PR-1 is a Patient Responsibility adjustment that tells you the payer applied part or all of the allowed amount for a service to the patient’s deductible. The claim was processed, coverage was confirmed, and the balance moved to the patient because the deductible was not yet fully met. It is not a rejection of the claim, and in most cases it is not an error.
Billers still need to handle it carefully, because a PR-1 amount is only correct when the deductible data behind it is correct. This guide explains what PR-1 means, why it shows up, how to read it on an ERA or EOB, the exact steps to bill it, how Medicare and commercial plans differ, and how to correct it when the payer gets it wrong. It is one of the most important denial codes to know about among Patient Responsibility Codes in Medical Billing.
PR-1 means the allowed amount was applied to the patient’s deductible. Verify the deductible status on the date of service, check for secondary coverage, then bill the remaining balance to the patient. Ask for reprocessing or appeal only if the deductible was already met, the service should be exempt from the deductible, or the payer used the wrong plan or accumulator data.
Basics of PR-1
| Item | Detail |
| Full code | PR-1 (group code PR, claim adjustment reason code 1) |
| Group code PR | Patient Responsibility |
| CARC 1 | Deductible amount |
| Is it a denial? | No. It is a cost sharing adjustment, although the line often pays $0 |
| Who owes the amount | The patient, or a secondary payer if one applies |
| Typical payer payment | $0 on the line when the deductible absorbs the full allowed amount |
| Usual action | Verify, bill secondary coverage if any, then bill the patient |
| Appeal needed? | Only when the amount is wrong |
| Common companions | CO-45 (contractual write off) and PR-2 (coinsurance) |
What Does the PR-1 Denial Code Mean?
PR-1 is a Patient Responsibility adjustment code that indicates the payer applied an amount to the patient’s deductible. Although billing teams often call it the PR-1 denial code, it does not technically represent a claim denial. Instead, it identifies the deductible portion of the patient’s cost-sharing responsibility.
The group code PR identifies the adjustment as patient responsibility, while Claim Adjustment Reason Code (CARC) 1 specifies the deductible amount. The payer may apply the entire allowed amount or only the portion needed to satisfy the remaining deductible.
However, a PR-1 adjustment does not automatically mean the provider can bill the patient. Before transferring the balance to a patient statement, verify the patient’s benefits on the date of service, review any secondary insurance, and confirm that the payer’s contract and applicable laws permit the charge. If the adjustment conflicts with the plan’s benefits or deductible records, contact the payer for correction before billing.
Key takeaway: PR-1 identifies a deductible adjustment, not a rejected claim. Verify the adjustment and the patient’s actual financial responsibility before collecting payment.
Why PR-1 Is Often Called a Denial
The payer payment on a PR-1 line is frequently $0, and the line carries an adjustment, so many billing systems route it to the denial work queue. Nothing was denied, though. The service was covered and priced. The payer simply did not owe anything yet. A true coverage denial is reported with different reasons, such as not covered or not medically necessary, which you can see in codes like PR-96 and PR-50.
PR-1 also differs from the contractual write off that usually appears next to it. The CO-45 amount is the difference between the billed charge and the allowed amount, and the provider absorbs it.
Why Does PR-1 Appear on a Claim?
PR-1 is expected whenever a patient with a deductible receives a covered service before the deductible is satisfied. These are the situations that produce it most often:
| Situation | What happens | What to check |
| New plan year or deductible reset | Early claims of the year absorb the deductible | Plan year start date; many plans reset on January 1, others on a different date |
| High deductible health plan | Large PR-1 amounts across several visits | Remaining deductible and whether an HSA is attached |
| Family coverage | Deductible may be embedded per person or aggregate for the family | Which member the claim belongs to and which deductible applies |
| In network versus out of network | Separate deductibles are tracked for each | Network status on the date of service |
| Service type | Imaging, labs, surgery, and facility services often apply to the deductible | Benefit detail for that service category |
| New or changed coverage | Accumulators may start over mid year | Whether prior carrier credit was applied |
| Claims processed out of order | The deductible lands on a later date of service first | Dates of service compared with processing dates |
How PR-1 Differs From PR-2 and PR-3
PR-1, PR-2, and PR-3 are the three core cost sharing reasons. They often appear on the same claim, and they are applied in an order set by the plan.
