CO-254: Dental Plan Benefits Not Available - Submit to Medical

What Does CO-254 Mean?

CO-254 is a contractual adjustment from the dental plan indicating the service is not covered under dental benefits. The dental plan is routing the claim to the medical plan — this is not a final denial of the service itself. The provider should not post as a contractual adjustment based on the dental plan's denial alone; instead, submit to the medical plan first. The patient's liability depends on the medical plan's coverage determination.

CARC 254 fires when a dental plan receives a claim and determines the billed services are not covered under the patient's dental benefits. The dental plan is explicitly directing the provider to resubmit the claim to the patient's medical insurance plan, where the services may be covered. This is not a statement that the services are non-covered entirely — it is a routing instruction.

This code applies to services that straddle the line between dental and medical coverage. Common examples include oral surgery procedures (jaw fracture treatment, cyst removal), TMJ/TMD treatment, oral biopsies, dental services related to trauma or accidents, and medically necessary extractions prior to radiation therapy. These services often have medical rather than dental insurance coverage, but providers may initially submit to the dental plan out of habit or because the service occurred in a dental setting.

CARC 254 appears with Group Code CO, making it a contractual adjustment on the dental plan side. The provider's next step is to obtain the patient's medical insurance information and rebill the claim to the medical plan using appropriate medical coding (CPT/ICD-10 rather than CDT codes). If the patient has no medical insurance or the medical plan also denies coverage, the patient may become financially responsible.

Common Causes

How to Resolve

1. Verify the service falls outside dental coverage Confirm the service is indeed one that should be billed to medical insurance — oral surgery, TMJ, biopsies, trauma-related dental work, or medically necessary procedures typically qualify.
2. Collect medical insurance details Obtain the patient's medical insurance information if not already on file. Verify eligibility and check coverage for the specific service type.
3. Convert to medical coding Translate CDT codes to CPT codes and add appropriate ICD-10 diagnosis codes. Ensure the medical coding accurately represents the service and supports medical necessity.
4. Submit with supporting documentation Bill the medical plan with the recoded claim, clinical documentation supporting medical necessity, and any required prior authorization or referral documentation.
5. Follow up on medical plan processing Monitor the medical plan claim for adjudication. If the medical plan also denies, determine whether to appeal or post as a contractual adjustment based on the denial reason.

Common RARC Pairings

The RARC code tells you exactly what triggered the CO-254:

How to Prevent CO-254

• Verify whether a service falls under dental or medical coverage before submitting the claim — check both plans for coverage of procedures that commonly cross the dental-medical boundary
• Maintain current medical insurance information on file for all dental patients who may require services that cross into medical coverage territory
• Train billing staff on services that are typically covered under medical rather than dental plans — oral surgery, TMJ, biopsies, accident-related dental, and pre-radiation extractions
• Proactively coordinate with the patient's medical plan for services that may require medical pre-authorization
• Build a reference list of procedure codes that commonly trigger CARC 254 to proactively route claims to the correct plan from the start

General Prevention

• Verify whether services are covered under the dental or medical plan before claim submission
• Communicate clearly with patients about plan limitations regarding dental versus medical coverage
• Obtain pre-authorization from the medical plan when applicable for services that straddle dental and medical coverage
• Coordinate between dental and medical billing departments to ensure claims are routed to the correct plan
• Stay current with plan changes and coverage updates that may affect dental-medical service boundaries

Also Filed As

The same CARC 254 may appear with different Group Codes:

Related Denial Codes