PR-3 Denial Code (CARC 3) 2026: Copay Amount, Posting and Refunds

PR-3 is not really a denial. It is the payer telling you that part of the allowed amount is the patient’s fixed copay. You may collect it from the patient. Most PR-3 lines need nothing more than correct posting. The work starts when the copay looks wrong. It may be higher than the plan says. It may land on a visit that should be free. Or the patient may have a second plan that limits what you can collect. (Primary sources: X12 Claim Adjustment Reason Codes · HealthCare.gov, copayment).

In brief: PR-3 means “Co-payment Amount” under the patient responsibility group. Post it to the patient’s account and match it to what the front desk took. Then bill or refund the difference. Look closer when the amount doesn’t match the plan, when the visit was preventive care, or when the patient has QMB or Medicaid as a second plan.

Part of our denial codes library. Written by Manikandan J, CPC, CRCR, who has posted and reconciled patient balances for payers and billing companies. Published 20 October 2026. Last updated: 20 October 2026. Code wording is quoted word for word from X12.

Official X12 wording for CARC 3

Field	Official X12 text
Description	“Co-payment Amount”
Start	01/01/1995

Source: X12 Claim Adjustment Reason Codes, checked 20 October 2026.

Denial code 3, CARC 3 and reason code 3

People search for denial code 3, CARC 3 and reason code 3, and they all mean the same X12 code. The group code in front changes who owes the money. With PR, the patient owes it. If you see the same number under CO, read our CO-3 guide, because a copay under the contractual group usually signals a payer setup error. For a side-by-side view of deductible, coinsurance and copay lines, see PR-1, PR-2 and PR-3.

Copay, coinsurance and deductible in one table

A copay is a fixed dollar amount the patient pays for a covered service, such as $30 for an office visit. Coinsurance is a percentage of the allowed amount, such as 20 percent. A deductible is the amount the patient pays each year before the plan starts sharing costs.

Term	CARC	Calculated as	Typical example
Deductible	1	Dollars until a yearly limit is met	First $1,500 of covered care
Coinsurance	2	Percent of the allowed amount	20 percent of a $400 MRI allowance
Copay	3	Fixed amount per visit or service	$40 specialist visit

Some plans charge a copay and then coinsurance on other lines of the same visit. For example, an urgent care visit may carry a $75 copay on the visit line and 20 percent coinsurance on an X-ray line.

When a PR-3 amount deserves a second look

Red flag	What to check	Likely fix
Copay higher than the ID card	Visit type: specialist vs primary care	Call the payer if the provider type was set up wrong
Copay on an annual wellness or screening visit	In-network preventive service rules	Ask for reprocessing without cost sharing
Two copays on one day	Plan rules on same-day visits	Reprocess if the plan allows one copay per day
Copay on a telehealth visit	Telehealth benefit design	Check the plan’s virtual visit copay
Copay billed to a QMB patient	Medicare cost-sharing protections	Don’t bill the patient; refund if collected

HealthCare.gov explains that most plans must cover a set of preventive services without charging a copay or coinsurance when an in-network provider delivers them. If a screening line carries PR-3, check the diagnosis order and any modifier first. A problem-focused visit billed on the same day can have its own copay.

How to work a PR-3 line

1. Confirm the plan copay from the eligibility response or the member’s benefits, not just the card.
2. Match the visit type. Specialist, primary care, urgent care and emergency room copays often differ.
3. Compare with the front-desk receipt. Note any amount already collected at check-in.
4. Check secondary coverage before you send a statement.
5. Post the PR-3 amount to patient responsibility, never to a contractual write-off.
6. Bill or refund the difference, and keep the remit with the account notes.

Secondary coverage, Medicaid and QMB patients

A secondary plan may pick up the copay. Send the claim with the primary remit attached or as an electronic crossover. Some secondaries refuse it, and you may see N766, “This payer does not cover co-payment assessed by a previous payer.”

Medicaid rules are stricter. A Qualified Medicare Beneficiary is a person in the QMB program. It’s a Medicaid program that pays Medicare premiums and cost sharing. Providers can’t bill QMB patients for Medicare copays or coinsurance. A remit may carry N783, “Alert: Patient is a Medicaid/ Qualified Medicare Beneficiary. Review your records for any wrongfully collected copayment.” CMS explains the rule on its QMB program page.

When the copay must be refunded

Refund the patient when the front desk collected more than the remit shows. Do the same if a later reprocessing removes the copay. A reversal may carry N857, “This claim has been adjusted/reversed. Refund any collected copayment to the member.” Track these refunds. Many states set time limits for paying them back.

Worked example (illustrative)

A patient sees a cardiologist. The card shows a $50 specialist copay, and the front desk collects $50. The remit shows CAS*PR*3*50.00 and pays the rest of the $180 allowance. The account balances, so the biller posts it and closes the visit.

Consider a second case. The same patient has an annual wellness visit, and the remit shows PR-3 of $25. The biller checks and finds the preventive diagnosis was listed second. She sends a corrected claim with the preventive diagnosis first, and the payer reprocesses with no copay. The $25 collected at check-in is refunded.

Prevention checklist

• [ ] Run eligibility before each visit and store the copay by visit type.
• [ ] Train the front desk on specialist, urgent care and telehealth copays.
• [ ] Flag QMB and dual-eligible patients so no copay is collected.
• [ ] Code preventive visits with the preventive diagnosis first.
• [ ] Reconcile collected copays against PR-3 lines every week.
• [ ] Refund overpayments promptly and log the date.

Related denial codes

• CO-3: copay under the contractual group.
• PR-1, PR-2, PR-3: deductible, coinsurance and copay together.
• PR-2: coinsurance amount.
• CO-45: charge exceeds the fee schedule.
• OA-23: impact of prior payer adjudication.
• Denial codes hub for every code we cover.

Key takeaways

PR-3 is the patient’s fixed copay, so most lines only need careful posting. Check the amount when it doesn’t match the plan, lands on preventive care, or shows up twice in a day. Never bill QMB patients for it, try the secondary first, and refund any copay a reprocessing removes.

FAQ

Sources

How we checked: every code quote on this page was compared word for word with the X12 CARC and RARC lists on 20 October 2026.

• X12, Claim Adjustment Reason Codes (CARC 3). Accessed 20 Oct 2026.
• X12, Remittance Advice Remark Codes (N766, N783, N857). Accessed 20 Oct 2026.
• HealthCare.gov, Copayment (glossary). Accessed 20 Oct 2026.
• HealthCare.gov, Preventive care benefits. Accessed 20 Oct 2026.
• CMS, Qualified Medicare Beneficiary program. Accessed 20 Oct 2026.

Last updated: 20 October 2026 · This page is educational and doesn’t replace payer contracts or coding rules.