Insurance Allowed Amount and Why It Matters to Your Practice

A tricky part of medical billing is the insurance allowed amount, because each payer and even payer plans have different allowed amounts. And those amounts rarely match your actual billed amount. Billers can end up tracking allowed amounts for 10 to 20 different reimbursement schedules against billed charges and the resulting actual collection rates and/or underpayments.

The risk of not tracking allowed amounts is not seeing underpayments and missing out on collecting critical revenue. 

This article covers health insurance allowed amounts, what they are, how to track them, and why they matter to your practice.

What Is an Insurance Allowed Amount?

Provider insurance allowables — or  allowed amounts — are the maximum amount a healthcare provider is paid for a specific CPT code when they’ve contracted to be an in-network provider with an insurance plan, regardless of the actual billed charge. Broken down, it looks like this:

• Your billed charge is your standard fee, and typically higher than what you collect.
• The insurance allowed amount is the contracted rate or negotiated amount applied by the payer to a CPT or HCPCS code and sometimes modifiers, location, or provider type.

For example, if your practice charges $200 for an office visit and the payer’s allowed amount is $120. Your reimbursement is based on that $120 allowed amount — not your $200 billed charge.

Note: You may also hear allowable charge. It’s the same concept as an  allowed amount, but from a different angle. Allowed amount is the price an insurance company agrees to pay for a medical service or the amount eligible for consideration. The allowable charge is the portion of the provider’s bill the insurance company recognizes as eligible for payment or the final amount approved for reimbursement.  So if you bill $200 the allowed amount may be $120, which is also the allowable charge.

Other factors come into play for insurance allowed amounts.

Patient responsibility is what the patient may pay toward the allowed amount depending on their plan. It can include:

• Deductible if applicable
• Copay, a fixed amount, if applicable 
• Coinsurance, typically a percentage of the allowable, if applicable

The simplest example is if the patient has satisfied their deductible for the year, and has a $15 copay and no coinsurance, the payer pays you $105 and the patient pays you $15. The $105 insurance payment is what the payer pays minus the patient responsibility. Your full reimbursement is still the contracted $120.

The $80 difference between your $200 billed charge and the $120 insurance payment is the contractual adjustment. You write off that $80 difference between your charge and the allowed amount. You can’t bill the patient for the $80 when you’re an in-network provider with their insurance company. 

• Billed charge: $200
• Allowable amount: $120
• Patient copay: $15
• Insurance pays: $105
• Your write off: $80
• Your total payment: $120

Note that different payers and even different plans under one payer can have different allowables. 

What Happens for Out-of-Network Charges

If you see a patient with insurance where you’re not an in-network provider, you can bill them up to your full billed charge — known as balance billing. Exactly how much is typically based on the plan’s usual, customary, and reasonable (UCR) rate, which is similar to the allowed amount, but not contractual. UCR is instead based instead on a benchmark that’s often a percentile calculated from:

• What a provider typically charges for a service — usual 
• What providers in the same geographic area charge — customary
• What the insurer considers appropriate based on usual and customary charges — reasonable

UCR rate can result in lower or less predictable reimbursements compared to contracted allowed amounts.

Reimbursement for an out-of-network visit may look like this:

• Billed charge: $200
• Plan allowed amount using UCR: $110
• Patient cost share is calculated on the $110 under plan rules. The remaining $90 can be balance billed to the patient if not limited by law or the patient’s plan. 

Federal and state laws sometimes restrict balance billing for emergency services and certain services provided at in-network facilities. 

How to Track Insurance Allowed Amounts in Your Practice

Allowables don’t come from a single source — you have to piece them together from a few key pieces of data. Tracking allowables is typically done by the practice’s manager or administrator. 

Key sources to find allowed amounts are:

• Commercial insurance plan contracts, which usually base allowed amounts on a percentage of Medicare or a fixed fee schedule. Tip: Keep a copy of your contract for each payer along with the allowable schedule by CPT code on hand. The schedule  should be part of or an addendum to the contract 
• Payer portals where you can look up allowed amounts for CPT codes by plan
• Downloadable payer fee schedules
• Commercial payer customer service lines
• Medicare Physician Fee Schedule (PFS) look-up tool — a good reference because many commercial contracts are loosely based on a percentage of Medicare. But few practices manually calculate these percentages or keep them in their billing system.
• State Medicaid Provider Fee Schedules 

Note: ambulatory surgical centers (ASCs) and other ambulatory settings, you may have multiple schedules, such as professional (the provider) vs facility (the clinic).

