Your billing system says a claim paid in full. Your bank account says otherwise. Somewhere between the payer sending the money and the dollars landing in your account, a gap opened up — and no one noticed, because no one compared the two. That comparison is payment reconciliation in medical billing: the quiet discipline that proves your cash is really there.
Posting tells you what the payer said they paid. Reconciliation tells you what actually arrived. Most practices do the first and skip the second, which is why money goes missing without a single denial ever appearing.
Posting is not reconciliation
Payment posting records the payer’s remittance advice — the ERA or paper EOB — into your billing system: allowed amount, patient responsibility, adjustments, and the payment itself. That is a record of the payer’s decision. Reconciliation is the separate step of matching those posted payments against the money that actually hit your bank account through EFT deposits, paper checks, and patient payments.
A posted payment does not guarantee a deposited dollar. An ERA can be received while the matching EFT is delayed, split across deposits, or never initiated. A takeback can pull money out of a deposit that your system already recorded as paid. If you only post, your books can look perfectly balanced while the bank balance quietly drifts away from what the billing system claims.
What payment reconciliation actually checks
At its core, reconciliation is a three-way match. For every payment your system says it received, there should be a corresponding deposit in the bank, and for every deposit in the bank, there should be a posted payment in the system. When all three line up — remittance, posting, and deposit — the cash is proven.
A practical reconciliation answers four questions each month: does every ERA and EOB have a matching bank deposit? Does every deposit have matching posted payments? Do the amounts match, line by line? Is any money sitting unapplied — posted nowhere, or to the wrong account?
Any “no” is a lead. Most turn out to be timing or batching issues. Some turn out to be missing money.
The monthly reconciliation routine
Reconciliation works best as a fixed monthly routine, run the same way every time, by someone other than the person who posts the payments. The person checking the math should not be the person who did it.
1. Pull the month’s payment record from the billing system
Export every payment posted during the month, grouped by payer and by remittance batch: ERA payments, paper-check payments posted from EOBs, and patient payments. Note the total expected deposit amounts and the remittance trace numbers that identify each EFT batch.
2. Pull the month’s deposits from the bank
List every healthcare-related deposit: EFT credits from payers, deposited paper checks, lockbox deposits, and patient payments from portals or front-desk collection. Keep non-revenue deposits (loans, transfers) out of this list — they only create noise.
3. Match each posted batch to a deposit
Work batch by batch. For each ERA with an EFT trace number, find the matching bank credit for the same amount. For paper checks, match the check number and amount on the EOB to the deposited check. Mark each pair as matched; anything without a pair goes on the exception list.
4. Investigate every exception
Unmatched items fall into a small set of causes: timing (the EFT arrives a day or two after the ERA), split deposits (one ERA paid across two EFT batches), bank batching (the bank combined several EFTs into one credit), posting mistakes, takebacks, or money that genuinely never arrived. Resolve the easy ones first — timing and batching explain most of the list — and push the remainder into a follow-up queue with owners and dates.
5. Clear unapplied cash
Money that arrived in the bank but was never posted to a patient account is unapplied cash. It inflates the bank balance without reducing any patient’s balance, so receivables look worse than they are and statements can bill patients for amounts already paid. Apply every unapplied dollar to the right account before you close the month.
6. Sign off and file the reconciliation
Document the matched totals, the exception list, and how each exception was resolved. A one-page summary — expected deposits, actual deposits, variance explained — gives the practice owner a monthly proof that the cash is real. File it where it can be found later: auditors, buyers, and lenders all ask for it eventually.
What reconciliation catches that posting never will
Reconciliation is where quiet losses surface. The most common finds:
- ERAs posted but never deposited. The remittance arrived and was posted; the EFT never followed. Without a bank match, the system shows revenue the practice never received.
- Deposits posted but never received. A paper check recorded in the system but lost in transit, or an EFT returned for a closed or wrong account.
- Takebacks netted inside deposits. A payer recoups an alleged overpayment by offsetting it against a current payment, so the deposit arrives short. Reconciliation is how the shortfall gets tied back to the original claim.
- Posting errors. Misapplied payments and short payments recorded as contractual adjustments only become visible when the deposit does not match the postings — see our companion guide on payment posting errors that hide underpayments.
- Patient payments that bypassed posting. Front-desk cash, portal payments, and payment-plan installments sometimes reach the bank without ever being posted, inflating the bank balance while patient accounts keep aging.
When a shortfall turns out to be a payer paying less than the contract requires, it moves from a reconciliation exception to an underpayment case — which is the point where you recover underpayments through the dispute process rather than through the books.
The deposits that make reconciliation hard
Reconciliation is straightforward when one ERA equals one EFT. Real deposits are messier:
- Split and combined EFTs. Payers sometimes split one remittance across deposits or combine several into one credit. Match on trace numbers and totals, not one-to-one pairs.
- Virtual credit card payments. Some payers pay by virtual card through a merchant account — carrying processing fees that quietly reduce the net deposit. Reconcile the gross payment and the fee separately.
- Paper checks. Checks arrive days after the EOB, deposit in batches, and are the most likely to be recorded but never received — or received but never posted.
- Patient payment channels. Portals, phone payments, front-desk swipes, and mailed checks each settle through different paths. Each channel needs its own daily batch total so the month-end match is possible.
- Multi-account practices. If deposits land in more than one bank account, reconcile each account separately. Combining them first is how mismatches hide.
How often should a practice reconcile?
Monthly is the minimum — it lines up with bank statements and gives you a clean close. Larger practices, or any practice that has found missing money before, do better with a weekly light pass: match the week’s EFT batches to the bank, and save the full exception review for month-end. One more rule: reconcile before you close the month’s books, not after. Reports built on unreconciled numbers are guesses wearing a suit.
Frequently asked questions
What is payment reconciliation in medical billing?
It is the process of matching every payment posted in the billing system — from ERAs, EOBs, and patient payments — against the actual deposits in the practice’s bank accounts, to prove that the money the system says was received truly arrived.
Is reconciliation the same as payment posting?
No. Posting records what the payer’s remittance says was paid. Reconciliation verifies that the posted amounts actually reached the bank. Posting without reconciliation confirms the payer’s paperwork; reconciliation confirms the cash.
What is unapplied cash, and why does reconciliation focus on it?
Unapplied cash is money received — usually in the bank — that was never posted to a patient account. It makes the bank balance look healthy while receivables and patient balances stay wrong, so statements can bill patients for amounts already paid. Reconciliation forces every dollar to a home.
Who should do the reconciliation?
Someone other than the person who posts the payments. The checker should not be the doer — that separation is what makes the routine a control rather than a formality. Small practices often have the office manager or an outside billing partner run it.
What should I do when a deposit does not match the remittance?
First rule out timing and batching: EFTs often arrive a day or two after the ERA, and banks combine deposits. If the gap persists, trace the remittance batch to the EFT trace number with the payer, and document every step.
A proven month is a quieter month
Reconciliation will not make payers pay faster, and it will not fix a broken posting process. What it does is narrower and more valuable: it proves the cash. Every month that closes with the books matched to the bank is a month where missing deposits, silent takebacks, and unapplied cash cannot hide until they become expensive problems.
If the routine keeps turning up exceptions your team cannot clear — or if no one on staff has clean hours to run it — that is usually a sign the back end needs dedicated attention. A payment posting service that posts and reconciles as one discipline removes the gap between the two. And if you want an outside read on where your revenue cycle is leaking before you commit to anything, start with a free billing assessment.
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