> ## Documentation Index
> Fetch the complete documentation index at: https://dso.getlemma.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Patient refunds and credit balances, explained

> Why dental credit balances arise, how to distinguish patient, payer, and posting-error balances, and how refunds and unclaimed property affect operations and diligence.

A **credit balance** is money on an account that the practice may not be entitled to keep. It should be recorded as a **liability** while the practice determines whether it belongs to a patient, payer, or another party. The return process and deadline depend on the source, contract, program, and applicable law.

## Why they arise in dental

| Cause                           | Mechanism                                                                                                                                                    | Frequency         |
| ------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------ | ----------------- |
| Estimate-driven overcollection  | The treatment-plan estimate exceeded final patient responsibility because the plan paid more than expected or an anticipated alternate benefit did not apply | Very common       |
| COB difference                  | A secondary plan paid more than estimated, including some dependent-child claims under coordination-of-benefits rules                                        | Common            |
| Duplicate payment               | Patient and plan both paid the same balance                                                                                                                  | Common            |
| Prepaid treatment not delivered | A large-case or ortho prepayment where treatment ended early                                                                                                 | Occasional, large |
| Retroactive eligibility         | Coverage backdated; the patient shouldn't have paid                                                                                                          | Occasional        |
| Payer overpayment               | Plan paid twice, or paid the wrong amount                                                                                                                    | Occasional        |
| Posting error                   | Human error                                                                                                                                                  | Occasional        |

Estimate-driven overcollection can be reduced by using current eligibility information, the correct fee schedule, and product-specific alternate-benefit rules. When inputs remain uncertain, avoid collecting more than the reasonably supported amount. See [Patient responsibility](/concepts/payments/patient-responsibility). Point-of-care collection inevitably creates some balances that must be adjusted after adjudication.

## Whose money is it?

The determination that governs everything downstream, and the step most often skipped.

```mermaid theme={null}
graph TB
    A[Credit balance] --> B{Source of the excess?}
    B -->|Patient paid too much| C[Patient money<br/>state refund deadlines<br/>escheatment if unclaimed]
    B -->|Payer paid too much| D[Payer money<br/>contract terms<br/>60-day rule for Medicaid/Medicare]
    B -->|Both| E[Split, allocate and<br/>refund each their share]
    B -->|Nobody, posting error| F[Correct the posting<br/>no refund owed]
```

The obligations differ materially:

**Patient money.** Refund it to the patient under the applicable state deadline, board rule, contract, and financial policy. If the owner cannot be located or the payment remains uncashed, state unclaimed-property law may apply.

**Payer money.** Follow the payer contract and program rules. Federal health care program overpayments may be subject to the **60-day report-and-return rule** after identification, and knowing retention can create False Claims Act exposure.<sup>1</sup> Dental groups should pay particular attention to Medicaid, including claims administered by dental benefit administrators, and any Medicare or Medicare Advantage business they bill. See [Report and return overpayments](/guides/compliance/report-and-return-overpayments) and [DSO enforcement and risk](/concepts/model/dso-enforcement-and-risk).

**Posting error.** Correct the ledger rather than issuing a refund that creates a second error.

**Refunding payer money to the patient is a compounding error.** You have failed to return an overpayment to the payer *and* given money to someone not entitled to it. The 60-day clock keeps running. Determine ownership before touching anything.

## The legal character of holding patient money

Worth stating plainly, because practices tend to treat credit balances as a housekeeping nuisance:

**It is not your money.** It sits on your balance sheet as a liability. Holding it is not a neutral act:

* **State refund statutes** impose deadlines in many states
* **Unclaimed property law** eventually transfers it to the state, with due-diligence and reporting obligations attached
* **Dental boards** have disciplined practices for failing to refund
* **Consumer protection statutes** can reach retention of consumer funds
* Financially, an unrefunded credit balance **overstates your cash position** relative to your actual obligations

## The diligence angle

Track each credit balance to the entity and transaction that is legally or contractually responsible for the refund. The billing entity is an important starting point, but payer terms, the payment source, transaction documents, and applicable law may affect the result. That makes credit balances an acquisition item on both sides of every deal:

* **Buying:** aged patient and payer credits may carry refund and unclaimed-property obligations. Request an aged credit-balance report, test a sample, and have counsel address responsibility in the purchase agreement.
* **Selling (eventually, every DSO):** years of unresolved credits across many PCs read in a quality-of-earnings review as a liability and a controls failure. The weekly discipline below is cheap; reconstructing it under diligence pressure is not.