| Code | Meaning | Type of amount | When it applies |
| PR-1 | Deductible | Dollar amount up to the remaining deductible | Until the annual deductible is met |
| PR-2 | Coinsurance | Percentage of the allowed amount | Usually after the deductible, for covered services |
| PR-3 | Copayment | Fixed dollar amount | For visit types or services the plan assigns a copay |
How to Read PR-1 on an ERA or EOB
On an electronic remittance advice (ERA), the 835 transaction reports claim adjustments through the CAS (Claims Adjustment) segment. Each adjustment includes a group code, a reason code, and an adjustment amount. The payer may report multiple adjustments in the same CAS segment when different reasons apply.
For example, a claim may include CO-45 for the contractual adjustment, PR-1 for the deductible, and PR-2 for coinsurance. These adjustments represent different portions of the claim and should not be treated interchangeably.
Example 1: The deductible absorbs the entire allowed amount
CAS*CO*45*220.00~
CAS*PR*1*180.00~
The provider billed $400, the payer allowed $180, and the $220 difference represents the contractual adjustment. The entire $180 allowed amount applies to the deductible, leaving no payment from the primary payer.
Example 2: The remaining deductible is partly satisfied
CAS*CO*45*300.00~
CAS*PR*1*150.00~
CAS*PR*2*50.00~
The provider billed $700, and the payer allowed $400. The contractual adjustment is $300. Of the allowed amount, $150 applies to the remaining deductible and $50 represents coinsurance. The primary payer pays the remaining $200.
Before posting either example, confirm that the adjustment amounts agree with the complete remittance and that the claim’s payment and adjustment totals reconcile. The examples illustrate the adjustment logic; actual 835 reporting may vary depending on the payer’s remittance structure.
Important: PR-1 and PR-2 may appear on the same claim when the deductible is only partly satisfied. Bill the patient only after checking secondary coverage and confirming that the remaining balance qualifies as patient responsibility.
PR-1 Examples: Full and Partial Deductible
These two examples show the math behind the adjustments. In both, the patient has 20% coinsurance after the deductible.
| Item | Example A: deductible absorbs the claim | Example B: deductible partly remaining |
| Billed charge | $400 | $700 |
| Allowed amount | $180 | $400 |
| CO-45 contractual write off | $220 | $300 |
| Deductible remaining before the claim | $500 | $150 |
| PR-1 amount | $180 | $150 |
| PR-2 coinsurance (20% of the remaining $250) | $0 | $50 |
| Plan payment | $0 | $200 |
| Patient owes | $180 | $200 |
| Balance check | $0 + $220 + $180 = $400 | $200 + $300 + $150 + $50 = $700 |
In Example A, the patient still has $320 of deductible remaining after this claim, meaning the next covered service will likely include PR-1 as well. For both examples, the CO-45 amount represents a contractual write-off and must never be included on the patient statement.
How to Bill a PR-1 Adjustment: Step by Step
- Confirm the claim balances. The billed charge should equal the payer payment plus every adjustment on the claim. If it does not tie, resolve that before posting a patient balance.
- Match PR-1 to the patient’s benefits on the date of service. Use the eligibility response (a 270 and 271 benefit inquiry or the payer portal) to compare the deductible remaining, the plan year dates, and the network status with what the payer applied for.
- Confirm PR is the correct group code. A reason that belongs to the provider under the contract should not be reported to the patient. When the group code looks wrong, you need to know How to Correct Patient Responsibility Billing Errors.
- Check for secondary coverage. A Medigap policy, an employer plan, or Medicaid may pay the deductible. Send the claim to the secondary payer with the primary payer’s PR-1 amount before billing the patient.
- Post the adjustments correctly. Write off only the CO-45 amount. Move PR-1 to patient responsibility, keep it tagged as deductible for reporting, and do not write it off.
- Send a clear patient statement. Show the date of service, the charge, the contractual adjustment, the insurance payment, and the deductible amount with a short explanation and payment options.
