TRUSTED CONTENTMoney is the second question almost every caller asks, and often the first thing that stops someone getting care. A person can be clinically appropriate for treatment, motivated, and ready to go, and still not get there because nobody explained what their plan covers or how to find out. Understanding coverage is not an administrative skill sitting alongside the clinical work. It is part of getting people into treatment.
This guide covers how paying for addiction treatment works in the United States: who pays, what the cost-sharing terms actually mean, how a plan decides whether to approve care, what to do when it says no, and the payment plans, sliding scales and assistance available to people whose coverage will not stretch.
Who this is for, and how to read it
New to behavioral health. Read straight through and skip every green dashed box. The main text is complete on its own and assumes no prior knowledge of health insurance.
Already working in treatment or admissions. The green dashed boxes cover what has changed recently, and several things have. Medicare gained a benefit it never previously had. The federal parity regulations are in an unusual state. If your working knowledge dates from before 2024, check those boxes carefully.
One caution that applies to everyone: nothing here tells you what a specific plan covers. Plans vary enormously, including between two policies from the same insurer. The purpose of this guide is to teach you what questions to ask and how to read the answers, not to let you predict coverage.
This guide describes the United States system specifically. The cost-sharing concepts in the second lesson apply anywhere private health insurance exists, but everything else is country-specific.
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Who pays for treatment in the United States
Before anything else, establish which of these a person has. Almost every rule that follows depends on it, and people frequently do not know which category they fall into.
Employer coverage
The largest single source. Splits into fully insured plans, regulated by the state, and self-funded plans, where the employer pays claims directly and federal law governs. The distinction matters for appeals.
Marketplace and individual plans
Bought directly or through a state or federal exchange. Must cover substance use disorder treatment as an essential health benefit.
Medicaid
State-administered coverage for people with low incomes. Rules, benefits and provider networks differ substantially by state, and it is often the largest payer for addiction treatment in a given state.
Medicare
Mainly for people 65 and over, and for some younger people with disabilities. Covers less of the addiction treatment continuum than most people expect.
TRICARE, CHAMPVA and VA care
For service members, retirees, certain family members, and veterans. Separate systems with their own rules.
Self-pay and public funding
Paying directly, or accessing state-funded treatment slots, block grant funded services, and facility scholarships.
The lessons
How coverage is structured, and why it decides everything else
There is no single American health system. There are several, running in parallel, with different rules, different regulators, and different appeal routes. The first thing to establish about any caller is which system they are in, because the answer to almost every subsequent question depends on it.
Fully insured versus self-funded
This is the distinction most people in the field miss, and it matters more than almost anything else about a commercial plan.
In a fully insured plan, the employer buys a policy from an insurance company, and the insurer takes the financial risk. These plans are regulated by the state insurance department, so state mandates apply and the state is where complaints go.
In a self-funded plan, the employer pays claims out of its own money and hires an insurer only to administer the plan. Roughly two thirds of covered employees are in these. The insurer’s name is on the card, so members almost never know. Self-funded plans are governed by federal law under ERISA, state mandates do not apply, and complaints go to the federal Department of Labor rather than the state.
The practical consequence: a state law requiring coverage of a particular level of care does not reach a self-funded plan. If someone tells you “my state requires them to cover residential,” that may be true and still not apply to them.
What the Affordable Care Act requires
Individual and small group plans must cover ten categories of essential health benefits, and mental health and substance use disorder services are one of them. That is a genuine floor: those plans cannot simply exclude addiction treatment.
Large group and self-funded plans are not bound by the essential health benefits requirement. In practice nearly all cover some addiction treatment, but the obligation comes from elsewhere, which the parity lesson covers.
In practice
Ask to see the card, both sides. It usually names the plan type, the behavioral health administrator, which is often a different company from the medical insurer, and the member services number. Behavioral health is frequently carved out to a separate vendor, and calling the medical number gets you the wrong answers.
Knowledge check: why does it matter whether a plan is self-funded?
