Denial Knowledge Center
Understand, resolve, and prevent every denial
Each denial page includes root cause, sample scenario, department responsibilities, compliance considerations, corrective actions, appeal guidance, and a workflow diagram.
Medical Necessity
CO-50
Not deemed medically necessary
View denial guideRegistration
CARC 16
Missing/incorrect information
View denial guideCoding
CO-97
Bundled / included in another service
View denial guideBilling
CO-45
Charge exceeds fee schedule
View denial guideRegistration
CO-22
Coordination of benefits
View denial guideBilling
CO-18
Duplicate claim/service
View denial guideAuthorization
CO-197
Authorization absent
View denial guideCoding
CO-11
Diagnosis inconsistent with procedure
View denial guidePatient Access
CO-27
Coverage terminated
View denial guide