Medical Billing Blog: Tips and Industry Updates
Our medical billing blog shares practical tips, coding changes and industry updates to help your practice get paid faster.
Written by our billing and credentialing team. Browse articles on denial management, A/R management, medical coding and credentialing.
What the CO 4 Denial Code Means and How to Fix It
The CO 4 denial code means the payer found that the procedure code on a claim line does not fit the modifier reported with it. The modifier may…
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What the CO 27 Denial Code Means and How to Respond
The CO 27 denial code means the payer says the patient’s coverage had ended before the date of…
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What the CO-50 Denial Code Means and How to Overturn It
The CO 50 denial code means the payer decided a service was not medically necessary under its coverage…
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CO-197 Denials: Why Authorization Is Missing and What to Do
The CO 197 denial code means the payer found no valid precertification, authorization or notification for a service…
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