- Self-funded plans never cover addiction treatment
- Self-funded plans always have lower deductibles
- State insurance mandates do not apply, and appeals go to a federal regulator
- Self-funded plans are exempt from all federal law
Answer: state mandates do not apply and oversight is federal. Self-funded plans are governed by ERISA, so a state coverage requirement does not reach them.
What a person actually pays: the five terms that decide it
People routinely say a plan “covers” treatment when they mean the plan will pay something toward it. The gap between those two things is where families get into financial trouble, and it is entirely predictable from five numbers.
Premium
The monthly cost of having the plan at all. Paid whether or not any care is used, and it does not count toward anything else below.
Deductible
The amount the person pays before the plan starts paying its share. Resets each plan year, which is often but not always January. Someone admitted in late December can cross two deductibles in three weeks.
Copay
A fixed amount per service, such as $30 per outpatient session. Predictable, and usually the smallest number in the list.
Coinsurance
A percentage of the cost, paid after the deductible. Twenty per cent of an outpatient session is manageable. Twenty per cent of a residential stay is not, and this is where most unexpected bills come from.
Out-of-pocket maximum
The ceiling. Once the person’s own spending on covered, in-network care reaches it, the plan pays 100 per cent for the rest of the plan year. This is the single most useful number for a family facing a long admission, and almost nobody knows theirs.
Working it through
Take a plan with a $3,000 deductible, 20 per cent coinsurance, and a $9,000 out-of-pocket maximum, and a residential admission billed at $30,000 in network. The person pays the first $3,000. Of the remaining $27,000, their 20 per cent share would be $5,400, bringing them to $8,400. That sits under the $9,000 ceiling, so $8,400 is what they owe. Had the stay been longer, they would have hit $9,000 and paid nothing further that year.
Two things break this arithmetic. Out-of-network care is usually counted against a separate, higher out-of-pocket maximum, or none at all. And anything the plan does not consider a covered service does not count toward the maximum at all, no matter how much it costs.
The question worth asking
“How much of your out-of-pocket maximum have you already met this year?” If someone has had a significant medical year, treatment may cost far less than they fear. If the plan year is about to reset, timing an admission by a fortnight can change the cost by thousands.
Knowledge check: which figure tells a family the most about a long residential admission?
- The monthly premium
- The outpatient copay
- The deductible
- The out-of-pocket maximum
Answer: the out-of-pocket maximum. It caps what they can be asked to pay for covered in-network care in a plan year, so it is the realistic worst case.
Networks, out-of-network care, and surprise bills
A network is the set of providers a plan has contracted with. Contracted providers accept a negotiated rate and cannot bill the patient for the difference between that rate and their list price. Everything about cost changes at the network boundary.
Out-of-network care
Some plans pay a reduced share for out-of-network providers. Many plans, particularly HMO and EPO designs, pay nothing outside the network except in emergencies. When a plan does pay, it pays a percentage of what it considers a reasonable rate, not a percentage of the bill. The provider can then bill the patient for everything left over, which is called balance billing. This is how a family with apparently good insurance ends up owing tens of thousands.
The No Surprises Act
Federal protections that took effect in 2022 stop balance billing in specific situations: emergency care, and care from an out-of-network provider at an in-network facility, such as an anaesthetist a patient never chose.
Understand what it does not do. It does not protect someone who chooses an out-of-network residential program. That is a decision the person made, so the protections do not apply. Anyone considering an out-of-network admission needs the cost in writing beforehand.
The same law does something else that is easy to miss: it gives uninsured and self-pay patients a right to a written good faith estimate before scheduled care, with a federal route to dispute a bill that lands well above it. That is covered in the lesson on paying for treatment.
Single case agreements
A single case agreement is a one-off contract between a plan and an out-of-network provider for one patient, paying at something close to in-network terms. Plans agree to them when they have no in-network provider who can meet the need, which is common for specialist services, particular languages, adolescent care, or simple geographic gaps. They are not advertised and generally have to be requested by the provider, with the argument being that the network cannot deliver adequate care. It is always worth asking whether one has been sought.
Language note
“In network” is not a quality judgment and neither is “out of network.” A facility can be excellent and out of network, or in network and poor. Never let a caller infer quality from network status, and never imply it in written content.
