When a rehab says “we ran your benefits and you’re covered,” they’ve done a verification of benefits (VOB): a check of whether the plan is active, what your deductible and coinsurance are, and whether care needs prior authorization. It’s useful, but it isn’t a promise to pay. Plans still deny or limit payment after admission.
What is a verification of benefits?
Usually the program’s admissions or billing staff run it by contacting your loved one’s health plan. You can run the same check yourself by calling the member services or behavioral health number on the insurance card. What it does and doesn’t settle:
| A VOB usually tells you | A VOB does not tell you |
|---|---|
| Whether the plan is active today | Whether the plan will find the care medically necessary |
| Your deductible, coinsurance or copay, and how much is met | How many days the plan will approve |
| Whether the plan has benefits for a level of care, such as residential or outpatient | Whether this program is in network at this address, for this level of care, unless you ask that exact question |
| Whether prior authorization is required | What you’ll owe if the plan stops approving days, or what an out-of-network program may bill above the plan’s rate |
Why isn’t a VOB a guarantee of payment?
Because payment gets decided as the stay goes on, not on the first phone call. The plan judges medical necessity by its own criteria. Federal parity law limits how it applies those rules to addiction treatment compared with medical care, but doesn’t stop it from using them.12 A plan may also approve a limited number of days, then review the stay before approving more, and any review can end in a denial. Our page on how plans decide how many days to approve explains that process.
Other big bills come from plainer problems: a premium went unpaid and coverage lapsed, or the plan simply doesn’t cover something, such as a certain residential setting or out-of-state care.
What does “we take your insurance” actually mean?
It can mean the program is in network. It can also mean only that the program will bill your plan as an out-of-network provider, and that costs far more. Out of network, coinsurance is usually higher,9 what you pay doesn’t count toward your in-network out-of-pocket maximum,3 and unless state law bans it, the program can bill you the difference between its charge and what the plan paid.4 An HMO generally won’t pay for out-of-network care at all except in an emergency.8 Federal surprise-billing protections generally don’t apply when you choose an out-of-network treatment program.4 Our page on in-network versus out-of-network care works through the numbers.
On the admissions call, vague questions get vague answers. Ask it this way:
Ask the question that gets a real answer
“Do you take our insurance?”
“Are you in network with [plan name and ID] for residential care at this address?”
“So we’re covered?”
“Is this level of care covered, and does it need prior authorization? Who requests it?”
“What will it cost us?”
“Can you email us a written estimate based on our plan’s benefits?”
Should we trust the program’s check or call the plan ourselves?
Do both. The program’s VOB is a fair start, but the program has a stake in the admission, and secondhand answers tend to lose details like which location is in network.
Also make sure you know who you’re talking to. The Federal Trade Commission warns that top search results for treatment are often paid ads, and some businesses advertise under real treatment centers’ names with their own phone numbers.5 Get the facility’s legal name and address before you hand over an insurance ID. Be wary of anyone who says you won’t owe a thing before checking your deductible and network status, who routinely waives deductibles or copays, or who offers free travel or housing in exchange for your insurance details. There are more warning signs here.
When you call the plan, know that if the policy is in your loved one’s name, the plan may need them on the line or their written permission before it will talk to you. If its answers differ from the program’s, ask the program to explain before anyone signs. The Insurance Call Checklist has the full question list and a printable call log; this is the short version.
Double-check the program's VOB
- Have ready
- Ask the plan
- Write down
What should we get in writing before admission?
The cost estimate, based on your plan’s in- or out-of-network benefits rather than the program’s list price, and the financial agreement, which says who pays if the plan denies days or the whole claim. Before signing, ask: “If the plan approves only part of the stay, will we owe the rest, and at what daily rate?” Keep a copy of everything you sign and every letter the plan sends. If the numbers don’t work, look at public and low-cost options.
One thing a pending VOB shouldn’t hold up is medical care for withdrawal; see when withdrawal needs medical care.
Frequently asked questions
Is a VOB the same as prior authorization?
No. Prior authorization (also called preauthorization or precertification) is the plan’s decision that a specific service is medically necessary. A VOB only tells you whether the plan requires it. Even an approval isn’t a guarantee the plan will cover the cost.7
Do we need a VOB if we don't have insurance?
No, but you still want a cost estimate. If your loved one is uninsured or paying without insurance, in most cases they can get a good faith estimate before care starts.4 The free, confidential SAMHSA National Helpline, 1-800-662-4357, can refer you to your state office for state-funded treatment and often to programs that charge on a sliding fee scale.6
What if the plan denies payment after treatment has started?
The plan must tell you in writing why it denied the claim,10 and under parity law you can ask for the medical-necessity criteria it used.2 If waiting for a standard appeal could seriously harm your loved one’s health, ask for an expedited (urgent) appeal.10 Our page on appealing a denial walks through the steps.
Sources
- 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
- HealthCare.gov — Out-of-pocket maximum/limit (glossary). healthcare.gov/glossary/out-of-pocket-maximum-limit/ — 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
- Federal Trade Commission — How to avoid scams when looking for drug treatment (August 2025). consumer.ftc.gov/consumer-alerts/2025/08/how-avoid-scams-when-looking-… — accessed Oct 2026
- SAMHSA — National Helpline. samhsa.gov/find-help/helplines/national-helpline — accessed Oct 2026
- HealthCare.gov — Preauthorization (glossary). healthcare.gov/glossary/preauthorization/ — accessed Oct 2026
- HealthCare.gov — Health Maintenance Organization (HMO) (glossary). healthcare.gov/glossary/health-maintenance-organization-hmo/ — accessed Oct 2026
- HealthCare.gov — Out-of-network coinsurance (glossary). healthcare.gov/glossary/out-of-network-coinsurance/ — accessed Oct 2026
- HealthCare.gov — Internal appeals. healthcare.gov/appeal-insurance-company-decision/internal-appeals/ — accessed Oct 2026