Denial Code 107 (CO-107, PR-107) — Meaning & What to Do
Claim Adjustment Reason Code (CARC)
What denial code 107 means: A related service or claim is required but wasn't found.
What to do about denial code 107: Ask the provider's billing office to explain or correct this, and resubmit if needed.
CO-107 vs PR-107 vs OA-107: what the prefix means
| Code on your EOB | What the prefix means | Who typically pays |
|---|---|---|
| CO-107 | Contractual obligation — the provider writes the amount off | Usually not the patient |
| PR-107 | Patient responsibility | The patient |
| OA-107 | Other adjustment | Often another payer or plan |
The prefix tells you who is expected to absorb the amount; the number (107) tells you why.
Related codes
CARC 104A managed-care withholding was applied to the payment.
CARC 108Adjusted under a rental/purchase rule for equipment.
CARC 102A major medical adjustment was applied.
CARC 110The billing date comes before the service date.
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 107
What does denial code 107 mean on my EOB?
A related service or claim is required but wasn't found.
What should I do about denial code 107?
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.