- Follow up and document. Record the statement date and any patient contact. If the patient says the deductible was met, ask for their EOBs and compare them with your remit before reversing anything.
Plain Language for the Patient
Patients understand deductibles better when the statement explains what happened. A line such as the following works well: “Your plan applied $180 of the approved amount to your yearly deductible. This is the amount you pay before your plan begins sharing costs. Your plan has $320 of deductible remaining.”
If the patient calls, verify the plan’s deductible, confirm how much the patient has already paid toward it, and discuss payment options with the practice. Offering a payment plan for a large first of the year balance often keeps the account out of collections.
When PR-1 Is Wrong: How to Spot It and Fix It
A PR-1 amount can be wrong even when the claim balances. Watch for these signs:
- • The patient already met the deductible according to their other EOBs or the payer portal.
- • The deductible was applied to a preventive service that the plan should cover without cost sharing.
- • The PR-1 amount is larger than the deductible remaining on the eligibility response.
- • The deductible was applied to a service with a flat copay benefit.
- • The payer used the wrong plan year, the wrong family member, or the wrong network tier.
- • Coverage dates are the real problem, in which case the claim may belong with PR-26 or PR-27 instead.
Which Route Fixes It
| Situation | Best route |
| Your claim had wrong data, such as subscriber ID, modifier, or diagnosis | Submit a corrected claim |
| The data was right but the payer used the wrong accumulator | Request reprocessing through the payer representative or portal |
| The payer disputes that the service is exempt from the deductible | File a formal appeal or reconsideration with the plan benefit documents |
| The patient had other coverage or different dates of coverage | Correct the coverage record and rebill the right payer |
Gather proof before you call: the patient’s other EOBs, a screenshot of the payer accumulator, the eligibility response from the visit, any call reference numbers, and the plan summary of benefits. Follow the payer’s filing limits for corrected claims and appeals, since they vary by contract.
Practices that see repeat PR-1 corrections by the same payer usually have a pattern, and a medical billing audit for denial and adjustment accuracy can show whether the cause is registration data, posting, or payer processing.
PR-1 on Medicare Claims
Under Original Medicare, PR-1 usually reflects the annual Part B deductible. For 2026, CMS set the Medicare Part B deductible at $283. Once the patient meets this deductible, they generally pay 20% of the Medicare-approved amount for most Part B services. The Part A inpatient hospital deductible for 2026 is $1,736 per benefit period. These figures change every year, and CMS announces the next set in the fall.
Secondary coverage matters here. Some Medigap plans, specifically Plans C and F, cover the Part B deductible, but they are not available to people who became eligible for Medicare on or after January 1, 2020. When a Medigap plan participates in crossover, the claim forwards automatically and a remark on the remittance usually signals it. Wait for the crossover to process before billing the patient. Medicare Advantage plans set their own deductibles, so do not apply Original Medicare amounts to those claims.
PR-1 on Commercial and High Deductible Plans
Commercial plans vary widely, and the deductible is where most of the variation sits. For 2026 the IRS requires an HSA eligible high deductible health plan to have a minimum deductible of $1,700 for self only coverage and $3,400 for family coverage. Many plans go well above those minimums.
- • Embedded deductibles give each family member an individual deductible inside the family limit.
- • Aggregate deductibles require the family as a whole to reach the family amount before the plan pays.
- • Many high deductible plans cover certain preventive services before the deductible, so check coding and plan rules before billing PR-1 on a preventive visit.
- • Claims volume with PR-1 often rises in the first quarter, when plan years reset, so reverify benefits at the start of each year.
Medicaid plans generally do not require patients to meet a deductible. If a Medicaid claim includes a PR-1 adjustment, review the patient’s coverage and applicable state rules before billing any amount to the patient.
Can You Waive or Write Off a PR-1 Balance?
Routinely waiving deductibles and copays can violate payer contracts and may raise fraud and abuse concerns. A practice should apply a written financial assistance policy consistently, base it on documented need, and have legal counsel review it. A one time hardship adjustment under that policy is different from a standing practice of not collecting the deductible.
How to Reduce PR-1 Surprises
Most PR-1 disputes begin at scheduling and registration, not at posting. These habits reduce them:
- • Verify eligibility and deductible status at scheduling and again before the visit.
