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Glossary / A–Z

Insurance and billing

Parity, prior auth, single-case agreement, reasonable and customary, and the rest.

Getting your teen help is hard enough without also decoding an insurance company’s vocabulary. This page explains the billing and coverage terms that come up most when you are trying to get mental health care paid for, so you can read your plan, talk to your insurer, and push back when something seems wrong. None of this is legal or financial advice; it is meant to help you ask sharper questions of the people who can actually answer them.

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Terms in this section

These are the insurance and billing terms you are most likely to run into while arranging mental health care. Coverage rules vary widely by plan and state, so treat these as starting definitions and always confirm specifics with your own insurer and your plan documents.

Premium
The amount you pay (often monthly) to keep your insurance coverage, separate from what you pay when you actually use care.
Deductible
The amount you pay out of pocket for covered services before your insurance starts paying its share.
Copay
A fixed amount you pay for a covered service, such as a set fee per therapy session.
Coinsurance
Your share of a covered service’s cost expressed as a percentage, paid after you meet your deductible.
Out-of-pocket maximum
The most you have to pay for covered services in a plan year; once you reach it, the plan covers eligible costs in full.
In-network vs. out-of-network
In-network providers have a contract with your insurer and usually cost you less. Out-of-network providers do not, so you typically pay more — or the full amount — though some plans offer partial out-of-network benefits.
Prior authorization (“prior auth”)
Approval the insurer requires before it will cover certain services. For higher levels of mental health care, getting and renewing prior authorization is often a major part of the process.
Medical necessity
The insurer’s standard for whether a service is appropriate and covered. Denials frequently turn on this, and it is often the basis for an appeal.
Mental health parity
The principle, reflected in federal law (the Mental Health Parity and Addiction Equity Act), that plans should not impose stricter limits on mental health and substance use care than on comparable medical care. If coverage for mental health seems more restrictive, parity may be relevant.
Explanation of benefits (EOB)
A statement from your insurer (not a bill) showing what was billed, what the plan paid, and what you may owe. Reviewing EOBs helps you catch errors.
Claim
The request for payment submitted to your insurer for a service. Claims can be filed by the provider or, for out-of-network care, sometimes by you.
Denial and appeal
A denial is the insurer’s decision not to pay for a service. An appeal is your formal request to have that decision reconsidered; plans are required to have an appeals process, and denials are sometimes overturned.
Single-case agreement (SCA)
An arrangement where an insurer agrees to cover a specific out-of-network provider at in-network terms, often because no suitable in-network option is available.
Superbill
An itemized receipt from an out-of-network provider that you can submit to your insurer to seek reimbursement under your out-of-network benefits.
Usual, customary, and reasonable (UCR)
The amount an insurer considers a standard charge for a service in your area, which can affect how much of an out-of-network bill it will count toward reimbursement.

How to use this glossary

Use these terms to make sense of your plan and your conversations with the insurer, but verify the specifics for your situation — coverage rules differ from plan to plan and state to state. Your plan documents (often the Summary of Benefits and Coverage) and your insurer’s member line are the authorities on what your plan actually covers.

A few habits help: keep written notes of calls with dates and names, save every explanation of benefits and denial letter, and do not treat a denial as final — ask why, request it in writing, and use the appeals process. If a mental health service is covered more restrictively than comparable medical care, parity laws may give you grounds to push back, and your state insurance regulator can be a resource.

Related sections

Coverage decisions often hinge on the level of care, explained in program types, and on the provider’s credentials, covered in clinical roles & credentials. For a deeper walkthrough of working with insurers, see the Hartley insurance guide.


Sources

  1. HealthCare.gov — glossary of insurance terms (healthcare.gov)
  2. U.S. Department of Labor — Mental Health Parity and Addiction Equity Act resources (dol.gov)
  3. Centers for Medicare & Medicaid Services (CMS) — consumer coverage information (cms.gov)
  4. National Alliance on Mental Illness (NAMI) — guidance on navigating insurance for mental health care (nami.org)
  5. [Formal citations will be added at clinical review. See medical review.]