CO-32: Claim Exceeds Benefit Maximum for Bilateral Procedure
CO (Contractual Obligation)What is CO-32?
CO-32 is a Contractual Obligation code indicating the adjustment is for a bilateral procedure that exceeds the benefit maximum or the payer's bilateral pricing rules. Bilateral procedures may be reimbursed at 150% of the unilateral rate, not 200%.
Why Does CO-32 Occur?
- Bilateral procedure billed as two separate claims instead of with modifier 50.
- Payer applies 150% reimbursement rule for bilateral procedures.
- Bilateral modifier not recognized by the payer's system.
How to Fix CO-32 Denials
- Verify the payer's bilateral pricing policy. Most payers pay 150% of the unilateral fee for bilateral procedures.
- If the claim was billed as two separate procedures, combine into one line with modifier 50 and resubmit.
- If the payer's bilateral reduction is incorrect, appeal with documentation of the procedure and the expected reimbursement.
CO-32 by Payer
| Payer | Common RARC | Appeal Deadline | Notes |
|---|---|---|---|
| UnitedHealthcare | Varies | 60 days from remittance | Reconsideration required before formal appeal. |
| Anthem | Varies | 365 days from denial notice | Check state-specific provider manual for variations. |
| Aetna | Varies | 180 days from denial | Strict in-network filing enforcement. |
| Cigna | Varies | 180 days from denial | Cigna COB team: 1-800-244-6224. |
| Medicare | Varies | 120 days (redetermination at MAC) | Five levels of appeal starting with MAC redetermination. |
Related CARC Codes
If you are seeing CO-32, check these related codes: CO-16 (claim differs), CO-45 (fee schedule), CO-29 (timely filing).
Common Questions About CO-32
What does CO-32 mean?
CO-32 indicates claim exceeds benefit maximum for bilateral procedure. Check the RARC code on the EOB for the specific reason and follow the resolution steps above.
Can I appeal a CO-32 denial?
Yes. Commercial payers allow 60-365 days to appeal depending on the payer. Gather supporting documentation before filing. Medicare allows 120 days for a redetermination request.
Altair catches CO-32 denials before submission with bilateral procedure validation. See how pre-submit claim scoring works.