Knowledge check: does the No Surprises Act protect someone who picks an out-of-network residential program?
- Yes, it covers all out-of-network care
- No, it covers emergencies and out-of-network providers at in-network facilities
- Yes, but only for residential treatment
- Only if the plan is self-funded
Answer: no. The protections address situations where the patient had no meaningful choice. A chosen out-of-network admission needs a written cost estimate in advance.
Medical necessity, prior authorization, and continued stay
Coverage of a service and approval of a specific admission are two different things. A plan can cover residential treatment in principle and still decline to pay for this person, at this facility, on this date, because it does not consider that level of care medically necessary for them.
How medical necessity is judged
Most major payers assess substance use disorder placement against The ASAM Criteria. This is why the clinical assessment and the coverage decision are linked: the same six dimensions that produce a clinical recommendation are what the payer’s reviewer reads. Documentation that clearly evidences the dimensions is not bureaucratic padding, it is what secures the authorization.
Prior authorization
Approval obtained before care begins. The facility’s utilization review staff present the clinical picture and the plan approves an initial period, often a set number of days rather than the whole episode. Care delivered without prior authorization where it was required is frequently not paid, even when it was clinically appropriate.
Concurrent review
During an admission the plan reassesses at intervals, commonly every few days at higher levels of care, and authorizes more days or declines to. This is why people are sometimes discharged from residential treatment sooner than everyone expected. The clinical team did not change its mind; the payer stopped authorizing.
Peer-to-peer review
When a reviewer is minded to deny, the treating clinician can usually request a conversation with the plan’s physician reviewer. A well-prepared peer-to-peer overturns a meaningful share of denials, and it happens before the formal appeal process starts.
What to tell families
Never promise a length of stay. Authorization is granted in increments and reviewed throughout. Saying “insurance approved 30 days” when the plan authorized five is the single most damaging thing an admissions conversation can get wrong, and families remember it.
Knowledge check: what usually explains a residential discharge that comes sooner than expected?
- The deductible was met
- The facility lost its accreditation
- Concurrent review stopped authorizing further days
- The No Surprises Act capped the stay
Answer: concurrent review. Plans authorize in increments and reassess during the admission, so approval can stop before the clinical team would have discharged.
Parity: what the law requires, and what it does not
The Mental Health Parity and Addiction Equity Act, usually shortened to MHPAEA and dating from 2008, is the most misunderstood law in this field. Understanding its actual shape lets you tell a caller something useful instead of something wrong.
What it does
Where a plan covers mental health and substance use disorder benefits, it may not impose restrictions on them that are more restrictive than those applied to medical and surgical benefits. That covers:
- Quantitative limits. Copays, deductibles, coinsurance, visit caps and day limits.
- Non-quantitative treatment limitations, known as NQTLs. The harder-to-see restrictions: prior authorization requirements, medical necessity standards, network admission criteria, and how provider rates are set. Most real-world parity problems live here.
What it does not do
It does not require any plan to cover addiction treatment. It is a comparison rule, not a coverage mandate. A plan covering nothing for mental health and substance use is not violating parity, though other law such as the essential health benefits requirement may still compel coverage.
It also does not apply everywhere. Medicare is not subject to it. Neither are most short-term limited-duration plans or health care sharing ministries, which is one reason those products are risky for someone who may need treatment.
What a parity problem looks like in practice
Rarely an explicit rule. Usually a pattern:
- Residential addiction treatment needs prior authorization while comparable medical admissions do not.
- Concurrent review happens every three days for addiction treatment and weekly for medical care.
- Behavioral health provider reimbursement is set so low that few join the network, leaving a directory that looks adequate and a network that is not.
- Medical necessity standards for addiction treatment are stricter than the equivalent medical standards.
Refresher — current regulatory position
The federal departments issued a final rule in September 2024 adding requirements around NQTLs, including comparative analysis obligations. An industry group challenged parts of it in court.
In May 2025 the departments announced they would not enforce the portions of the 2024 rule that were new relative to the earlier 2013 rule, pending the litigation and for a period afterwards, and indicated they intend to propose revised regulations. Plans were directed to continue relying on the 2013 regulations and prior guidance.
