Denial Codes
100

Which denial code capitates to the HMO?

24

200

Which denial code indicates it's a deductible?

PR-1

300

Denial code PR-27 means what?

no coverage at time of service

400

Denial code CO-50 means what?

not medically necessary

500

What is the difference between CO-109 and CO-22 when pertaining to Medicare?

CO-109 means covered by another payer (either a SNF or RR Medicare)

CO-22 means another insurance carrier is primary to Medicare (MSP)