Denial Code 237 (CO-237, PR-237) — Meaning & What to Do
Claim Adjustment Reason Code (CARC)
What denial code 237 means: A legislatively mandated fee reduction was applied.
What to do about denial code 237: Ask the provider's billing office to explain or correct this, and resubmit if needed.
CO-237 vs PR-237 vs OA-237: what the prefix means
| Code on your EOB | What the prefix means | Who typically pays |
|---|---|---|
| CO-237 | Contractual obligation — the provider writes the amount off | Usually not the patient |
| PR-237 | Patient responsibility | The patient |
| OA-237 | Other adjustment | Often another payer or plan |
The prefix tells you who is expected to absorb the amount; the number (237) tells you why.
Related codes
CARC 236This code combination isn't allowed together under coding rules.
CARC 242Services weren't provided by network or approved providers.
CARC 234This procedure isn't paid separately.
CARC 243Services aren't authorized by network or plan providers.
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 237
What does denial code 237 mean on my EOB?
A legislatively mandated fee reduction was applied.
What should I do about denial code 237?
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.