OA-253: Sequestration Reduction in Federal Payment

What Does OA-253 Mean?

OA-253 may appear in secondary payer scenarios or other adjustment contexts where the sequestration reduction is being communicated as an informational adjustment. The OA designation indicates the financial responsibility is being determined through other means.

CARC 253 represents the federal sequestration reduction that has been applied to Medicare payments since 2013 under the Budget Control Act of 2011. Every Medicare FFS claim is subject to this uniform 2% reduction, which is calculated after the approved amount is determined and after deductible and coinsurance amounts are applied.

This adjustment is not a denial, an error, or a coverage dispute. It is a legislatively mandated reduction in federal spending that affects all Medicare Part A, Part B, and Part D claims equally. The reduction applies to the Medicare payment amount only — it does not change the patient's cost-sharing obligations.

Providers should treat CO-253 as a standard contractual adjustment in their revenue cycle. The amount should be posted as a contractual allowance and cannot be balance-billed to the patient. While sequestration rates have been temporarily modified during certain legislative periods, the 2% reduction has been the standard rate for most of its existence.

How to Resolve

1. Review the claim context Determine whether this is a secondary claim or other adjustment scenario where OA is appropriate for the sequestration notification.
2. Verify the adjustment amount Confirm the amount aligns with the expected 2% sequestration reduction on the Medicare portion of the payment.
3. Process per COB procedures Post the OA-253 adjustment according to your standard coordination of benefits processing procedures for the specific payer scenario.
4. Contact payer if unclear If the reason for the OA group code assignment is not clear from the claim context, contact the payer for clarification on the adjustment.

How to Prevent OA-253

• Understand how each payer applies sequestration adjustments in secondary claim scenarios
• Configure billing systems to handle sequestration adjustments across different group codes appropriately

Also Filed As

The same CARC 253 may appear with different Group Codes:

Related Denial Codes