How to Prevent CO-16 Denials Caused by Missing or Incomplete Claim Information Introduction A CO-16 denial does not necessarily reflect a problem with the care provided. It usually means the payer needs more information to process the claim. That might be a patient identifier, a provider detail, a procedure modifier or a supporting document. Whatever is missing, payment is delayed while staff investigate, correct and resubmit the claim. CO-16 is both a claims issue and a process issue. The code points to missing or incomplete information but does not identify the specific error. Remittance details, including any applicable remark code, help pinpoint the problem behind a CO-16 denial. Preventing repeat…