Denial Code 58 (CO-58, PR-58) — Meaning & What to Do
Claim Adjustment Reason Code (CARC)
What denial code 58 means: The service should have been given in a different, approved setting.
What to do about denial code 58: Ask the provider's billing office to explain or correct this, and resubmit if needed.
CO-58 vs PR-58 vs OA-58: what the prefix means
| Code on your EOB | What the prefix means | Who typically pays |
|---|---|---|
| CO-58 | Contractual obligation — the provider writes the amount off | Usually not the patient |
| PR-58 | Patient responsibility | The patient |
| OA-58 | Other adjustment | Often another payer or plan |
The prefix tells you who is expected to absorb the amount; the number (58) tells you why.
Seeing denial code 58 on your EOB?
A denial code tells you what the payer reported, but it may not tell the whole story. Reviewing your EOB and bill together can help clarify what may need attention.
Related codes
CARC 54Charges from multiple physicians for the same care were reduced.
CARC 59Charges were adjusted based on multiple or concurrent procedure rules.
CARC 53Services by this type of provider aren't covered under the plan.
CARC 76Payment was already made for this service under another claim.
Keep reviewing your bill
- Medical Bill vs EOB: What Is the Difference?
- How to Dispute a Medical Bill — Find Billing Errors Before You Pay
- What Is an Itemized Medical Bill? How to Request One
Frequently asked questions about Denial code 58
What does denial code 58 mean on my EOB?
The service should have been given in a different, approved setting.
What should I do about denial code 58?
Ask the provider's billing office to explain or correct this, and resubmit if needed.
Seeing this code on your own EOB?
Upload the EOB, the bill, or both — MD Bill Check reads the codes on your documents, compares them side by side, and flags what's worth questioning. Free, no account needed.