Loved & Sober
Treatment Basics · Evidence-based

What Is a PHP (Partial Hospitalization Program)?

The most intensive treatment that still lets someone sleep at home — how it works, and where it fits on the ladder.

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Loved & Sober Editorial Team Last reviewed Aug 4, 2026 ~6 min read Independently sourced
The short version

A PHP (Partial Hospitalization Program) is structured, full-day treatment for addiction or mental health — typically around 20 or more hours a week, most of the day, about five days a week — while still living at home. Despite the name, no one is "hospitalized": it's a day program (you'll also hear "day treatment"). On the ASAM levels of care it's Level 2.5 — the step between an intensive outpatient program (IOP) and residential/inpatient care. (Not to be confused with PHP the programming language — this page is about the treatment program.)

Key takeaways
  • A PHP is day treatment: most of the day, about 5 days a week — home in the evenings.
  • ASAM Level 2.5 — more intensive than an IOP (2.1), less than residential (3+).
  • Core ingredients: group and individual therapy, education, and closer medical/psychiatric oversight than an IOP — including medication management.
  • Research on day-hospital treatment finds it can be a real alternative to admission for many people — the goal is the right level, not the maximum level.
  • Commonly used stepping down from inpatient or stepping up from IOP; insurance often covers it as a recognized level of care.

01 What "partial hospitalization" actually means

The name is the most confusing thing about it. A PHP involves no hospital stay: it's an intensive day program. You attend treatment for most of the day — therapy groups, individual sessions, education — and then go home for the evening and night. Many programs and clinicians simply call it day treatment.

"Partial hospitalization" survives as the formal term because of how the level is defined and billed: it delivers a hospital-adjacent intensity of care — including psychiatric and medical oversight — without the bed.

02 What a week in a PHP looks like

Programs vary, but a typical PHP week means around 20 or more hours, spread over roughly five weekdays, most of each day. Inside those hours:

  • Group therapy — usually the backbone, several sessions a day.
  • Individual counseling with a dedicated therapist.
  • Education and skills — understanding addiction and mental health, relapse-prevention, coping tools.
  • Psychiatric care — evaluation and medication management, typically with more frequent access than an IOP offers.
  • Medical monitoring appropriate to the person's needs.

Evenings, nights, and weekends are lived at home — which is the point: practicing recovery in real life, with intensive support during the day.

03 Where a PHP fits: the levels of care

On the ASAM Criteria continuum:

  • Outpatient (Level 1) — weekly or less.
  • IOP (Level 2.1) — ~9–19 hours, a few days a week. See What Is an IOP?
  • PHP (Level 2.5) — ~20+ hours, most days. You are here.
  • Residential / Inpatient (Level 3+) — live on-site, 24/7 support.

In practice a PHP is most often a step down from residential or inpatient care — keeping the structure while re-entering home life — or a step up when weekly therapy or an IOP isn't holding. The side-by-side comparison lives in IOP vs PHP. Matching the level to the person's actual needs is itself evidence-based practice (ASAM criteria validity research).

04 Does day treatment work?

The best-known evidence comes from psychiatric care: a Cochrane systematic review of day-hospital treatment found that for a substantial share of people who would otherwise be admitted, day treatment produced outcomes comparable to inpatient admission. That research is from psychiatric day hospitals rather than addiction-specific PHPs, so it's worth holding loosely — but the practical lesson carries: more restrictive is not automatically more effective. What matters is whether the level of care matches the need.

For the neighboring level down, reviewers reached a similar conclusion about IOPs (evidence assessment) — covered in detail in our IOP guide.

05 Who a PHP fits — and who it doesn't

A PHP tends to fit when someone needs near-daily structure and medical or psychiatric oversight, but has a safe, stable place to sleep that supports recovery. Many PHPs are dual-diagnosis capable — treating mental health and substance use together (see What Is Dual Diagnosis?).

It's usually not the right level when there's a significant medical withdrawal risk or a need for 24/7 supervision — those point to detox or residential care first — or, at the other end, when a lighter level would genuinely do. Which level fits is a clinical decision, made with a qualified professional, not a bigger-is-better purchase.

06 Cost, insurance, and finding a PHP

PHP is a recognized level of care, and many insurance plans cover it; specifics depend on the plan and program, so confirm both before starting. To search independently, the government-run FindTreatment.gov lists programs by level of care near you. In a crisis, call or text 988, or call 1‑800‑662‑HELP (4357) — SAMHSA's free, confidential, 24/7 helpline.

Frequently asked questions

Is a PHP the same as being hospitalized?
No — despite the name, a PHP is a day program. You attend treatment for most of the day and go home in the evening; there is no overnight stay.
What's the difference between a PHP and an IOP?
Intensity. A PHP runs around 20+ hours a week, most of the day most days (ASAM Level 2.5); an IOP runs roughly 9–19 hours a few days a week (Level 2.1). Both let you live at home.
How long does a PHP last?
Commonly a few weeks, followed by a step down to an IOP or standard outpatient care as things stabilize — but length depends on the program and the person’s needs.
Does insurance cover a PHP?
Often yes — partial hospitalization is a recognized level of care under most US health plans. Confirm the specifics with both the program and your insurer.
Can a PHP treat mental health and addiction together?
Many can — programs described as dual-diagnosis capable treat co-occurring mental-health and substance-use conditions in one integrated plan. Ask directly whether both are addressed by the same team.

Related guides

Keep reading
01

IOP vs PHP

What's the difference. 02

What Is an IOP?

Intensive outpatient programs, explained simply. 03

What Is Dual Diagnosis?

When addiction and mental health overlap.

Sources

  1. The ASAM Criteria — levels of care — asam.org
  2. Day Hospital versus Admission for Acute Psychiatric Disorders — Cochrane Systematic Review (2011) — PMID 22161384
  3. Substance Abuse Intensive Outpatient Programs: Assessing the Evidence (2014) — PMID 24445620
  4. Predictive Validity of the ASAM Patient Placement Criteria (2003) — PMID 15991591
  5. SAMHSA National Helpline & FindTreatment.gov — findtreatment.gov
Educational information, not medical advice. Which level of care fits is a clinical decision — talk to a qualified professional. In an emergency call 911. See our Medical Disclaimer and Editorial & Sourcing Policy. Last reviewed: August 4, 2026.