CO-253: Sequestration — Medicare Federal Payment Reduction

What Does CO-253 Mean?

CO-253 is a mandatory contractual adjustment under the Budget Control Act. The 2% reduction applies automatically to all Medicare Fee-for-Service payments after deductibles and coinsurance are calculated. The provider must write off this amount — it cannot be billed to the patient, appealed, or waived. This is not a denial based on the claim's merits; it is a universal payment reduction that every Medicare provider absorbs.

CARC 253 is not a denial in any meaningful sense. It is a mandatory 2% payment reduction applied to all Medicare Fee-for-Service claims under the Budget Control Act of 2011 (sequestration). This reduction has been in effect since April 1, 2013, and is currently legislated through 2031. Every Medicare FFS claim — regardless of service type, provider specialty, or claim accuracy — receives this automatic 2% cut.

The reduction is calculated after Medicare determines the approved amount and accounts for patient deductibles and coinsurance. For example, if Medicare approves $1,000 for a claim, the provider receives $980 after the $20 sequestration reduction. The 2% is applied to the Medicare payment amount, not the billed amount.

CARC 253 always appears with Group Code CO, making it a contractual write-off. Critically, the provider cannot bill the patient for the sequestered 2%. The amount must be absorbed as a cost of participating in Medicare. There is no appeal process — sequestration is federal law, and no individual provider action can change or waive the reduction. The only productive response is to post the adjustment correctly and focus revenue cycle efforts on preventing other denials that are actionable.

Common Causes

How to Resolve

Post the 2% sequestration reduction as a contractual write-off. There is no further action — this adjustment is mandated by federal law and cannot be appealed or billed to the patient.

1. Verify the calculation is 2% Confirm the sequestration amount is exactly 2% of the Medicare payment. This is calculated on the payment amount after deductibles and coinsurance, not on the billed charges.
2. Post the contractual write-off Record the CO-253 amount as a contractual adjustment. Map it to a specific sequestration adjustment code in your billing system for accurate financial reporting.
3. Ensure correct patient billing Verify the patient statement does not include any portion of the sequestration reduction. The patient owes only their deductible and coinsurance — not the 2% sequestered amount.
4. Incorporate into financial planning Factor the 2% reduction into Medicare revenue projections and financial models. This is a permanent feature of Medicare reimbursement for the foreseeable future.

How to Prevent CO-253

• Sequestration cannot be prevented — it is a mandatory federal reduction on all Medicare FFS claims
• Build the 2% reduction into revenue forecasts and financial models so the practice plans for reduced Medicare payments
• Focus revenue cycle improvement on eliminating preventable denials and achieving clean claim rates above 98% to maximize the base payment before sequestration is applied
• Ensure accurate coding and thorough documentation on all claims to maximize the approved amount — the 2% comes off a higher base when claims are coded correctly
• Consider the sequestration impact when negotiating commercial payer contracts to maintain overall revenue sustainability

General Prevention

• Sequestration cannot be prevented — it is a mandatory federal payment reduction that applies to all Medicare FFS claims
• Build the 2% reduction into revenue forecasts and financial models so the practice is not surprised by reduced Medicare payments
• Focus revenue cycle improvement on eliminating preventable denials, achieving clean claim rates above 98%, and reducing days in accounts receivable to offset the sequestration impact
• Ensure accurate coding and complete documentation on all claims to maximize the base payment amount before the 2% reduction is applied
• Consider the sequestration impact when negotiating commercial payer contracts to ensure overall reimbursement rates remain sustainable

Related Denial Codes