Accounts Payable vs. Accounts Receivable in Healthcare Billing: A Guide for ABA Practices

Every ABA practice owner eventually lands on two numbers that tell the real story of their financial health: what the practice owes, and what it's owed. Knowing the difference between accounts receivable vs. accounts payable helps keep the practice financially stable. Get both right, and cash flow stays predictable. Let either slip, and the gaps start showing up at the worst moments, like payroll week.

Inside an ABA practice, both directly affect billing, payments, and day-to-day operations. Strong AR management also plays a key role in driving revenue and reducing payment delays.

What is Accounts Payable? 

Accounts payable (AP) is the money your ABA practice still owes for services, tools, or operational expenses that have already been used but not yet paid. In simple terms, the payable meaning refers to an amount your practice is responsible for paying to a vendor or service provider.

In day-to-day ABA operations, accounts payable can include software subscriptions, office rent, utility bills, outsourced billing fees, therapy materials, or payments owed to service vendors. Once your practice receives the service or invoice, the amount becomes payable until payment is completed.

In accounting, AP is recorded as a short-term liability on the balance sheet because it represents money leaving the practice in the near future.

For example, if your ABA billing software provider sends a monthly invoice due in 30 days, that amount stays under accounts payable until the payment is made. Once paid, the entry is cleared. Managing accounts payable properly helps keep operations running smoothly, maintain vendor relationships, and avoid unnecessary cash flow pressure.

What Is AR in Medical Billing?

Accounts receivable (AR) is the money owed to your practice for services you've already delivered. In AR in medical billing, every time a claim is submitted to an insurance payer, the expected reimbursement becomes part of your AR balance. It's a current asset on your balance sheet, meaning it represents value the practice expects to collect within the near term. In ABA therapy billing, AR includes:

• Claims submitted to Medicaid, commercial insurers, or other payers are awaiting adjudication

• Co-pay and coinsurance balances owed by families after insurance processes a claim

• Denied claims that are currently in the appeals process

• Billed sessions pending authorization confirmation

A concrete example: a BCBA delivers a 97153 session on a Tuesday. The notes are signed, the claim is submitted on Thursday, and the insurance payer has 30 days to process and pay. That expected payment sits in AR until the check (or EFT) clears. If the claim gets denied, it stays in AR as a problem balance until it's appealed, corrected, and resubmitted.

What Do AP and AR Have in Common in Healthcare Billing?

AP and AR are different, but they are connected.

Both affect cash flow. Both appear in your financial records. Both need tracking, reporting, and accountability. Both can make a practice look stable or unstable, depending on how well they are managed.

In healthcare billing, accounts payable and accounts receivable workflows also depend on timing. Your practice may earn revenue today, but receive payment weeks later. Meanwhile, bills and payroll keep moving.

That is why an ABA practice should review AP and AR together, not separately. If your AR report looks strong, but most claims are sitting over 90 days, that is not healthy revenue. For practices with aging claims, the goal is to reduce AR days and improve cash flow before delayed payments impact operations.

GAAP Basics for Small Healthcare Practices

GAAP (Generally Accepted Accounting Principles) helps healthcare practices maintain accurate and consistent financial records. Most practices use either cash basis or accrual accounting. Cash basis records revenue and expenses when money moves, while accrual accounting records revenue when earned and expenses when incurred.

This gives practices a clearer view of accounts receivable and accounts payable by tracking revenue and expenses before payments are received or made.

For example, if an ABA practice provides services in March but receives payment in April, accrual accounting still records the revenue in March. For smaller practices, the goal is to keep GAAP simple by separating earned revenue from collected cash and incurred expenses from paid expenses.

Difference between accounts payable and accounts receivable with an example

Let’s make it practical.

An ABA clinic provides 97153 direct therapy sessions for several clients during the week. The clinic submits claims to insurance and expects payment. That expected payment becomes accounts receivable.

Clinics still need to pay RBT wages, BCBA costs, rent, software, and vendors. If claims are delayed, cash flow gets tight fast. That is why accounts receivable vs payable matters in ABA billing services.

For example, when documentation, modifiers, authorization details, or payer rules are incorrect, 97153 billing denials can quickly turn expected reimbursement into aging AR.

Accounts Payable vs Accounts Receivable: ABA Practice Comparison

Why AR Management Is Critical in ABA Billing 

AR management becomes a bigger challenge in ABA billing because there are more moving parts behind every claim. 

Denials increase AR balances

When a payer denies a claim because of a wrong modifier, missing authorization, or billing error, the payment gets delayed and stays in AR until someone fixes it. If follow-up takes too long, the balance can age out and become harder to collect.

Authorization gaps create billing problems

ABA services usually depend on active prior authorizations. Even one session billed after the authorization expires can trigger a denial. That balance then moves into AR and needs correction or appeal before payment can happen.

Documentation delays slow everything down

Claims cannot move forward if session notes are incomplete or unsigned. Late documentation delays claim submission, increases AR days, and can even lead to timely filing denials.

Payer rules are different everywhere

One payer may require different modifiers or billing rules than another. Small coding mistakes can cause rejections, which push the claim back into AR for rework.

See how structured billing workflows can cut ABA denials and AR days through cleaner claims, faster follow-up, and denial prevention.

How Clean Claim Rate Affects Your AR

Every rejected claim creates extra work. One wrong modifier or a missing prior auth can send the claim back into the AR cycle again.

Cube Therapy Billing maintains a 98.9% clean claim rate, helping clients average only 18 days in AR.

Struggling with aging AR or climbing denial rates? Book a free billing audit and find out exactly where your revenue cycle is leaking.

FAQ

1. Is accounts payable an asset or a liability?

Accounts payable is a liability because it represents money a clinic or business still owes for expenses like rent, payroll, software, or vendor services already received. 

2. What is the difference between accounts receivable and accounts payable in healthcare? 

Accounts receivable are the money a healthcare practice should receive from insurance companies or patients. Accounts payable is the money the practice still needs to pay for expenses and daily operations. 

3. How does AR work in medical billing?

In medical billing, AR starts after claim submission. If payment is delayed, denied, or underpaid, the billing team follows up until the balance is resolved. 

4. What is the 10 rule for accounts receivable? 

The 10 rule in accounts receivable means practices should regularly review unpaid claims older than 10 days to prevent delays, denials, and long payment cycles.