All denial codes

CARC · CO group

CO-252

An attachment or other documentation is required to adjudicate this claim

Contractual obligation; provider write-off unless appealed

What it means
The payer is waiting on records before it will pay.
Likely cause
Records requests routed to a fax number or portal nobody monitors.
How to fix it
Assign a single owner for documentation requests with a 5-business-day SLA, and log every submission with a confirmation.
Revenue impact
Fully recoverable, but the most commonly ignored pending category.
  • documentation
  • records request
  • SLA

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