the housing is part of a licensed treatment setting or a separate recovery residence, who supervises it, what services are available overnight, and what additional costs apply.
How Long Does PHP Last?
There is no universal PHP length.
Some current programs describe treatment lasting several weeks, while actual duration varies according to clinical progress, treatment goals, mental health, recovery environment, insurance authorization, and the services needed afterward. Hazelden Betty Ford Foundation
Current ASAM guidance recommends treatment length that responds to the person's progress and evolving needs instead of relying only on a predetermined duration. ASAM
The more useful question is not simply, “How many weeks does PHP last?”
What Happens After PHP?
PHP is usually one part of a broader treatment plan.
When someone needs less structure, they may transition to IOP, regular outpatient drug rehab, individual therapy, medication management, peer support, recovery housing, or another continuing-care service.
If symptoms or risks increase instead, reassessment may indicate that residential or another more intensive service is needed.
The goal is not simply to “graduate” through treatment levels.
The goal is to match the level of care to the person's changing needs over time.
How to Choose a PHP for Addiction Treatment
A PHP should be able to explain how it determines whether this level of care is appropriate.
How is PHP placement determined and reassessed?
Which clinicians provide treatment and individual care?
How are medications for substance use disorders provided or coordinated?
Are psychiatric services and integrated mental-health care available?
What is expected regarding transportation, home environment, housing, and after-hours crises?
How does the team decide when IOP, outpatient, or residential care is appropriate?
Ask how many hours and days treatment actually runs, because the PHP label alone does not tell you the exact schedule.
Ask which therapies are provided, how often individual treatment occurs, whether psychiatric services are available, and how medications for substance use disorders are handled.
Because the patient leaves treatment each day, also ask what the program expects regarding transportation, home environment, recovery housing, and after-hours crisis planning.
Finally, ask how progress is measured and how the team determines when someone needs IOP, outpatient treatment, residential treatment, or another level of care.
Does Insurance Cover PHP?
Health insurance may cover intensive outpatient substance use treatment, but specific PHP benefits depend on the plan and provider.
Marketplace plans must cover mental health and substance use disorder services as essential health benefits, but the exact covered services, networks, prior-authorization requirements, deductibles, copayments, and coinsurance vary. HealthCare.gov
A plan covering substance use treatment does not automatically mean every PHP, every duration, or every out-of-network facility will be covered.
Readers can use verify insurance for rehab to explore potential benefits or read how much rehab costs for broader payment information.
Frequently Asked Questions About PHP
What does PHP stand for in addiction treatment?
PHP stands for Partial Hospitalization Program. In current ASAM terminology, Level 2.5 is called High Intensity Outpatient, although PHP remains widely used by treatment programs and patients. ASAM
Is PHP inpatient or outpatient?
PHP is generally considered an outpatient/nonresidential level of care. Treatment is intensive, but patients do not normally stay overnight.
Do you sleep at a PHP facility?
Usually no. Patients generally return home or to separate supportive housing after treatment each day.
Is PHP more intensive than IOP?
Generally, yes. PHP usually provides more treatment hours and structure than IOP. Hazelden Betty Ford Foundation
Do you need detox before PHP?
Not always. The need for withdrawal management depends on the substance, withdrawal risk, health, and individual circumstances. Someone who cannot be safely managed at the PHP level may need stabilization first.
Can PHP include addiction medication?
Yes. Medication treatment can be incorporated or coordinated when clinically appropriate, although specific capabilities vary by program.
Can someone go directly into PHP without residential rehab?
Yes. Residential treatment is not a required first step for everyone. Level-of-care placement should be based on individual assessment.
Can PHP treat addiction and mental health together?
Many programs address both, but psychiatric capabilities vary. Ask specifically about integrated mental-health staffing and services.
How long does PHP last?
There is no universal length. Duration should reflect progress and changing treatment needs rather than one fixed schedule. ASAM
Explore Partial Hospitalization Treatment Options
A Partial Hospitalization Program may provide intensive addiction treatment without requiring an overnight residential stay.
Whether PHP is appropriate depends on substance use, withdrawal risk, medical and mental-health needs, living environment, available support, previous treatment, personal circumstances, and insurance.
Important Safety Information
This page provides general educational information about Partial Hospitalization Programs and addiction treatment. It is not a clinical level-of-care assessment or individualized treatment recommendation.
Some substance withdrawal can require medical supervision.
If an opioid overdose may be involved, give naloxone if available while emergency help is being contacted.
For a mental health, suicide, or substance-use crisis, call or text 988.