The statute itself remains in force, as do the comparative analysis requirements that Congress added through the Consolidated Appropriations Act, 2021. This is an evolving situation with further rulemaking expected, so verify the current position before relying on it in writing.
What to say to a caller
You can tell someone that parity law exists and that a plan generally cannot treat addiction treatment worse than comparable medical care. Do not tell them their plan is breaking the law, and do not promise an outcome. Point them to their plan documents, their state insurance department if the plan is fully insured, or the federal Department of Labor if it is self-funded.
Knowledge check: does parity law require a plan to cover addiction treatment?
- No, it requires equal treatment where such benefits are covered
- Yes, all plans must cover residential treatment
- Yes, but only for opioid use disorder
- Only for plans bought on the marketplace
Answer: no, it is a comparison rule. Coverage mandates come from elsewhere, such as the essential health benefits requirement for individual and small group plans.
Medicaid, Medicare, and military coverage
Medicaid
In many states Medicaid is the largest payer for addiction treatment. Benefits, provider networks and administration vary substantially by state, and most enrollees receive care through managed care organizations rather than the state directly. Cost-sharing is minimal or absent, which makes Medicaid the most financially accessible coverage a person can have. Its limitation is access rather than cost: fewer facilities accept it, and waiting lists are longer.
One structural quirk shapes residential availability. A longstanding federal rule, the institutions for mental diseases exclusion, generally bars federal Medicaid payment for adults aged 21 to 64 in residential facilities above a certain size. Many states have obtained waivers allowing payment anyway, and this is a live area of state-by-state variation. Never assume the position from one state applies in another.
Medicare
Medicare covers less of the addiction continuum than most people assume:
- Part A covers inpatient hospital care, including hospital-based withdrawal management. Care in a freestanding psychiatric hospital carries a 190-day lifetime limit, which does not apply to psychiatric units within general hospitals.
- Part B covers outpatient treatment, partial hospitalization and, since 2024, intensive outpatient services, generally with a deductible and 20 per cent coinsurance.
- Part D covers medications, including buprenorphine and naltrexone.
- Residential addiction treatment is not a covered Medicare benefit. This surprises families constantly and is worth stating plainly and early.
TRICARE, CHAMPVA and the VA
TRICARE covers substance use disorder treatment across the continuum for service members, retirees and eligible family members, with its own authorization rules and provider certification requirements. Veterans may receive care directly through VA facilities or through community care arrangements when the VA cannot provide it in a reasonable time or distance. These are distinct systems and their rules do not mirror commercial insurance.
Refresher — changed in 2024
Medicare began covering intensive outpatient services on 1 January 2024, following the Consolidated Appropriations Act, 2023. Before that, Medicare paid for ordinary outpatient therapy and for partial hospitalization but had nothing in between, leaving a real gap in the middle of the continuum.
The benefit is limited by setting. It is payable in hospital outpatient departments, community mental health centers, federally qualified health centers, rural health clinics, and opioid treatment programs for opioid use disorder. Freestanding addiction treatment facilities cannot bill Medicare for it. If your knowledge of Medicare predates 2024, this is the change to absorb.
Knowledge check: which is not a covered Medicare benefit?
- Outpatient therapy
- Residential addiction treatment
- Partial hospitalization
- Medication for opioid use disorder
Answer: residential addiction treatment. Medicare covers inpatient hospital care, outpatient, partial hospitalization, intensive outpatient since 2024, and medications, but not residential.
When coverage is denied
A denial is the start of a process, not the end of one. A meaningful proportion of denied behavioral health claims are overturned when appealed, and a great many are never appealed at all.
Read the denial properly
A denial must state a reason, and the reason determines the response. “Not medically necessary” is a clinical argument to be answered with clinical documentation. “Out of network” is a network question and may point toward a single case agreement. “No prior authorization” may be curable retrospectively. “Not a covered benefit” is the hardest, because it is about the contract rather than the person. Do not start appealing until you know which one you are facing.
Internal appeal
The first formal step, reviewed by the plan itself. Deadlines are real and short, so diarize them. Expedited appeals exist where waiting would jeopardize health, which frequently applies in addiction treatment. Ask for the specific criteria the plan applied; members are generally entitled to the clinical criteria used in the decision.
