Denial codes / CO-226
Denial code 226CO-226: Requested information not sent
Information requested from the provider was not provided, late or incomplete.
What to doFix and resend
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 insurer asked for records or x-rays and they were not sent, sent late or incomplete.
What to do
- Find the request letter or remark code.
- Send everything requested with the claim number.
- Ask for reprocessing.
Stop it next time
Track insurer information requests with a due date, like any other claim task.
How many CO-226 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.