An in-network program has a contract with your plan that limits what it can charge you for covered care. An out-of-network program has no contract, so your share is usually higher, may not count toward your yearly limit, and the program can often bill you the difference. Ask the plan about that exact program before admission.
What’s the difference between in-network and out-of-network rehab?
A plan’s network is the facilities and providers it has contracted with.1 The contract sets a price, called the negotiated rate or allowed amount,2 and limits what the program can bill you for covered services.3
| In network | Out of network | |
|---|---|---|
| Your coinsurance | Your normal in-network share | Usually higher, such as 40% of the allowed amount4 |
| Can the program bill you above the allowed amount? | Generally no, for covered services3 | Yes, unless a law or agreement bars it38 |
| Counts toward your out-of-pocket maximum? | Yes, for covered care | Not toward the in-network limit5 |
| Covered at all? | Yes, if the care is covered and approved | A PPO usually pays something; HMOs and EPOs generally pay only for emergencies6 |
If you’re not sure which kind of plan you have, see how PPO, HMO and EPO plans differ.
How much more does out-of-network rehab cost?
Often a lot more. Your coinsurance is a percentage of the allowed amount, not of the program’s full charge,24 and an out-of-network program can bill you for the rest.
In our worked example of a 21-day residential stay, the same care cost a family about $5,800 in network and up to about $27,540 out of network. Most of the gap came from a separate deductible, 40% coinsurance and an $18,900 balance bill. Those numbers are illustrative; real rates vary by plan and program.
You can try your own numbers below. The estimator uses one deductible and one allowed amount for both columns, so your real out-of-network share may be higher.
Compare your in-network and out-of-network share
CalculatorUse the numbers from your plan documents or your call with the insurer. This is a rough estimate, not a quote.
How it works: you pay the remaining deductible, then your coinsurance share, capped at your out-of-pocket maximum. Out of network, many plans have a separate (or no) cap, and the program may bill you for the difference between its charge and what the plan allows (“balance billing”).
What is balance billing, and when can a program do it?
Balance billing is when a provider bills you for the difference between its charge and what your plan allows. If a program charges $100 and the plan allows $70, the program may bill you the other $30.3
When you choose an out-of-network program, it can generally do this unless a state law or your agreement with the program says otherwise.8 Some states have their own surprise-billing laws, so it’s worth asking your state insurance department.8 Balance bills don’t count toward your out-of-pocket limit either,5 so the yearly cap won’t stop them.
Does the No Surprises Act protect us from an out-of-network rehab bill?
Usually not, if you chose the program. The federal law protects people with most private insurance from surprise out-of-network bills for emergency care, for some care during a visit to an in-network hospital or surgery center, and for air ambulances. It doesn’t apply when you go to an out-of-network facility.7
Two parts of it can still matter. If an out-of-network provider at an in-network hospital asks you to sign a “notice and consent” form, signing gives up your protections, and you can refuse. And if a provider leaves the network mid-treatment, people getting inpatient or other ongoing care may keep in-network rates for up to 90 days.7
People with Medicare or Medicaid were already protected from surprise bills by providers that take part in those programs.8 For them, the real question is whether a program accepts that coverage at all. See Medicaid or Medicare.
What if the plan said the program was in network, and it wasn’t?
You may be protected. Plans must keep their provider directories accurate and answer members’ questions about network status. If the plan wrongly told you a provider was in network, it can’t charge you more than in-network cost-sharing, and that amount counts toward your in-network deductible and out-of-pocket maximum.9
That covers what the plan told you, not what the program said. Be specific when you ask, because a program can be in network for outpatient care but not residential, or at one address but not another. Save a screenshot of the directory listing, and write down the date, the representative’s name and the reference number. Our page on what a benefits check does and doesn’t confirm goes into more detail.
What if no in-network program can meet our loved one’s needs?
Ask the plan to name in-network programs that offer the level of care the assessment recommends.
