Denial Code 236 (CO-236, PR-236) — Meaning & What to Do
Claim Adjustment Reason Code (CARC)
What denial code 236 means: This code combination isn't allowed together under coding rules.
What to do about denial code 236: Ask the provider to review the coding (possible unbundling).
CO-236 vs PR-236 vs OA-236: what the prefix means
| Code on your EOB | What the prefix means | Who typically pays |
|---|---|---|
| CO-236 | Contractual obligation — the provider writes the amount off | Usually not the patient |
| PR-236 | Patient responsibility | The patient |
| OA-236 | Other adjustment | Often another payer or plan |
The prefix tells you who is expected to absorb the amount; the number (236) tells you why.
Related codes
CARC 234This procedure isn't paid separately.
CARC 237A legislatively mandated fee reduction was applied.
CARC 231This service isn't paid separately when done on the same day as another.
CARC 242Services weren't provided by network or approved 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 236
What does denial code 236 mean on my EOB?
This code combination isn't allowed together under coding rules.
What should I do about denial code 236?
Ask the provider to review the coding (possible unbundling).
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.