How to Appeal PR-57 Denial: Excess units — patient responsibility
Units above the payer's covered maximum have been assigned to the patient. This guide explains what it means, why it happens, and exactly how to build a winning appeal.
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What Does PR-57 Mean?
Units above the payer's covered maximum have been assigned to the patient.
Commonly seen in:
Step-by-Step Appeal Guide for PR-57
- 1
Pull the original claim and identify every CPT/HCPCS code and modifier submitted
- 2
Compare your coding to the CPT guidelines and payer-specific billing manual
- 3
Gather the operative report, progress notes, or other documentation supporting your coding
- 4
Draft a cover letter explaining the clinical rationale for the code/modifier combination
- 5
Attach supporting documentation and resubmit within the payer's appeal deadline
Counter-Arguments to Use in Your Appeal
These are the strongest arguments medical billing professionals use to overturn PR-57 denials.
Appeal the medical necessity for additional units before billing the patient
Verify whether a patient ABN or waiver was signed before services were rendered
Document clinical necessity for the additional units
For Medicare, a valid ABN is required to bill patients for non-covered units
Regulations and Guidelines to Cite
Citing specific regulations strengthens your appeal and demonstrates you know your rights.
Expert Tip for PR-57 Appeals
Win the medical necessity appeal first. Only bill the patient for excess units if you have a signed patient liability agreement or ABN.
Frequently Asked Questions
What is a PR-57 denial code?
Units above the payer's covered maximum have been assigned to the patient.
Can I appeal a PR-57 denial?
Yes. All insurance denials are appealable. Follow the step-by-step guide above and submit your appeal before the payer's deadline, typically 180 days from the denial date.
What documentation do I need to appeal PR-57?
For a PR-57 denial, you typically need: the original denial letter/EOB, clinical documentation supporting the service, any prior authorization records, and a cover letter citing the relevant regulations listed above. The specific documents depend on why the denial was issued.
How long does a PR-57 appeal take?
Most payers are required to process standard appeals within 30–60 days. Expedited appeals (for urgent care) must be decided within 72 hours. Under ERISA, group health plans must provide an appeal decision within 60 days for pre-service and 60 days for post-service claims.
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