How to Make Tracking Make Sense

You don’t need to manually calculate allowed amounts for every claim or CPT code or build and maintain a detailed allowed amount table. Instead, focus on trends to spot problem areas and prioritizing high-impact issues so you can protect the practice’s revenue. Consider doing a spot check or quarterly or  twice annually audit and focus on the top 5 to 10 CPT codes based on volume and that have the highest reimbursements. 

What matters is having visibility into what you should be paid — whether that comes from your billing system, reporting tools, or your revenue cycle management (RCM) partner.  Medicare is often used as a general benchmark to gutcheck payments, while a deeper reimbursement analysis is done with reporting tools or RCM support.

Many systems and vendors can surface or estimate allowables by:

• Pulling historical payment data automatically
• Flagging expected vs actual reimbursement
• Integrating payer fee schedules (less common)

Because contracts can be vague or outdated, you can also pull from the electronic remittance advice (ERA) and/or explanation of benefits (EOB). You can do that by automatically posting ERAs/EOBs into your billing or practice management (PM) software, which with Azalea is part of the ambulatory EHR and available separately. 

Your PM system stores payment and adjustment data and should let you run reports to identify patterns or outliers and patient responsibility.

Some clearinghouses also offer access to this information. 

Why Insurance Allowed Amounts Matters to Your Practice

Revenue and revenue predictability matter for any business. And understanding and tracking insurance allowed amounts is key to predictable revenue for a healthcare practice. 

Because actual revenue is largely based on allowables, not billed charges, clinics that focus only on fee schedules can easily overestimate their income. And if you don’t know your allowables, you can’t tell when a payer underpays you or processes a claim incorrectly.

Insurance Allowed Amounts Let You Project and Improve Your Collection Rate

Once you have a baseline for what you should collect — not what you happen to collect. You need both your allowed amounts and what you actually collected to know your practice’s projected vs actual collection rate, and can work to improve or maintain it.

You can also:

• Estimate — and set expectations for — the patient’s responsibility before the encounter takes place to help reduce disputes later and increase on-time patient payments
• Flag underpayments (see the next section)
• Find where patient responsibilities aren’t being collected or where there are gaps in your front-desk or follow-up processes.
• Spot workflow problems with coding, eligibility or posting and fix them
• Identify your most profitable services as well as those that underperform
• Monitor payer performance so can reconsider or renegotiate future contracts

Insurance allowed amounts essentially turn your collection rate from a guess into a measurable performance metric you can use to improve revenue predictability. 

Select tools, like those from Azalea Partner Sliced Health, are built around payer contract variance analysis and automatically monitor payment accuracy, contract performance, and underpayments and denial trends. So you stay fully informed of both the impact and next steps.  

How to Use Insurance Allowed Amount to Find Underpayments

An underpayment happens when a payer reimburses you less than your contracted rate. 

You can find underpayments by comparing two numbers:

• Allowed amount — what your contract says you should be paid for a CPT code
• Actual payment — what the payer actually reimbursed you

If the numbers don’t match, you’ve been underpaid.

Here’s a simple example:

• CPT code billed: 99213
• Your allowed amount: $100
• Payment received from payer: $72
• Payment received from patient: $0

At first glance, a payment might seem fine. But once you know the allowed amount is $100, the $72 payment shows a $28 gap. That may mean the payer underpaid you, or it may mean the remaining $28 is patient responsibility that still needs to be billed or collected. 

Without tracking your payment against the allowed amount, the $72 payment may go unchallenged — and those missed dollars add up over time.

You can automate finding underpayments with a tool like Sliced Health’s Payer Contract Variance platform. It flags reimbursement mismatches for you, so you know exactly which claims to follow up on 

Bottom Line on Insurance Allowed Amounts

Understanding insurance allowed amounts gives your practice a clear view of what you should be paid — and where revenue may be slipping through the cracks. You don’t need perfect data or complex tracking to get started. Focus on building visibility, using the tools and support available to you, and identifying trends that impact your bottom line. Even a basic understanding of your allowables can help you catch underpayments, improve your collection rate, and create more predictable revenue for your practice. 

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