CO-132: Prearranged Demonstration Project Adjustment

What Does CO-132 Mean?

CO-132 is the standard pairing, confirming the demonstration project adjustment is a contractual obligation. The provider agreed to the modified payment terms by enrolling in the CMS demonstration program and must absorb the adjustment. The amount cannot be billed to the patient. This is expected for all providers participating in ACO REACH, bundled payment programs, or other Medicare innovation models.

CARC 132 appears when a claim is adjusted due to the provider's participation in a CMS-approved demonstration project or alternative payment model. These programs — including ACO REACH, Direct Contracting, bundled payment initiatives, and other Medicare innovation models — use modified payment methodologies that differ from standard fee-for-service reimbursement. The adjustment reflects the payment difference between the standard Medicare rate and the demonstration-specific rate.

This code is specific to Medicare and its alternative payment programs. Providers who have signed agreements to participate in demonstration projects should expect CARC 132 adjustments as a routine part of their remittances. The adjustment amount varies depending on the specific program and its payment formula, but it is always a contractual obligation — the provider agreed to the modified payment terms by enrolling in the program.

Providers who receive CARC 132 unexpectedly should verify their enrollment status. In some cases, a facility or provider may have been enrolled in a demonstration project without full awareness of its impact on claims, particularly when organizational agreements (such as an ACO's participation) affect individual provider claims. The accompanying RARC N763 is a strong indicator that the demonstration code applied to the service may be incorrect, warranting a review with the program administrator.

Common Causes

How to Resolve

Verify demonstration project enrollment, confirm the adjustment is correct, and write off as a contractual obligation.

1. Confirm enrollment and program terms Verify that your organization is enrolled in the demonstration project and that the adjustment aligns with the program's payment methodology.
2. Post as contractual adjustment Write off the adjustment as a routine cost of participation in the demonstration program.
3. Escalate if enrollment is incorrect If your organization is not enrolled in the demonstration project, contact Medicare immediately to correct the enrollment error and request reprocessing of affected claims.

Common RARC Pairings

The RARC code tells you exactly what triggered the CO-132:

How to Prevent CO-132

• Maintain awareness of all CMS demonstration projects and alternative payment models your organization participates in
• Ensure billing staff understand the payment impact of each demonstration project on claim processing
• Monitor CMS transmittals and program communications for changes to demonstration project payment methodologies
• Conduct regular audits of demonstration project adjustments to ensure they are calculated correctly
• Maintain clear communication with the demonstration project administrator for questions about adjustment rules

General Prevention

• Maintain awareness of all CMS demonstration projects your organization is enrolled in and their impact on claims processing
• Ensure billing staff are trained on the specific coding and documentation requirements for each demonstration project
• Monitor CMS communications and transmittals for updates to demonstration project rules and payment methodologies
• Conduct regular audits of demonstration project claims to ensure proper coding and compliance with project guidelines
• Maintain open communication with the demonstration project administrator for clarification on adjustment rules

Also Filed As

The same CARC 132 may appear with different Group Codes:

Related Denial Codes