See [Run diligence](/start/first-acquisition/run-diligence).

## The refund method hierarchy

Refund to the original payment method wherever possible. It reconciles cleanly, arrives fast, and cannot get lost in the mail.

| Original payment          | Preferred refund                                | Notes                                                             |
| ------------------------- | ----------------------------------------------- | ----------------------------------------------------------------- |
| Card, pre-settlement      | Void the transaction                            | Cleanest, as if it never happened                                 |
| Card, post-settlement     | Refund to the same card                         | Interchange on the original sale is generally not returned to you |
| Card, expired or reissued | Try the card first                              | Networks often route refunds to a replacement card                |
| Card, account closed      | Mailed check                                    | The refund will reject; verify address first                      |
| ACH                       | ACH credit                                      | Verify account details                                            |
| Cash                      | Mailed check                                    | Confirm the current address                                       |
| Check                     | Mailed check                                    |                                                                   |
| Unreachable patient       | Check to last known address → escheatment track | Start the uncashed-check clock                                    |

## Why mailed checks are the painful case

Some refunds cannot return through the original payment method and must be sent another way, often by check. These cases need a separate control process.

What a check refund actually requires:

1. **Check stock**, physical, secured, per bank account
2. **An authorized signature or approval** under the issuing account's bank documents and the entity's approved disbursement workflow
3. **Printing**, a printer, alignment, MICR handling
4. **Envelopes and postage**
5. **A trip to the post office**
6. **Address verification:** confirm the address before issuing the check
7. **Tracking:** record whether and when the check clears
8. **Stale-dated checks**, reissue requests, stop payments
9. **Escheatment**, for checks never cashed

Then multiply by entity count. Keep refund authority, source-of-funds support, and accounting on the ledger of the entity legally or contractually responsible. A mailed check must follow the issuing bank's drawer, account, and signer rules. If a centralized service or another entity issues or funds a refund, document the agency or intercompany mechanics, confirm they are permitted by state law and the bank or merchant documents, and record the obligation and settlement on the correct entity ledgers. Do not use another entity's account merely for convenience.

Refund work is easy to defer because it is manual and does not generate revenue. At scale, that can leave years of unresolved balances for an audit or transaction team to reconstruct.

See [Issue a patient refund](/guides/payments/issue-a-patient-refund) for the operational recipe.

## When the check is never cashed

Uncashed refund checks do not revert to you. They become **unclaimed property**, and after a state-specified dormancy period you owe the state, not the patient.

The pipeline:

1. **Check goes stale**, commonly 90–180 days per the terms printed on your check stock
2. **Due diligence:** complete the state-required owner-contact steps before reporting
3. **Dormancy period elapses**, varies by state and property type
4. **Report and remit** to the state's unclaimed property administrator

**Keep an uncashed-check ledger from the start.** Record each check number, amount, payee, issue date, and clear date. This avoids reconstructing several years of activity from bank statements during an unclaimed-property review.

See [Handle uncashed checks and escheatment](/guides/compliance/handle-escheatment) and [Unclaimed property by state](/reference/banking/escheatment-by-state).

## The credit balance discipline

**Run the report weekly**, not monthly. Aged credit balances are a compliance problem, and the 60-day clock on payer overpayments runs from identification, which a monthly cadence can burn a third of.

**Resolve within 30 days.** Determine ownership, issue the refund, post it against the balance.

**Never apply a patient credit forward without consent.** Applying it to a future visit converts the patient's money into a prepayment they didn't agree to. Ask, and document the answer.

**Reconcile refunds against open card disputes** before issuing, to avoid the double-refund trap. See [Chargebacks](/concepts/payments/chargebacks).

## Sources

1. 42 U.S.C. § 1320a-7k(d), enacted by ACA § 6402(a). The implementing regulation's identification standard was revised by CMS-4205-F, published December 9, 2024, effective January 1, 2025, replacing "reasonable diligence" with the False Claims Act knowledge standard. See Morgan Lewis, [Tick-Tock: CMS Overpayment Refund Final Rule and Practical Implications](https://www.morganlewis.com/pubs/2024/12/tick-tock-cms-overpayment-refund-final-rule-and-practical-implications); Foley & Lardner, [CMS Issues Final Regulations Implementing Changes to 60-day Refund Rule](https://www.foley.com/insights/publications/2024/11/medicare-overpayments-cms-final-regulations-60-day-refund/).