Denial Code 59 (CO-59, PR-59) — Meaning & What to Do
Claim Adjustment Reason Code (CARC)
What denial code 59 means: Charges were adjusted based on multiple or concurrent procedure rules.
What to do about denial code 59: Ask the provider's billing office to explain or correct this, and resubmit if needed.
CO-59 vs PR-59 vs OA-59: what the prefix means
| Code on your EOB | What the prefix means | Who typically pays |
|---|---|---|
| CO-59 | Contractual obligation — the provider writes the amount off | Usually not the patient |
| PR-59 | Patient responsibility | The patient |
| OA-59 | Other adjustment | Often another payer or plan |
The prefix tells you who is expected to absorb the amount; the number (59) tells you why.
Related codes
CARC 58The service should have been given in a different, approved setting.
CARC 76Payment was already made for this service under another claim.
CARC 54Charges from multiple physicians for the same care were reduced.
CARC 77This is a covered service, but the charge is the patient's responsibility.
Keep reviewing your bill
- Medical Bill vs EOB: What Is the Difference?
- How to Dispute a Medical Bill — Find Billing Errors Before You Pay
Frequently asked questions about Denial code 59
What does denial code 59 mean on my EOB?
Charges were adjusted based on multiple or concurrent procedure rules.
What should I do about denial code 59?
Ask the provider's billing office to explain or correct this, and resubmit if needed.
Found this code on your bill or EOB?
Upload the document — MD Bill Check decodes every code, checks the math line by line, and explains what's worth questioning.