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CO-16
Recoverability: High
Claim/service lacks information or has submission/billing error(s)
The claim is missing information the payer needs to adjudicate it, or contains a submission error. The accompanying remittance advice remark codes specify exactly what is missing.
Why this happens on dental claims
- Missing tooth numbers, quadrants, arch, or surface data on procedures that require them
- Crowns, buildups, scaling and root planing, and implants submitted without required attachments such as radiographs, periodontal charting, or narratives
- Subscriber ID, group number, or provider fields left incomplete after a plan change the office did not catch
How to appeal CO-16
- Read the remark codes on the ERA to identify the exact missing element, and call the payer if no remark code was provided
- Gather the missing data or attachment from the chart
- Submit a corrected claim with the missing information rather than a formal appeal, referencing the original claim number
- Confirm receipt within two weeks, because corrected claims are the ones most often lost
- Calendar the payer's correction deadline, which is often shorter than the appeal deadline
How to prevent it
- Turn on clearinghouse and PMS validation edits for tooth, surface, and attachment requirements by code
- Keep a per-payer attachment grid at charge entry so required radiographs and narratives go out with the first claim
Related codes
How much CO-16 money is sitting in your remittances?
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