How Superbills Work: Getting Reimbursed for Out-of-Network Therapy

You've finally decided to start therapy, and then a new worry lands. The practice is out of network, and someone mentioned you'll get something called a superbill that you're supposed to submit to insurance. So now, on top of everything else you're carrying, you're trying to decode a document you've never seen for a reimbursement process nobody explained. The system is genuinely opaque, and it's built to assume you already know how it works. This has nothing to do with you being bad with paperwork.

Bloom is an out-of-network practice, so I walk clients through this constantly. Let me give you the real mechanics. By the end, you'll know what a superbill actually contains, the exact steps to submit one, the questions to ask your insurer before you spend a dollar, and the honest caveats that decide whether you get back a lot, a little, or nothing.

What a Superbill Actually Is

A superbill is an itemized receipt. It isn't a bill you owe, and it isn't the practice billing insurance for you. When a therapist is out of network, you pay them directly, and the superbill is the document that translates your payment into the specific codes your insurance company needs to reimburse you for out-of-network care.

This is the part that trips people up. When you see an in-network provider, the office sends a claim to insurance and insurance pays the office. When you see an out-of-network provider, you pay the provider, and then you file the claim yourself using the superbill. The money, if it comes, comes back to you rather than to the practice. At my practice, superbills go out monthly, so you submit one document covering all of that month's visits instead of chasing paperwork after every appointment.

What's On a Superbill

A superbill has to carry enough information for your insurer to process the claim, so it'll include specifics that look clinical and unfamiliar. Here's what each piece is, and why it's there.

• CPT codes (the service codes). These say what kind of appointment you had. For individual therapy you'll usually see 90834 (about a 45-minute session) or 90837 (about 55 minutes); an initial evaluation is often 90791. You'll need these exact numbers when you call your insurer, so they're worth knowing.
• A diagnosis code. Insurance only reimburses care it considers "medically necessary," so your superbill has to list a diagnosis as an ICD-10 code. That's a real trade-off of using insurance at all: a mental health diagnosis goes on file with your insurer. Worth understanding before you submit.
• Provider identifiers. Your therapist's NPI, license, and the practice's tax ID, which prove the care came from a credentialed clinician.
• The service details. The dates you were seen, the fee for each session, and confirmation that you paid.

You don't need to memorize any of this. You just need to recognize it so the document isn't intimidating when it lands, and so you can check that the dates and amounts match what you actually paid.

The Phone Call to Make Before You Spend Anything

This is the single most useful thing you can do, and almost nobody does it first. Before you commit to out-of-network care, call the member number on the back of your insurance card and ask about your out-of-network outpatient mental health benefits. You're just gathering four numbers.

Here's a script you can read almost word for word:

• "Do I have out-of-network outpatient mental health benefits on my plan?" If the answer's no, you can stop right here, and that alone just saved you months of false hope.
• "What's my out-of-network deductible, and how much of it have I met this year?" Reimbursement usually doesn't start until this deductible is met, and it's separate from your in-network one.
• "Once it's met, what percentage do you reimburse for CPT codes 90834 and 90837?" That's your reimbursement rate, often 50% to 80% on PPO plans.
• "Is that percentage based on what I actually pay, or on an allowed amount? And if there's an allowed amount, what is it for those codes?" This is the question that separates a realistic expectation from a disappointing one. I'll explain why below.

Write down the date, the time, and the name of the rep you spoke with. Insurance answers aren't always consistent between calls, and having a record helps if you ever need to push back on a denial.

The "Allowed Amount" Catch Nobody Warns You About

This is the part that causes the most disappointment. When your plan says it reimburses, say, 70% for out-of-network therapy, that 70% is very often applied to what your insurer decides the service "should" cost, which may be less than what you paid. That figure is the allowed amount, sometimes called the usual and customary rate.

An example makes it concrete. Say you pay $200 for a session and your plan reimburses 70%. You'd reasonably expect about $140 back. But if your insurer's allowed amount for that code is only $150, they pay 70% of $150, not 70% of $200, so you get back about $105. That's still meaningful over months of care, but less than the headline percentage suggested. This is simply how the math is built. Knowing it in advance means the reimbursement check won't be a letdown.

So appreciate your out-of-network benefits, and base your expectations on the allowed amount instead of the sticker price.

How to Actually Submit the Superbill

Once you've got your superbill in hand, submitting it is more straightforward than the codes make it look. Almost every insurer gives you more than one way to do it.

• Through the member app or website. Usually the fastest. Most major insurers have a "submit a claim" section where you upload a photo or PDF and sometimes fill in a short form.
• By mail. Complete the insurer's out-of-network claim form, attach the superbill, and mail it to the claims address on your card.
• Through a reimbursement service. Some third-party services file out-of-network claims for you for a fee. It's optional, and only worth it if the process really overwhelms you.

Submit on a regular rhythm so it doesn't pile up. Since Bloom issues superbills monthly, the simplest habit is to submit each one the day it arrives. Keep a copy of everything you send.

Realistic Timelines

Reimbursement takes time, so budget around the full fee. Most out-of-network claims are processed within a few weeks to a month or two after you submit. Your first claim of the year is usually the slowest, partly because your deductible may still be getting met, and partly because that first submission tends to surface small errors to fix. After that, later claims move faster. To save yourself stress, think of it this way. You pay the full fee at the time of service, and reimbursement is a delayed partial refund.

Common Reasons Claims Get Denied, and What to Do

A denied claim can feel final, but most out-of-network denials come from a handful of fixable causes.

• Deductible not yet met. The most common one, and not really a denial at all. Your payment got applied toward your out-of-network deductible. Once you cross it, reimbursement begins. Nothing to fix; keep submitting.
• Missing or incorrect information. A missing NPI, a mismatched date, a blank field. Compare the denial letter against your superbill, fix the piece that's off, and resubmit.
• Wrong or missing claim form. Some plans reject a superbill sent without their specific claim form attached. Add it and send again.
• Plan has no out-of-network benefits. This is the real no, and it's exactly why the phone call up front matters. If this is the answer, resubmitting won't help. It's time to weigh in-network care, a sliding-scale option, or free resources.

If a denial looks wrong, call the member line, ask the rep to explain the specific reason code, and ask exactly what would need to change. You're allowed to appeal, and a plainly stated correction often resolves it without a fight.

Using HSA and FSA Funds

There's one more lever worth knowing about, whether or not you have out-of-network benefits. Therapy is a qualified medical expense, so you can generally pay for it with a Health Savings Account (HSA) or Flexible Spending Account (FSA). If you have one, you can often use the card directly for sessions, paying with pre-tax dollars, which lowers the real cost. Save your superbills and receipts in case your account administrator asks you to substantiate the expense. HSA and FSA use is separate from insurance reimbursement, so in some cases you can pay with pre-tax funds and still submit for out-of-network reimbursement. Just don't get reimbursed twice for the same dollar.

The Honest Bottom Line

A superbill is just an itemized receipt with the right codes on it, and submitting one becomes a manageable habit once you know the steps. The variable that decides everything is your specific plan. Many PPO plans reimburse a meaningful portion of out-of-network therapy, often 50% to 80% of an allowed amount after your deductible, while many HMO and EPO plans reimburse nothing out of network at all. That comes down to the plan you happen to have. The one call to your insurer, before you spend anything, is what turns this from a guess into a decision you can actually make.