External review
If the internal appeal fails, most plans must offer review by an independent organization with no stake in the outcome, and its decision binds the plan. Where you file depends on the plan type, which is where the fully insured and self-funded distinction from the first lesson becomes practical.
What strengthens an appeal
- Clinical documentation mapped explicitly to the ASAM dimensions, not a general narrative.
- A letter of medical necessity from the treating clinician addressing the stated denial reason directly.
- Evidence of what was tried at lower levels of care and why it was insufficient.
- The plan’s own criteria, quoted, with the reasons the person meets them.
- Dated records of every call: who, when, what was said, reference number.
Staying in your lane
Non-clinical staff can explain the process, track deadlines, gather paperwork, and make sure nothing lapses. Clinical arguments belong to clinicians, and legal advice to lawyers. Explaining how appeals work is genuinely valuable and entirely within scope.
Knowledge check: what is the first thing to establish about a denial?
- Whether the facility is accredited
- How much the deductible was
- Whether the person has another policy
- The stated reason for the denial
Answer: the stated reason. A medical necessity denial, a network denial and a benefit exclusion each need an entirely different response.
Paying for treatment: plans, sliding scales, and what you can negotiate
Plenty of people have no coverage, or coverage that will not reach the care they need, or a share of the bill they cannot pay in one go. They still have options, and knowing them is often the most useful thing you can offer. Take these roughly in order: reduce what is owed first, then arrange how it is paid.
First, reduce what is owed
Check Medicaid eligibility first
People routinely assume they do not qualify when they do, particularly after a job loss, and income thresholds differ by state. This is the single highest-value check for someone uninsured, and it costs one conversation.
State-funded and grant-funded treatment
Every state receives federal block grant funding for substance use services and directs it toward people who are uninsured or underinsured. State substance abuse agencies maintain lists of funded providers. Waiting lists are common, but priority admission usually exists for people who are pregnant or who inject drugs.
Sliding scale fees
Many community providers and federally qualified health centers set fees against income. This is standard practice in community-based care rather than an unusual concession.
Facility scholarships and self-pay rates
Some private facilities hold scholarship beds or reduce rates for direct payers. Self-pay rates are frequently well below the billed rate charged to insurers, and are often negotiable, particularly for payment in advance.
Medication-focused treatment
Office-based buprenorphine treatment or an opioid treatment program costs a fraction of residential care and, for opioid use disorder, is strongly supported by evidence. For someone facing an impossible bill, this is a genuine clinical option rather than a consolation prize.
Get the estimate in writing, because it is a legal right
Anyone who is uninsured, or who has insurance but is choosing not to use it, is entitled to a written, itemized good faith estimate of expected charges before scheduled non-emergency care. This is a federal requirement, it covers substance use and mental health services explicitly, and a verbal quote does not satisfy it. The estimate is due within one business day when care is booked at least three business days out, or within three business days when booked further ahead or whenever the person asks for one.
It matters because of what follows. If the final bill from a provider comes in $400 or more above that provider’s estimate, the person can challenge the excess through a federal dispute process, decided by an independent reviewer, and the provider cannot pursue collection on the disputed amount while it is pending. The threshold applies per provider rather than to the total. Very few families know this exists, and telling someone to get their estimate in writing before admission is one of the most practically protective things you can say.
Then, arrange how it is paid
Payment plans directly with the provider
Most facilities and hospitals will spread a balance over months, frequently without interest, because they would rather be paid slowly than not at all. Ask before admission rather than after the bill arrives, agree the monthly figure and the term, and get it in writing. A provider payment plan is almost always cheaper than borrowing to pay the same bill.
Financial assistance and charity care
Nonprofit hospitals are required to maintain written financial assistance policies, and many other providers operate them voluntarily. These can reduce or clear a bill entirely for people under certain income thresholds. They are rarely advertised and usually have to be requested, sometimes after treatment has already happened.