Chris’s parents found a residential program three states away that said it “accepts” their PPO. The plan said it was out of network. They asked for in-network residential programs that would continue Chris’s medication, and the plan named two within driving distance.
If the plan truly has nothing suitable, ask about a single-case agreement: a one-time arrangement between the plan and an out-of-network program to cover one person’s care. Plans differ on whether they’ll agree and on what terms, so ask early. Until you have it in writing, with the rate, dates, level of care and whether the program can bill you above that rate, budget as if out-of-network rules apply.
Federal parity law may help. For plans it applies to, if the plan covers medical care out of network, it must also cover addiction and mental health care out of network,1011 and network rules generally can’t be stricter for addiction care than for comparable medical care.10 It doesn’t reach every plan the same way; small-employer plans, for example, are covered only indirectly.10 If the plan says no, see how to appeal and raise a parity complaint.
What should we ask before choosing a program?
Call the plan first, since its answer is the one that counts.
Network questions for the plan and the program
- Ask the plan
- Ask the program
Be wary of a program that offers to “waive” your out-of-network deductible or coinsurance, or says your insurance “covers everything.” Read red flags in a program’s insurance pitch before you share insurance details.
Frequently asked questions
Can we negotiate a balance bill after treatment?
You can ask. Get an itemized bill and your plan’s explanation of benefits, compare them, and ask the program for a lower amount or a payment plan. If you think a bill breaks surprise-billing rules, CMS takes complaints through its No Surprises Help Desk.7
Could we skip insurance and pay the program directly?
You can, but get the price first. If you don’t use insurance, providers usually must give you a good faith estimate when you schedule care in advance or ask for one, and you may be able to dispute a bill that’s at least $400 more than the estimate.12 Ask the plan whether anything you pay directly counts toward your deductible.
Sources
- HealthCare.gov — Network (glossary). healthcare.gov/glossary/network/ — accessed Oct 2026
- HealthCare.gov — Allowed amount (glossary). healthcare.gov/glossary/allowed-amount/ — accessed Oct 2026
- HealthCare.gov — Balance billing (glossary). healthcare.gov/glossary/balance-billing/ — accessed Oct 2026
- HealthCare.gov — Out-of-network coinsurance (glossary). healthcare.gov/glossary/out-of-network-coinsurance/ — accessed Oct 2026
- HealthCare.gov — Out-of-pocket maximum/limit (glossary). healthcare.gov/glossary/out-of-pocket-maximum-limit/ — accessed Oct 2026
- HealthCare.gov — Health insurance plan & network types: HMOs, PPOs, and more. healthcare.gov/choose-a-plan/plan-types/ — accessed Oct 2026
- Centers for Medicare & Medicaid Services — Know your rights with insurance (No Surprises Act). cms.gov/initiatives/your-patient-rights/medical-bill-rights/know-your-… — accessed Oct 2026
- Centers for Medicare & Medicaid Services — No Surprises: Understand your rights against surprise medical bills. cms.gov/newsroom/fact-sheets/no-surprises-understand-your-rights-again… — accessed Oct 2026
- U.S. Departments of Labor, HHS and the Treasury — FAQs about Affordable Care Act and Consolidated Appropriations Act, 2021 implementation, Part 49 (August 20, 2021). cms.gov/cciio/resources/fact-sheets-and-faqs/downloads/faqs-part-49.pd… — accessed Oct 2026
- Centers for Medicare & Medicaid Services — The Mental Health Parity and Addiction Equity Act (MHPAEA). cms.gov/marketplace/private-health-insurance/mental-health-parity-addi… — accessed Oct 2026
- Centers for Medicare & Medicaid Services — Fact sheet: The Mental Health Parity and Addiction Equity Act of 2008 (MHPAEA). cms.gov/newsroom/fact-sheets/mental-health-parity-and-addiction-equity… — accessed Oct 2026
- Centers for Medicare & Medicaid Services — Medical bill rights (No Surprises Act). cms.gov/initiatives/your-patient-rights/medical-bill-rights — accessed Oct 2026