Denial code

CO 253 denial code

A flat federal sequestration reduction was applied.

Not a denial CO

What CO 253 means

CO: Contractual obligation. The provider absorbs it and cannot bill the patient.

So the balance cannot move to the patient. Either the appeal recovers it or the practice absorbs it. That makes the appeal decision the whole decision on this line.

Is it worth appealing?

Not a denial. A contracted write-down or patient responsibility. Not money you lost.

Why it fires

In the order we see it.

  1. Federal sequestration, applied after the allowed amount is worked out.

What to do

Nothing to appeal. It is a statutory reduction applied to Medicare payments, not a decision about your claim.

The common mistake. Do not bill this to the patient. It is a payer-side reduction and is not patient responsibility.

Where this comes from. This is our own reading of the code, not the payer's and not a copy of the standards text. We classify it from how these denials actually resolve. Where we are unsure, we say so rather than guessing.

CO 253 description

A flat federal sequestration reduction was applied. So the balance cannot move to the patient. Either the appeal recovers it or the practice absorbs it. That makes the appeal decision the whole decision on this line.

This is our plain-English wording, not the official X12 text. X12 asserts copyright over the published descriptions, so we write our own and say what it means for the money rather than restating the code.

Related codes

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