PR-85: Patient Interest Adjustment
The patient owes this patient interest adjustment. Verify the balance and collect from the patient.
What Does PR-85 Mean?
With PR (Patient Responsibility), the patient interest adjustment is the patient's financial obligation. The insurer processed the claim, applied the patient's plan benefits, and this amount is owed directly by the patient. The most common scenario is the payer delayed processing or payment beyond contractual or regulatory timeframes, resulting in interest charges that accrue on the patient's account as part of the overall balance adjustment.
CARC 85 appears on a remittance when the payer adjusts payment for the patient interest adjustment. This is a standard plan-defined cost-sharing amount that the patient is obligated to pay per their insurance benefits. The code confirms the payer processed the claim correctly and applied the plan's benefit structure as designed.
Common scenarios that trigger this adjustment include: the payer delayed processing or payment beyond contractual or regulatory timeframes, resulting in interest charges that accrue on the patient's account as part of the overall balance adjustment; The patient failed to make timely payments on their balance according to the agreed-upon payment plan or terms, and interest charges were applied to the outstanding amount; A denied claim made the patient responsible for the full charge, and interest accrued during the time between the denial and patient notification or payment. The group code paired with CARC 85 determines who bears the financial responsibility — PR shifts it to the patient, CO places it on the provider as a contractual obligation, OA indicates a coordination of benefits or other payer adjustment.
Common Causes
| Cause | Frequency |
|---|---|
| Late payment by insurance company triggering interest The payer delayed processing or payment beyond contractual or regulatory timeframes, resulting in interest charges that accrue on the patient's account as part of the overall balance adjustment | Most Common |
| Patient non-compliance with payment terms The patient failed to make timely payments on their balance according to the agreed-upon payment plan or terms, and interest charges were applied to the outstanding amount | Most Common |
| Claim denial resulting in patient interest liability A denied claim made the patient responsible for the full charge, and interest accrued during the time between the denial and patient notification or payment | Common |
| Delayed claim submission by provider The provider submitted the claim late, causing delayed adjudication and subsequent interest charges that are passed to the patient's account | Common |
| Coordination of benefits delays Disputes or processing delays between multiple insurers prolonged claim resolution, and interest charges accumulated during the extended processing period | Occasional |
| State prompt-pay law interest requirement Some states require payers to add interest when claims are not paid within mandated timeframes. This interest may be reflected as a patient adjustment when the underlying charge is the patient's responsibility | Occasional |
How to Resolve
- Verify the patient interest adjustment Cross-reference the adjusted amount against the patient's benefits summary or eligibility response to confirm the patient interest adjustment was applied correctly per plan terms.
- Confirm plan benefit details Review the patient's specific plan structure. Confirm the correct amount was applied for this service type.
- Generate a patient statement Prepare a clear statement showing the service rendered, the allowed amount, the patient interest adjustment, and the balance the patient owes.
- Collect from the patient Send the statement and follow your practice's collection workflow. Offer payment plan options for substantial balances.
- Track and follow up Record payments received, update the account balance, and follow up on outstanding amounts per your collection policy.
This is a standard patient cost-sharing obligation per the benefit plan design. The claim was processed correctly — the amount is the patient's financial responsibility. Collect from the patient rather than appealing.
Common RARC Pairings
The RARC code tells you exactly what triggered the PR-85:
| RARC | Description |
|---|---|
| N115 | This adjustment represents interest charges applied to the patient's outstanding balance Review the interest calculation and verify it matches plan terms or state regulations → |
| N381 | Consult your contractual agreement or state regulations for interest charge rules and patient billing guidelines Review your contractual agreement for billing restrictions and payment terms for this service → |
How to Prevent PR-85
- Submit claims within required timeframes to avoid processing delays that could generate interest charges
- Verify patient benefits and eligibility before service delivery to reduce claim denials that lead to delayed payment and interest accrual
- Maintain accurate patient demographic and insurance information to prevent claim rejections that prolong the payment cycle
- Implement clear patient payment policies with transparent terms about interest charges on overdue balances
- Monitor claim processing timelines and follow up on aged claims before interest triggers are reached
- Train staff on state-specific prompt-pay regulations that may affect interest charge calculations
Also Filed As
The same CARC 85 may appear with different Group Codes:
Related Denial Codes
Sources
- https://www.cms.gov/medicare/claims-appeals/organization-determinations
- https://www.aapc.com/resources/claim-adjustment-reason-code-carc
- https://www.mdclarity.com/denial-code/85
- Codes maintained by X12. Visit x12.org for official definitions.