CO-253: Payment cut due to sequestration policy

The payer is telling you the claim was otherwise payable, but federal sequestration rules required a cut to the allowed amount. You are not being accused of an error or overbilling, the payer is applying a mandated reduction on their side. Mechanically, the claim passes benefit, coding, and pricing edits, then a post-pricing adjustment applies a percentage reduction to the covered amount. The reduced portion shows under CO-253 as a contractual adjustment, which you must write off and cannot collect from the patient or another payer.

In behavioral health, you will see CO-253 on Medicare and Medicare-based products that cover PHP, IOP, residential, and detox per diem claims on the UB-04. The PHP or IOP day rate prices correctly, then the payer applies a sequestration cut, so your check and ERA come in lower than your internal expected Medicare rate. For OTP and MAT services billed on CMS-1500 or UB-04, the same thing happens: your weekly bundled OTP code or medication management visits price, then CO-253 applies as a federal reduction. Your team often misreads this as underpayment and wastes time appealing a payment that is actually correct under policy. Carve-out behavioral vendors administering Medicare Advantage benefits may also show CO-253 on telehealth psychotherapy and IOP tele-PHP claims that used modifier 95 or 93. The payer pays the correct contracted or Medicare-equivalent telehealth rate, then applies sequestration as a separate adjustment line, which should be treated as non-recoverable.

• Confirm the payer and product are subject to sequestration, especially Medicare and Medicare Advantage or Medicare-based rates.
• Compare the allowed amount before CO-253 to the current fee schedule or Medicare rate to be sure pricing is otherwise correct.
• Verify in the ERA that the CO-253 amount is labeled as sequestration or federal reduction, not a different discount.
• If the pre-sequestration allowed is wrong, correct any coding, units, rev codes, or rates, then submit a corrected claim to fix the base price.
• If pricing is correct and only CO-253 is present, do not appeal, write off the CO-253 amount as a contractual adjustment in your system.
• Update any payer-specific variance reports so CO-253 amounts do not show as underpayments that staff chase unnecessarily.

• Build expected-payment logic that includes sequestration reductions for Medicare and Medicare-based behavioral contracts so staff see the right expected amount.
• Flag CO-253 in your denial and variance work queues as a non-appealable contractual reduction unless a separate pricing error is present.
• Train billers, posters, and leaders that sequestration adjustments are not billable to patients or secondary payers and must be written off.
• Review payer contracts and policy notices at least yearly to see if sequestration or similar reductions change for your key behavioral payers.