CO-49: Non-Covered Routine/Preventive Exam

What Does CO-49 Mean?

With CO (Contractual Obligation), the CARC 49 denial for non-covered routine/preventive exam is the provider's contractual responsibility. The patient is not liable for this amount. However, the provider may appeal with supporting clinical or administrative documentation if the denial is believed to be in error.

CARC 49 indicates non-covered routine/preventive exam. The payer determined that the service or a portion of it does not meet coverage criteria under the patient's current plan benefits or the applicable coverage rules.

Common scenarios that trigger this adjustment include: the patient's insurance plan does not cover the routine or preventive exam that was billed; A diagnostic or screening procedure performed during a routine exam was denied because it was considered part of the preventive visit; The preventive exam exceeds the plan's allowed frequency (e.g., only one annual wellness visit per year). The group code paired with CARC 49 determines who bears the financial responsibility — CO places it on the provider as a contractual obligation, PR shifts it to the patient, OA indicates a coordination of benefits or other payer adjustment.

Common Causes

How to Resolve

1. Review the denial Examine the CO-49 denial and any RARC codes to understand the specific basis for the coverage determination.
2. Gather supporting documentation Collect medical records, clinical notes, authorization documents, or other evidence that supports the medical necessity or coverage of the denied service.
3. File the appeal If the plan is ACA-compliant and should cover the preventive service without cost-sharing, appeal citing ACA Section 2713 and the applicable USPSTF recommendation. Also review if diagnostic services should be billed separately from the preventive visit using modifier 25.
4. Track the appeal outcome Monitor the appeal status and follow up as needed. If denied again, consider further levels of appeal if available.

Common RARC Pairings

The RARC code tells you exactly what triggered the CO-49:

How to Prevent CO-49

• Verify preventive care benefits before services
• Use correct preventive diagnosis codes (Z codes)
• Separate preventive and diagnostic services with appropriate modifiers
• Check plan-specific preventive care frequency limits
• Train billing staff on preventive vs diagnostic coding distinctions

Also Filed As

The same CARC 49 may appear with different Group Codes:

Related Denial Codes