OA-54: Multiple Physicians/Assistants Not Covered

What Does OA-54 Mean?

OA 54 is an informational adjustment used when the payer needs to document how payment was allocated among multiple providers. This is not a denial requiring corrective action — it is the payer's way of showing the payment calculation in multi-provider scenarios, typically in coordination of benefits situations.

CARC 54 appears when a claim includes charges for multiple physicians or assistants (such as an assistant surgeon, co-surgeon, or team surgeon) and the payer determines that coverage for additional providers is not supported for the billed procedure. This is a targeted denial that affects surgical and procedural billing where more than one provider is involved in the case.

The CMS physician fee schedule assigns payment indicators to every CPT code that specify whether assistant surgeons and co-surgeons are payable. Indicator 0 means assistant surgeon billing is not allowed, indicator 1 means it is allowed under certain conditions, indicator 2 means it is always allowed, and indicator 9 means the concept does not apply. Commercial payers generally follow similar rules, though some have stricter policies. When a provider submits a claim for an assistant surgeon using modifier 80, 81, 82, or AS on a procedure code where the payment indicator does not support it, CARC 54 is the result.

The practical takeaway is that this denial is often not appealable if the fee schedule genuinely does not support multiple provider billing for the procedure. However, if documentation demonstrates that the additional provider was medically necessary due to the complexity of the case — and the payment indicator allows for it with documentation — an appeal with the operative report may succeed.

Common Causes

How to Resolve

Check the fee schedule payment indicator for the CPT code, verify modifier accuracy, and either write off the denial or appeal with operative documentation.

1. Verify payment allocation Review the OA 54 adjustment to confirm the payment amounts are correctly distributed among the providers involved in the case.
2. Contact payer if incorrect If the adjustment amount appears wrong, contact the payer for clarification and request reprocessing with supporting documentation.

How to Prevent OA-54

• Submit claims for each provider with clear documentation of their specific role and services to ensure accurate payment allocation.
• Coordinate billing across all providers involved in the case to prevent conflicting claim submissions.

Also Filed As

The same CARC 54 may appear with different Group Codes:

Related Denial Codes