CO-179Contractual ObligationEligibility
CO-179 Denial Code: Waiting period not satisfied
The service fell inside the plan's waiting period for this benefit.
Why CO-179 happens
- ●New enrollee using benefits before the waiting period ended (common in dental/vision)
How to fix a CO-179 denial
- 1
Verify the waiting-period end date; bill the patient for services inside it per plan terms
How to prevent it
Verify benefit-specific waiting periods for recently enrolled patients.
Drowning in CO-179 denials?
OakClaim works every denial within 48 hours and builds prevention rules so they stop recurring.