CO-273: Coverage/Program Guidelines Exceeded

What Does CO-273 Mean?

CO-273 designates the excess coverage as a contractual write-off. The provider's contract with the payer limits reimbursement to the plan's coverage caps, and amounts exceeding those caps cannot be billed to the patient. This is the most common pairing and typically occurs when the provider continued treating beyond the plan's authorized limits. If the additional services were medically necessary, the provider can appeal or request a benefit limit exception.

When CARC 273 appears on a remittance, the payer is indicating that the billed service went beyond the limits established in the patient's coverage or program guidelines. Unlike CARC 272 (guidelines not met), CARC 273 specifically signals that a maximum was reached or surpassed. The service itself may be covered in principle, but the patient has exhausted their available benefits for that service type — whether measured in visit counts, units, dollar amounts, or time periods.

This denial is common in rehabilitation services (physical therapy, occupational therapy, speech therapy), behavioral health, chiropractic care, and any specialty where payers impose visit limits or benefit caps. For example, a plan may cover 20 physical therapy visits per calendar year — visit 21 triggers CARC 273. Similarly, a plan may limit the number of units of a specific drug or supply, and billing beyond that cap results in this adjustment.

The group code is critical for determining your next step. Under CO, the excess amount is a contractual write-off that the provider absorbs. Under PR, the patient is responsible for the overage. In both cases, there may be an opportunity to appeal if the additional services were medically necessary. Many payers have exception processes where a provider can request additional visits or units beyond the standard cap by submitting clinical documentation demonstrating ongoing medical need. The key is to request these exceptions proactively — ideally before the patient reaches the benefit limit — rather than retroactively after a denial.

Common Causes

How to Resolve

Verify the benefit limit that was exceeded, confirm coding accuracy, and appeal with medical necessity documentation if the additional services were clinically required.

1. Confirm the benefit limit and verify your records Cross-reference the payer's benefit accumulator with your records to ensure the limit was accurately applied.
2. Request a benefit exception If the patient needs continued treatment beyond the cap, submit a benefit exception request with clinical documentation showing ongoing medical necessity and treatment progress.
3. Post the write-off if the exception is denied If no exception is granted, write off the CO-273 adjustment. Document the outcome and inform the patient about their remaining benefit status.

How to Prevent CO-273

• Track patients' utilization against their plan limits throughout the benefit period and alert providers as patients approach their cap
• Request benefit limit exceptions proactively before the patient exhausts their covered visits or units
• Implement billing system alerts that flag when a patient has reached or is approaching their coverage maximum
• Communicate with patients about their remaining covered services so they can make informed decisions about continued treatment

General Prevention

• Verify the patient's remaining benefit limits and coverage caps before rendering services
• Obtain prior authorization when approaching plan limits to confirm coverage for additional services
• Track patients' utilization against their plan limits throughout the benefit period
• Maintain clear communication with patients about their remaining covered benefits before scheduling additional services
• Review payer coverage guidelines regularly to stay current with frequency limits, unit caps, and benefit maximums
• Implement billing system alerts that flag when a patient is approaching or has exceeded their coverage limits

Also Filed As

The same CARC 273 may appear with different Group Codes:

Related Denial Codes