Health savings and flexible spending accounts
Where someone has an HSA or FSA through work, addiction treatment is generally a qualified medical expense, so those funds can go toward deductibles, coinsurance and self-pay costs using pre-tax money. People often forget the balance is there.
Employee assistance programs
Many employers run an EAP offering free confidential assessment and a limited number of sessions, separate from the health plan and usually with no cost-sharing. Some will help fund or arrange treatment. Worth asking about, and worth reassuring people that using an EAP does not tell their employer what they discussed.
Review the itemized bill
Ask for an itemized bill rather than a summary, and check it against the explanation of benefits. Duplicate charges and coding errors are common, and a corrected claim resolves more balances than a negotiation does. Where the amount is genuinely owed, providers will often still settle for less on a prompt single payment.
Be careful about financing
Treatment loans and medical credit products are widely marketed to families in crisis, sometimes with deferred interest terms that become expensive if the balance is not cleared in time. It is not your role to advise on borrowing. It is entirely appropriate to encourage someone to read the terms carefully and to exhaust lower-cost options first.
Knowledge check: what is the highest-value first check for an uninsured caller?
- Whether they are eligible for Medicaid
- Whether they can obtain a treatment loan
- Whether a facility will waive its fees entirely
- Whether their employer offers insurance next year
Answer: Medicaid eligibility. People often assume they do not qualify when they do, especially after a change in income, and it costs nothing to check.
Knowledge check: a self-pay caller is billed $900 above their written good faith estimate. What can they do?
- Nothing, an estimate is not binding
- File a parity complaint with the Department of Labor
- Challenge the excess through the federal patient-provider dispute process
- Ask their insurer to cover the difference
Answer: challenge it federally. A bill $400 or more above a provider’s good faith estimate can go to independent review, and collections must pause while it is pending.
Review
Six questions spanning everything above. The first four check the main text. The last two are marked as refresher questions and cover the recent changes.
1. A plan pays 20 per cent coinsurance after a $2,000 deductible, with a $7,000 out-of-pocket maximum. Roughly what is the most a person can owe for covered in-network care this plan year?
- $2,000
- $9,000
- $7,000
- There is no limit
Answer: $7,000. The out-of-pocket maximum is the ceiling and the deductible counts toward it, rather than sitting on top.
2. A plan has no in-network provider able to deliver the care a member needs. What is worth asking about?
- A hardship waiver
- A single case agreement
- A No Surprises Act claim
- An essential health benefits exemption
Answer: a single case agreement. A one-off contract letting an out-of-network provider be paid on close to in-network terms, usually requested by the provider.
3. What are most major payers assessing against when they judge medical necessity for addiction treatment?
- The facility’s accreditation status
- The state licensing standard
- The person’s payment history
- The ASAM Criteria
Answer: the ASAM Criteria. This is why documentation mapped to the six dimensions is what secures authorizations and wins appeals.
4. A caller says their state requires coverage of residential treatment, but their employer plan is self-funded. What follows?
- The state mandate does not apply to their plan
- The state mandate applies with a longer deadline
- The plan must cover it but may charge more
- The mandate applies only if they appeal
Answer: it does not apply. Self-funded plans are governed by federal law under ERISA, so state insurance mandates do not reach them.
5. Refresher question: which benefit did Medicare gain on 1 January 2024?
- Residential addiction treatment
- Partial hospitalization
- Intensive outpatient services
- Recovery residences
Answer: intensive outpatient services. Payable only in specified settings, and residential treatment remains uncovered.
6. Refresher question: what is the current position on the 2024 federal parity rule?
- It was struck down and parity law no longer applies
- Its new portions are not being enforced, while the statute remains in force
- It is being enforced in full as written
- It now applies to Medicare for the first time
Answer: new portions not enforced, statute still in force. Revised rulemaking is expected, so check the current position before relying on it.
Job aid: the verification of benefits call
What to establish when you call a plan on someone’s behalf, in a sensible order. Get a reference number for the call and the name of the person you spoke to, every time.
A verification of benefits is an estimate, not a guarantee of payment. Say so to families in those words, because plans do too, and a quote given without that caveat becomes a promise you cannot keep.
Glossary
Select a term to reveal the definition.
