OA-B1: Non-Covered Visits

What Does OA-B1 Mean?

OA-B1 appears in coordination of benefits scenarios where the non-covered visit determination applies to a specific payer in the billing sequence. The visit may be non-covered by the primary payer but could be covered by a secondary payer. The provider should submit the claim to the next payer in the COB sequence before determining the final financial responsibility.

When CARC B1 appears on a remittance, the payer is telling you that the specific visit or service billed is not a covered benefit under the patient's insurance plan. This is a broad coverage denial that can apply to many service types — office visits, therapy sessions, specialty consultations, or any encounter that falls outside the plan's benefit structure.

The group code paired with B1 is critical for determining your next action. CO-B1 means the non-covered visit is a contractual obligation where the provider absorbs the cost — typically seen when the provider is in-network and the contract limits what can be billed for non-covered services. PR-B1 means the non-covered visit is the patient's financial responsibility — the patient knew or should have known the service was not covered, and the provider can bill the patient for the full amount.

B1 denials can stem from straightforward plan exclusions (the plan simply does not cover that type of visit) or from more nuanced issues like exceeded benefit limits, missing prior authorization, or incorrect coding that made a covered service appear non-covered. Before accepting the denial, it is worth verifying that the correct procedure code was used and that the service does not fall under a covered benefit category. A simple code correction can sometimes convert a B1 denial into a paid claim.

How to Resolve

Verify whether the service is genuinely non-covered or if a coding or authorization issue caused the denial, then take action based on the group code.

1. Submit to the secondary payer Forward the claim to the next payer in the COB sequence with the primary payer's remittance attached. The secondary plan may cover the service that the primary plan denied.
2. Determine final responsibility After all payers have adjudicated, assess the remaining balance and determine whether it is a provider write-off or patient responsibility based on the final group code assignments.

Common RARC Pairings

The RARC code tells you exactly what triggered the OA-B1:

How to Prevent OA-B1

• Verify coverage across all payers in the COB sequence before rendering services to identify non-covered services early
• Submit to the correct primary payer first and wait for adjudication before filing with secondary payers

General Prevention

• Verify insurance coverage and check remaining benefit limits for the specific visit type before scheduling appointments
• Obtain prior authorization when required by the payer for specific visit types or service categories
• Inform patients in advance if a planned visit may not be covered by their insurance, including an estimate of out-of-pocket costs
• Ensure the correct visit type and procedure codes are used on claims to avoid misclassification as non-covered
• Track visit frequency against benefit limits to proactively notify patients when they are approaching or have reached their maximum covered visits
• Stay current with payer policy changes regarding covered visit types and benefit limitations

Also Filed As

The same CARC B1 may appear with different Group Codes:

Related Denial Codes