Denial codes / CO-242
Denial code 242CO-242: Out-of-network provider
Services not provided by network/primary care providers.
What to doRead the EOB, then decide
Often recoverableYes, when worked
The letters in front matter. CO means the office can't bill the patient for the amount; PR means the patient may owe it. The same number can appear with either, so read both parts.
Why dental offices see it
- The treating dentist was not credentialed with this network on the date of service.
- The claim listed the wrong treating provider.
What to do
- Check the provider's credentialing status and effective date.
- Correct the treating provider if it was wrong.
- If credentialing was pending, ask about a retroactive effective date.
Stop it next time
Do not schedule a new dentist's patients under a plan until credentialing is confirmed.
How many CO-242 claims are in your report? The free check counts them, ranks them by dollars and deadline and drafts the letter. It runs in your browser; nothing is uploaded.
Plain-English paraphrase; the official code list is maintained by X12. Insurer rules vary; check the insurer's provider manual. Not legal advice.