Balance billing
When an out-of-network provider bills the patient for the difference between their charge and what the plan paid. Restricted in specific situations by the No Surprises Act.
Carve-out
Where behavioral health benefits are administered by a different company from the medical benefits. Common, and it means a different phone number and different criteria.
Coinsurance
A percentage of the cost of care paid by the person after the deductible is met.
Concurrent review
Reassessment during an admission to decide whether to authorize further days at the current level of care.
Deductible
The amount a person pays before the plan begins paying its share. Resets each plan year.
EOB
Explanation of benefits. The statement showing what was billed, what the plan paid, and what the person may owe. It is not a bill, though it is frequently mistaken for one.
ERISA
The federal law governing employer-sponsored benefit plans, including self-funded plans. Determines which regulator handles complaints and appeals.
Essential health benefits
Ten categories of care that individual and small group plans must cover under the Affordable Care Act. Mental health and substance use disorder services are one of them.
Medical necessity
The standard a plan applies to decide whether it will pay for a given service at a given level of care. For addiction treatment, usually assessed against the ASAM Criteria.
MHPAEA
The Mental Health Parity and Addiction Equity Act. Requires that mental health and substance use benefits are not more restricted than medical and surgical benefits, where they are covered.
NQTL
Non-quantitative treatment limitation. A restriction that is not a number, such as a prior authorization requirement or a medical necessity standard. Where most parity disputes arise.
Out-of-pocket maximum
The most a person pays for covered in-network care in a plan year, after which the plan pays in full.
Prior authorization
Approval obtained from the plan before care begins. Care delivered without it, where required, is often not paid.
Self-funded plan
An employer plan where the employer pays claims from its own funds and an insurer only administers it. Governed by federal law rather than state insurance regulation.
Single case agreement
A one-off contract between a plan and an out-of-network provider for a specific patient, usually where no in-network provider can meet the need.
Good faith estimate
A written, itemized estimate of expected charges that providers must give uninsured or self-pay patients before scheduled non-emergency care. A bill $400 or more above it can be disputed through a federal process.
Charity care
A provider policy reducing or clearing bills for people below certain income thresholds. Nonprofit hospitals are required to have written financial assistance policies.
EAP
Employee assistance program. An employer-funded service offering confidential assessment and short-term support, separate from the health plan and usually free to the employee.
HSA and FSA
Health savings and flexible spending accounts. Pre-tax funds that can generally be used for addiction treatment as a qualified medical expense.
Sliding scale
A fee structure setting the cost of care against the person’s income. Standard practice in community-based services.
Verification of benefits
The process of contacting a plan to establish what it will pay. Produces an estimate, not a guarantee of payment.
References and further reading
U.S. Department of Labor, Employee Benefits Security Administration. Fact Sheet: Final Rules under the Mental Health Parity and Addiction Equity Act. September 2024.
U.S. Departments of Labor, Health and Human Services, and the Treasury. Statement regarding enforcement of the final rule on requirements related to MHPAEA. May 2025.
Centers for Medicare & Medicaid Services. Intensive Outpatient Program Services. Medicare coverage guidance, effective January 2024.
Centers for Medicare & Medicaid Services. CY 2024 Hospital Outpatient Prospective Payment System Final Rule. November 2023.
Centers for Medicare & Medicaid Services. Understanding the Good Faith Estimate and Patient-Provider Dispute Resolution Process. No Surprises Act guidance.
American Society of Addiction Medicine. The ASAM Criteria, Fourth Edition, Volume 1: Adults. 2023.
Substance Abuse and Mental Health Services Administration. Substance Abuse Prevention and Treatment Block Grant. Program guidance.
SAMHSA National Helpline: 1-800-662-HELP (4357), free, confidential, 24 hours a day. 988 Suicide and Crisis Lifeline: call or text 988.
This guide is educational and describes general features of the United States health coverage system for people working in and around behavioral health services. It is not legal, financial, or insurance advice, and it cannot tell you what any particular plan covers. Insurance rules change, coverage varies by plan and by state, and the regulatory position described here was accurate at the time of writing. Always verify benefits directly with the plan and consult the plan documents.