- • Reverify active patients in the first weeks of the plan year.
- • Give patients a cost estimate and collect the expected deductible portion at the point of service.
- • Store the plan year, network tier, and deductible remaining in the patient record.
- • Capture secondary coverage at every visit.
Practices that cannot staff this consistently often turn to insurance eligibility verification via credentialing services so that benefits are checked before the patient arrives.
Common PR-1 Billing Mistakes
- • Writing off PR-1 as if it were a contractual adjustment
- • Billing the patient before checking secondary coverage
- • Treating every PR-1 as a denial that needs an appeal
- • Applying a patient payment to the wrong date of service
- • Billing the patient for the CO-45 write off along with PR-1
- • Ignoring the plan year reset when verifying benefits
- • Relying on a deductible figure from an old eligibility check
- • Missing a preventive service that should have had no cost sharing
PR-1 Quick Checklist
- • Does the claim balance?
- • Does PR-1 match the deductible remaining on the date of service?
- • Is PR the right group code for this reason?
- • Is there a secondary payer to bill first?
- • Can the patient be billed under the payer contract and program rules?
- • Is the statement clear and the follow up documented?
Frequently Asked Questions
Q1- Is PR-1 a denial code?
No. PR-1 shows that the allowed amount was applied to the patient’s deductible. The claim was processed and covered, and the patient owes the amount.
Q2- Why did the insurance pay $0 on a PR-1 line?
When the deductible absorbs the entire allowed amount, the plan has nothing left to pay on that line.
Q3- Should I bill the patient for PR-1?
Yes, after you confirm the claim balances, the deductible data is correct, and no secondary payer owes the amount.
Q4- Can I appeal PR-1?
Only when the amount is wrong, such as when the deductible was already met, the service should be exempt, or the payer used incorrect plan data.
Q5- What is the difference between PR-1 and CO-45?
PR-1 is the deductible the patient owes. CO-45 is the contractual write off the provider absorbs.
Q6- Does a PR-1 amount count toward the out of pocket maximum?
Generally yes. Deductible payments usually count toward the plan’s out of pocket maximum for covered in network services, but confirm in the plan documents.
Q7- Why does PR-1 appear on a claim for a patient who says the deductible is met?
The payer accumulator may be outdated, the claims may have been processed out of order, or the wrong plan or family member may have been used. Compare the patient’s EOBs with your remit.
Q8- What does PR-1 mean on a Medicare remittance?
It usually reflects the annual Part B deductible, which is $283 for 2026.
Q9- Can a practice waive the PR-1 amount?
Routine waivers can create contract and compliance risk. Use a written financial assistance policy and consult legal counsel.
Conclusion
PR-1 is not a true claim denial. It indicates that part or all of the allowed amount has been applied to the patient’s deductible. However, this does not mean every PR-1 adjustment should automatically become a patient bill. Medical practices must first verify the deductible status, review the EOB or ERA, and confirm whether secondary insurance is responsible for any remaining balance.
When a PR-1 adjustment appears incorrect, identifying the cause is essential. Whether the issue involves an already-met deductible, incorrect payer information, or a service that should be exempt from the deductible, taking the appropriate action can prevent billing disputes and unnecessary payment delays.
Accurate PR-1 handling helps practices avoid incorrect patient charges, maintain clean financial records, and improve collections. The key is to verify before billing, correct genuine errors promptly, and communicate patient responsibility clearly.
Need Help Managing PR-1 Adjustments? PHCS Can Help
Incorrect PR-1 adjustments, missed secondary coverage, and billing errors can delay payments and create unnecessary patient disputes. At Proactive Healthcare Services, we help medical practices manage PR-1 adjustments through accurate deductible verification, proper payment posting, secondary insurance billing, and timely follow-up on incorrect adjustments. Our billing team reviews discrepancies, works with payers to reprocess claims when necessary, and ensures patients receive bills only for amounts they genuinely owe. Stop losing valuable time on billing errors. Contact PHCS today to simplify your billing process, improve collections, and keep your revenue cycle running smoothly.
