PR: Patient responsibility. This one goes on the patient statement.
So the balance is billable to the patient, provided your advance notice was in order. Check that before the statement goes out. Billing a patient for something you contractually agreed to absorb is the expensive mistake on this code.
The same code, a different prefix. 27 also arrives as CO 27. The reason for the denial is the same. The prefix decides who pays for it, so the next step is not the same. If your remit says CO 27, read that page instead.
Usually lost. Recoverable only with unusual evidence. Triage by dollar value.
In the order we see it.
Coverage had terminated before the date of service.
Re-verify eligibility. If another plan was active, rebill that payer.
The documentation, not the argument.
The common mistake. Re-verify eligibility before writing this off. A termination date in the payer's system is sometimes wrong, and the patient often has other coverage.
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.
Coverage had ended on the date of service. So the balance is billable to the patient, provided your advance notice was in order. Check that before the statement goes out. Billing a patient for something you contractually agreed to absorb is the expensive mistake on this code.
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.
The adjustment code says the claim was reduced. The remark code printed next to it says why, and it is the one that tells you what to send back.
| Remark | What it means |
|---|---|
| N30 | The patient was not eligible for this particular service on that date. That is narrower than not being covered at all, and the difference matters. |
Upload your denial summary for the last 90 days. 4 columns: payer, CARC code, count, billed amount. You get back which were winnable and what they were worth.
Upload your denial export No patient data. No BAA. No charge.