All denial codes

CARC · CO group

CO-50

Non-covered service, not deemed a medical necessity

Contractual obligation; provider write-off unless appealed

What it means
The payer's medical-necessity criteria were not met by the information on the claim.
Likely cause
Session frequency beyond plan limits, diagnosis that does not support the level of service, or missing authorization details.
How to fix it
Appeal with the treatment plan and progress notes. If the plan explicitly excludes the service, move it to self-pay under a signed agreement.
Revenue impact
Partially recoverable with a documented appeal packet.
  • medical necessity
  • appeal
  • authorization

Related codes

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