All denial codes

CARC · CO group

CO-242

Services not provided by a network or primary care provider

Contractual obligation; provider write-off unless appealed

What it means
The payer processed the claim as out-of-network.
Likely cause
Clinician not yet loaded to the group contract, or a roster/effective-date gap after a new hire.
How to fix it
Confirm the effective date on the payer roster and appeal for retro in-network processing back to the credentialing effective date.
Revenue impact
Often recoverable for months of claims at once. This is a classic audit finding.
  • credentialing
  • network status
  • roster

Related codes

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