Out-of-Network Rehab: How a Single Case Agreement Works

A single case agreement is a one-patient, one-episode contract in which a health plan agrees to pay an out-of-network treatment provider, usually at a negotiated rate, because the plan cannot show an in-network option that fits the person’s clinical needs. For someone seeking residential care for a substance use disorder, it is a formal request that has to be made on purpose, in writing, and early. It is not automatic, it is not guaranteed, and plans use different names for it, including “network exception,” “gap exception,” and “out-of-network authorization.”

This post explains the process in plain terms so you can ask better questions. It is general education, not legal or insurance advice, and your plan’s own documents control what applies to you.

What a single case agreement actually is

Most health plans pay the most for care delivered by providers they have contracted with. When you go outside that network, the plan may pay less, require you to pay more, or decline the claim. A single case agreement is the plan’s way of making a one-time exception. The facility is not joining the network permanently. The plan is agreeing to cover this person, for this level of care, for an approved block of days.

Two details matter in practice. First, approval is usually tied to a specific level of care, such as residential rather than outpatient, and often to specific dates that the plan reviews again later. Second, the request is generally strongest when it is supported by a clinical assessment that explains why the recommended level of care is needed. Many insurers and facilities describe that assessment using the ASAM Criteria, a widely used framework that matches a person’s needs to a level of care. If you want the background on those levels, our post on the parity law and questions for your rehab insurer covers the legal side, and our insurance verification page shows how to start a benefits check.

Why network gaps happen

People are often surprised to learn that a plan with a long provider directory can still have no usable residential option. These are the usual reasons a request for an exception comes up:

• Directory lag: a listed facility may have stopped accepting that plan, or may not have a bed, even though the directory still shows it.
• Level-of-care mismatch: a plan may list in-network programs that offer outpatient or intensive outpatient care but not the residential setting a clinician recommended.
• Waitlist length: an in-network program may be real but unable to admit the person on a timeline that is safe for their situation.
• Clinical fit: a person with a co-occurring condition such as depression, anxiety, or trauma alongside a substance use disorder may need a program that treats both, and the in-network option may not.
• Geography: the nearest in-network residential program may be far enough away that travel itself becomes a barrier.

Each of these can be documented, and documentation is what turns a hopeful phone call into a request the plan has to answer.

The three documents to gather before you call

You do not need a folder of paperwork to begin, but three items make every later conversation faster. Put them in one place today.

• Insurance card and plan documents: the member ID, the group number, and the benefits booklet or online summary, which describes out-of-network and substance use disorder coverage.
• Clinical recommendation: a written statement from a physician, licensed clinician, or the facility’s assessment team on the level of care recommended and why.
• Directory evidence: dated notes or screenshots of the in-network programs you called, who you spoke to, and whether they had a bed, accepted the plan, or offered the right level of care.

The third item is the one people skip, and it is the one that most often supports the case. A plan asked to approve an exception will typically want to know what in-network options were considered and why they did not work.

Questions to ask your insurer

When you call the member services number on your card, write down the date, the representative’s name, and a call reference number if one is offered. Then ask these questions in order:

1. Does my plan cover residential treatment for substance use disorder, and is it in network or out of network for the facility I am considering?
2. Does the plan have a process for a single case agreement, network exception, or gap exception? What is it called here?
3. Who submits the request, the facility, my clinician, or me? What form or fax number does it go to?
4. What clinical information does the plan need, and what is the expected time for a decision on a standard request and on an urgent one?
5. If the request is denied, will I receive the reason in writing, and how do I appeal?

The last question is the most important one to ask before you need it. Federal law, the Mental Health Parity and Addiction Equity Act of 2008, generally requires plans that cover substance use disorder benefits to apply limits that are comparable to those on medical and surgical benefits, so a written denial reason is something you can use to ask whether those rules were followed. A denial is not always the final word.

Questions to ask the admissions team

A facility’s admissions staff handle these requests regularly and can usually tell you what they need from you. Ask whether they work with your plan and whether they would submit the request. Ask what clinical information they need and whether a pre-admission assessment is required. At a small private residence such as Annandale’s, where capacity is limited to six beds, it is also fair to ask how long a bed can be held while an authorization is pending, because that answer changes your planning. Admissions can be reached at (855) 778-8668.

When timing and safety collide

Paperwork moves slowly, and withdrawal does not wait. This is the point where the insurance process has to give way to medical safety. Alcohol and benzodiazepine withdrawal can cause seizures and other life-threatening complications, and stopping suddenly without medical supervision can be dangerous. If someone is drinking heavily or taking benzodiazepines daily, do not stop on your own to “get ready” for an authorization decision. Medically supervised detox is required for these substances, and a clinician should decide how to proceed. Our page on medical detox in Los Angeles explains what supervised withdrawal involves.

If the person is in withdrawal, having a seizure, confused, or in danger, call 911. If someone is thinking about suicide or in emotional crisis, call or text 988, the Suicide and Crisis Lifeline. Insurance questions can wait. Safety cannot.

If the answer is no

A first denial is common enough that it is worth preparing for. Ask for the denial in writing, with the specific reason and the plan’s appeal deadline. Ask the facility and your clinician whether they can supply additional clinical information. If your plan is regulated by the state, the state’s insurance or managed care regulator may accept complaints about denials, and an employer plan may have a benefits administrator who can help. Our PPO insurance page describes how out-of-network benefits often work on PPO plans, which sometimes pay a portion of out-of-network care without any exception at all.

If coverage ultimately falls through, you still have options. The SAMHSA National Helpline at 1-800-662-4357 is a free, confidential treatment referral service that operates 24 hours a day, 365 days a year, and it can point to programs that fit different budgets and coverage types. The National Institute on Drug Abuse also publishes plain-language guidance on how addiction treatment works, which can help you judge what to look for.

One thing you can do today

Pick up your insurance card, call the member services number, and ask question two from the list above: “What is your process for a single case agreement or network exception for residential substance use treatment?” Write down the answer and the reference number. That single call tells you whether this path exists for you and who owns the next step. If you would like help working through the process with someone who does this every day, you can reach Annandale Behavioral Health at (855) 778-8668 or start with our admissions page.

Educational disclaimer: This article is for general information only and is not medical, legal, or insurance advice. Coverage rules vary by plan and by state, and no outcome is guaranteed. Substance use disorder treatment decisions, including withdrawal management, should be made with a qualified clinician. In an emergency, call 911; for emotional crisis, call or text 988.