What does CO 242 mean?

The provider was out of network, or not the patient's assigned primary care provider. Contractual obligation. The provider absorbs it and cannot bill the patient.

Why does CO 242 happen?

No referral from the assigned primary care provider. The provider is out of network for that specific plan product, though in network for others from the same payer. Emergency or urgent care, where network rules are usually waived.

What documentation wins a CO 242 appeal?

The referral or authorisation, with its date range. Documentation that the care was emergent, where that applies. The network participation record for that specific plan product.

CO 242 denial code description — what it means and how to appeal it

Q: Can you appeal CO 242?

Usually recoverable. Check whether the patient had a referral or an authorisation on file, or whether the care was urgent. Network denials are often won on one of those three.

What CO 242 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?

Usually recoverable. Appeal it. The money is usually there.

Why it fires

In the order we see it.

No referral from the assigned primary care provider.
The provider is out of network for that specific plan product, though in network for others from the same payer.
Emergency or urgent care, where network rules are usually waived.

What to do

Check whether the patient had a referral or an authorisation on file, or whether the care was urgent. Network denials are often won on one of those three.

What actually wins it

The documentation, not the argument.

The referral or authorisation, with its date range.
Documentation that the care was emergent, where that applies.
The network participation record for that specific plan product.

The common mistake. Do not bill the patient before checking. Balance billing an out-of-network denial that was actually emergent is a compliance problem, not just a mistake.

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 242 description

The provider was out of network, or not the patient's assigned primary care provider. 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.

CO 242 denial code