PR-3 is the patient's fixed copay for the visit. If you collected it at check-in, post it and close the balance. If you did not, bill the patient for it.
The official wording
The X12 Claim Adjustment Reason Code list defines 3 as: "Co-payment Amount"
The letters in front are the group code. CO means contractual obligation (the provider absorbs it), PR means patient responsibility, and OA is other adjustment. The same reason code can come with different group codes, so always read both.
What PR-3 is telling you
A copay is a fixed dollar amount, such as $30 for an office visit, that the patient pays for a service. The payer takes it off its payment and reports it as PR-3.
Most of the trouble with PR-3 is in posting. If the front desk already took the copay and the biller does not match it to the remittance, the patient can get a bill for money they already paid.
Send us the list: payer, date of service, denial code and amount. No patient names needed. We will tell you which claims can still be fixed, which need an appeal, and which deadlines are close. Free, usually within 2 business days. Want the full picture? Get a free 90-day denial audit from your ERA files.
Run a billing company? Add a trained biller from $8/hour, first 25 claims free.
Common causes
- The normal copay on the patient's plan.
- A specialist copay instead of a primary care copay, if the provider's specialty is set that way at the payer.
- A copay applied to a visit the patient expected to be free, such as a preventive visit billed with a problem visit.
How to fix it
- Check whether the copay was collected at check-in.
- If it was, post the payment against the PR-3 amount and close the balance.
- If it was not, bill the patient the PR-3 amount.
- If the amount looks wrong, compare it to the eligibility response. A specialist copay on a primary care visit may mean the provider's taxonomy is wrong at the payer.
How to prevent it
- Collect the copay at check-in, every visit.
- Check the copay amount in the eligibility response, not from memory.
- Post copays the same day so they match the remittance later.
One claim, line by line
A patient has a $30 primary care copay and paid it at check-in. The visit has a $180 charge and a $120 allowed amount.
| Line on the remittance | Amount | What to do |
|---|---|---|
| Billed charge | $180.00 | |
| CO-45 | $60.00 | Write off. Billed minus allowed. |
| PR-3 | $30.00 | Match it to the $30 taken at check-in |
| Paid by payer | $90.00 | Allowed minus the copay |
| Patient balance | $0.00 | Nothing to bill. The copay was already paid. |
If the front desk did not collect it, the $30 goes on the patient statement.
PR-3 problems and what they mean
| What you see | Likely cause | Fix |
|---|---|---|
| Specialist copay on a primary care visit | Provider's taxonomy or specialty is wrong at the payer | Update the provider record with the payer |
| Copay on a preventive visit | A problem visit was billed with the preventive visit | Normal if documented. Explain it to the patient. |
| Copay on a second visit the same day | Two separate claims or encounters | Check if the plan allows one copay per day |
| Patient billed for a copay they already paid | Check-in payment not posted to that visit | Post the payment to the right date of service |
How to post PR-3
- Find any copay collected at check-in for that date of service.
- Apply it against the PR-3 line.
- If nothing was collected, move the PR-3 amount to the secondary payer or the patient.
- If the copay collected was more than PR-3, refund or credit the difference.
PR-3 checklist
- ☐ Check-in payments are posted the same day.
- ☐ The copay collected matches the PR-3 amount.
- ☐ A secondary plan has been billed if it covers copays.
- ☐ No patient statement goes out for a copay already paid.
Questions people ask about PR-3
Is PR-3 a denial?
No. It is the patient's copay, taken off the payer's payment.
The patient already paid. Why is there a balance?
Usually the copay was collected but not posted to that visit. Post the payment and the balance closes.
Can a secondary plan pay the copay?
Sometimes. Medicaid and some secondary plans cover copays, so send the claim to the secondary payer before billing the patient.
What if we collected more than the PR-3 amount?
Refund the difference or apply it as a credit, following your refund policy and any state rules.
Is a copay the same as coinsurance?
No. A copay (PR-3) is a fixed dollar amount. Coinsurance (PR-2) is a percentage of the allowed amount.
Why does the PR-3 show a specialist copay?
The payer may list the provider under a specialist taxonomy. Check the provider's enrollment details with that payer.
Seeing PR-3 on your remittances?
Send us 25 claims and we will group your denials by reason and remark code and show you which fix removes the most of them. Free, no setup fee.
Start the free 25-claim trialFiling limits, appeal windows and claim addresses change quietly. Get one short email a month with what changed and the free tools we add.
One email a month. No spam. Unsubscribe any time.Other denial code guides
All denial code guides
PR-1 · PR-2 · PR-3 · CO-4 · CO-5 · CO-11 · CO-15 · CO-16 · OA-18 · CO-22 · OA-23 · CO-24 · CO-26 · CO-27 · CO-29 · CO-31 · CO-45 · CO-49 · CO-50 · CO-59 · PR-96 · CO-97 · CO-109 · CO-119 · CO-129 · CO-140 · CO-146 · CO-151 · CO-167 · CO-170 · CO-181 · CO-185 · CO-197 · CO-198 · PR-204 · CO-234 · CO-236 · CO-242 · CO-252 · CO-253 · CO-288 · CO-A1 · CO-B7 · MA130 · N130 · N23 · N290
Timely filing limits by payer: Cigna timely filing limit · HealthSpring timely filing limit · Aetna timely filing limit · UnitedHealthcare timely filing limit · Humana timely filing limit · corrected claim timely filing limits
Sources: X12 Claim Adjustment Reason Code list (3), read October 26, 2026; CMS Medicare guidance where Medicare rules are mentioned; Example amounts are for illustration only. Last reviewed October 27, 2026. General information, not coding or legal advice. Payer rules differ, so check the remark code and the payer's own policy.